Wildstash/periodontal-reasoning-40k · Datasets at Hugging Face

prompt stringlengths 86 209	completion stringlengths 30 417	label int64 -1 1
A molar tooth shows horizontal bone loss of approximately 34% of the furcation width. Classify the degree of furcation involvement.	The furcation involvement should be classified as Grade 3.	-1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 2 mm and radiographic bone loss around 80% of the root, with 4 teeth lost.	These findings correspond to Stage III periodontitis. According to the 2017 classification, Stage III is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 2 mm with radiographic bone loss of 80% falls within the range for Stage III, and 4 teeth lost fits the criteria.	1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 0.62 mm and vertical mobility.	The tooth should be classified as mobility grade 0.	-1
A tooth has 3 mm of gingival recession. Describe whether this would be considered moderate recession and its clinical relevance.	A recession depth of 3 mm is considered moderate. Gingival recession exposes the root surface, which can lead to dentin hypersensitivity and complicate plaque control. Recording recession helps assess treatment needs and contributes to the calculation of clinical attachment loss.	1
Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 0.23 and bone loss of 3.5 mm over five years; the patient smokes and the patient has poorly controlled diabetes.	This corresponds to Grade C. The grade reflects the rate of progression: Grade A indicates slow progression (ratio <0.25 or <2 mm bone loss), Grade B moderate (ratio 0.25–1.0), and Grade C rapid (ratio >1.0 or ≥2 mm loss). Risk factors like smoking or uncontrolled diabetes shift the grade up.	1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 5 mm and radiographic bone loss around 18% of the root, with 0 teeth lost.	The patient should be classified as Stage I periodontitis.	-1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.72 mm and vertical mobility.	This corresponds to a mobility grade 3.	1
A molar tooth shows horizontal bone loss of approximately 16% of the furcation width. Classify the degree of furcation involvement.	The furcation involvement should be classified as Grade 2.	-1
Explain the clinical significance of no bleeding on probing in a non‑smoker during periodontal probing.	No bleeding on probing suggests the periodontal disease is not active or progressing.	1
A molar tooth shows horizontal bone loss of approximately 78% of the furcation width. Classify the degree of furcation involvement.	This represents a Grade 3 furcation involvement.	1
Explain the clinical significance of bleeding on probing in a smoker during periodontal probing.	Bleeding on probing suggests that the tissues are healthy.	-1
Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 1.04 and bone loss of 1.2 mm over five years; the patient smokes.	This corresponds to Grade C. The grade reflects the rate of progression: Grade A indicates slow progression (ratio <0.25 or <2 mm bone loss), Grade B moderate (ratio 0.25–1.0), and Grade C rapid (ratio >1.0 or ≥2 mm loss). Risk factors like smoking or uncontrolled diabetes shift the grade up.	1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.51 mm.	This corresponds to a mobility grade 3.	1
A patient's bleeding score was 77% at baseline and 52% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).	The bleeding improvement is not favourable.	1
A patient's plaque score was 36% at baseline and 32% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is favourable.	-1
A molar tooth shows horizontal bone loss of approximately 89% of the furcation width. Classify the degree of furcation involvement.	The furcation involvement should be classified as Grade 2.	-1
A molar tooth shows horizontal bone loss of approximately 59% of the furcation width. Classify the degree of furcation involvement.	The furcation involvement should be classified as Grade 1.	-1
Differentiate between gingival recession and clinical attachment loss (CAL) in periodontal assessment.	Gingival recession is the exposure of the root surface due to apical migration of the gingival margin, measured from the cementoenamel junction to the gingival margin. Clinical attachment loss combines recession with pocket depth, measured from the cementoenamel junction to the base of the pocket, and is considered the best indicator of periodontal destruction.	1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 2 mm and radiographic bone loss around 96% of the root, with 5 teeth lost.	These findings correspond to Stage IV periodontitis. According to the 2017 classification, Stage IV is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 2 mm with radiographic bone loss of 96% falls within the range for Stage IV, and 5 teeth lost fits the criteria.	1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.06 mm.	This corresponds to a mobility grade 2.	1
A tooth has a gingival margin 2 mm coronal to the CEJ and a probing depth of 9 mm. Calculate the gingival recession and clinical attachment loss (CAL) and describe their significance.	The recession is 2 mm and the CAL is 11 mm because you add the probing depth to the recession regardless of the margin position.	-1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 7 mm and radiographic bone loss around 90% of the root, with 5 teeth lost.	These findings correspond to Stage IV periodontitis. According to the 2017 classification, Stage IV is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 7 mm with radiographic bone loss of 90% falls within the range for Stage IV, and 5 teeth lost fits the criteria.	1
Describe the correct technique for measuring and recording probing depths during periodontal charting.	A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.	1
Describe the correct technique for measuring and recording probing depths during periodontal charting.	Press the probe firmly into the gingiva and record only the deepest reading around each tooth; measuring all six sites or walking the probe is unnecessary.	-1
Describe the correct technique for measuring and recording probing depths during periodontal charting.	Press the probe firmly into the gingiva and record only the deepest reading around each tooth; measuring all six sites or walking the probe is unnecessary.	-1
A patient's bleeding score was 40% at baseline and 0% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).	The bleeding improvement is favourable.	1
Identify the periodontal parameters that should be recorded during a full periodontal examination for a patient with a BPE score of 3 or 4.	Only record plaque levels and pocket depths at a single site per tooth; recording bleeding on probing, mobility, recession and furcation involvement is not necessary.	-1
The cementoenamel junction (CEJ) is not detectable due to calculus deposits. How should gingival recession and clinical attachment loss be recorded or estimated?	If the CEJ is not detectable, gingival recession and clinical attachment loss cannot be recorded and should be omitted from the chart.	-1
Describe the correct technique for measuring and recording probing depths during periodontal charting.	A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.	1
A patient's plaque score was 65% at baseline and 22% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is favourable.	1
A tooth has a gingival margin 2 mm coronal to the CEJ and a probing depth of 4 mm. Calculate the gingival recession and clinical attachment loss (CAL) and describe their significance.	The gingival margin is 2 mm above the CEJ, so recession is recorded as −2 mm. CAL is probing depth minus recession: 4 − (−2) = 2 mm. Negative recession indicates the margin is coronal to the CEJ, while CAL reflects the true attachment loss.	1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.52 mm.	The tooth should be classified as mobility grade 0.	-1
A tooth has 2 mm of gingival recession. Describe whether this would be considered mild recession and its clinical relevance.	A recession depth of 2 mm is considered mild. Gingival recession exposes the root surface, which can lead to dentin hypersensitivity and complicate plaque control. Recording recession helps assess treatment needs and contributes to the calculation of clinical attachment loss.	1
Describe the correct technique for measuring and recording probing depths during periodontal charting.	A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.	1
A patient's bleeding score was 61% at baseline and 40% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).	The bleeding improvement is not favourable.	1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.26 mm.	The tooth should be classified as mobility grade 1.	-1
A molar tooth shows horizontal bone loss of approximately 97% of the furcation width. Classify the degree of furcation involvement.	This represents a Grade 3 furcation involvement.	1
A patient's plaque score was 77% at baseline and 76% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is not favourable.	1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.42 mm.	This corresponds to a mobility grade 2.	1
A patient's bleeding score was 42% at baseline and 40% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).	The bleeding improvement is favourable.	-1
Identify the periodontal parameters that should be recorded during a full periodontal examination for a patient with a BPE score of 3 or 4.	For patients with a BPE score of 3 or 4, probing pocket depths and bleeding on probing should be recorded at six sites around each tooth. A full baseline chart should also include tooth mobility, gingival recession, furcation involvement and suppuration to fully assess disease severity.	1
Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 0.62 and bone loss of 2.2 mm over five years; the patient smokes and the patient has poorly controlled diabetes.	The appropriate grade is Grade A.	-1
A molar tooth shows horizontal bone loss of approximately 25% of the furcation width. Classify the degree of furcation involvement.	This represents a Grade 1 furcation involvement.	1
A patient's plaque score was 55% at baseline and 11% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is favourable.	1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 5 mm and radiographic bone loss around 56% of the root, with 4 teeth lost.	The patient should be classified as Stage II periodontitis.	-1
Explain the clinical significance of bleeding on probing in a non‑smoker during periodontal probing.	Bleeding on probing suggests that the tissues are healthy.	-1
A patient's bleeding score was 25% at baseline and 16% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).	The bleeding improvement is favourable.	1
Describe the correct technique for measuring and recording probing depths during periodontal charting.	A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.	1
Identify the periodontal parameters that should be recorded during a full periodontal examination for a patient with a BPE score of 3 or 4.	For patients with a BPE score of 3 or 4, probing pocket depths and bleeding on probing should be recorded at six sites around each tooth. A full baseline chart should also include tooth mobility, gingival recession, furcation involvement and suppuration to fully assess disease severity.	1
Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 1.9 and bone loss of 3.0 mm over five years; no additional risk factors.	The appropriate grade is Grade A.	-1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.77 mm.	The tooth should be classified as mobility grade 0.	-1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.55 mm and vertical mobility.	The tooth should be classified as mobility grade 0.	-1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 7 mm and radiographic bone loss around 20% of the root, with 0 teeth lost.	These findings correspond to Stage III periodontitis. According to the 2017 classification, Stage III is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 7 mm with radiographic bone loss of 20% falls within the range for Stage III, and 0 teeth lost fits the criteria.	1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.27 mm.	The tooth should be classified as mobility grade 1.	-1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 4 mm and radiographic bone loss around 68% of the root, with 1 teeth lost.	The patient should be classified as Stage II periodontitis.	-1
Differentiate between gingival recession and clinical attachment loss (CAL) in periodontal assessment.	Gingival recession is the exposure of the root surface due to apical migration of the gingival margin, measured from the cementoenamel junction to the gingival margin. Clinical attachment loss combines recession with pocket depth, measured from the cementoenamel junction to the base of the pocket, and is considered the best indicator of periodontal destruction.	1
A molar tooth shows horizontal bone loss of approximately 33% of the furcation width. Classify the degree of furcation involvement.	This represents a Grade 2 furcation involvement.	1
A molar tooth shows horizontal bone loss of approximately 54% of the furcation width. Classify the degree of furcation involvement.	The furcation involvement should be classified as Grade 3.	-1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.23 mm.	The tooth should be classified as mobility grade 1.	-1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 2 mm and radiographic bone loss around 42% of the root, with 1 teeth lost.	The patient should be classified as Stage IV periodontitis.	-1
Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 1.11 and bone loss of 3.6 mm over five years; no additional risk factors.	The appropriate grade is Grade B.	-1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 5 mm and radiographic bone loss around 47% of the root, with 5 teeth lost.	The patient should be classified as Stage I periodontitis.	-1
A tooth has a gingival margin 3 mm coronal to the CEJ and a probing depth of 7 mm. Calculate the gingival recession and clinical attachment loss (CAL) and describe their significance.	The recession is 3 mm and the CAL is 10 mm because you add the probing depth to the recession regardless of the margin position.	-1
Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 0.47 and bone loss of 0.8 mm over five years; the patient smokes.	This corresponds to Grade C. The grade reflects the rate of progression: Grade A indicates slow progression (ratio <0.25 or <2 mm bone loss), Grade B moderate (ratio 0.25–1.0), and Grade C rapid (ratio >1.0 or ≥2 mm loss). Risk factors like smoking or uncontrolled diabetes shift the grade up.	1
A patient's plaque score was 48% at baseline and 19% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is not favourable.	-1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.58 mm and vertical mobility.	The tooth should be classified as mobility grade 0.	-1
A tooth has 2 mm of gingival recession. Describe whether this would be considered mild recession and its clinical relevance.	A recession depth of 2 mm would be classified as moderate and has no clinical relevance.	-1
A patient's bleeding score was 41% at baseline and 32% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).	The bleeding improvement is not favourable.	1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 5 mm and radiographic bone loss around 64% of the root, with 3 teeth lost.	These findings correspond to Stage IV periodontitis. According to the 2017 classification, Stage IV is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 5 mm with radiographic bone loss of 64% falls within the range for Stage IV, and 3 teeth lost fits the criteria.	1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.2 mm and vertical mobility.	This corresponds to a mobility grade 3.	1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.25 mm.	The tooth should be classified as mobility grade 1.	-1
A patient's bleeding score was 51% at baseline and 51% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).	The bleeding improvement is not favourable.	1
Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 1.43 and bone loss of 2.4 mm over five years; the patient smokes and the patient has poorly controlled diabetes.	The appropriate grade is Grade A.	-1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 7 mm and radiographic bone loss around 1% of the root, with 2 teeth lost.	These findings correspond to Stage III periodontitis. According to the 2017 classification, Stage III is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 7 mm with radiographic bone loss of 1% falls within the range for Stage III, and 2 teeth lost fits the criteria.	1
A tooth has a gingival margin 1 mm coronal to the CEJ and a probing depth of 4 mm. Calculate the gingival recession and clinical attachment loss (CAL) and describe their significance.	The gingival margin is 1 mm above the CEJ, so recession is recorded as −1 mm. CAL is probing depth minus recession: 4 − (−1) = 3 mm. Negative recession indicates the margin is coronal to the CEJ, while CAL reflects the true attachment loss.	1
A molar tooth shows horizontal bone loss of approximately 49% of the furcation width. Classify the degree of furcation involvement.	This represents a Grade 2 furcation involvement.	1
Describe the correct technique for measuring and recording probing depths during periodontal charting.	A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.	1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 1 mm and radiographic bone loss around 11% of the root, with 4 teeth lost.	These findings correspond to Stage I periodontitis. According to the 2017 classification, Stage I is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 1 mm with radiographic bone loss of 11% falls within the range for Stage I, and 4 teeth lost fits the criteria.	1
A patient's plaque score was 73% at baseline and 71% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is favourable.	-1
A tooth has a gingival margin 3 mm coronal to the CEJ and a probing depth of 9 mm. Calculate the gingival recession and clinical attachment loss (CAL) and describe their significance.	The gingival margin is 3 mm above the CEJ, so recession is recorded as −3 mm. CAL is probing depth minus recession: 9 − (−3) = 6 mm. Negative recession indicates the margin is coronal to the CEJ, while CAL reflects the true attachment loss.	1
Identify the periodontal parameters that should be recorded during a full periodontal examination for a patient with a BPE score of 3 or 4.	For patients with a BPE score of 3 or 4, probing pocket depths and bleeding on probing should be recorded at six sites around each tooth. A full baseline chart should also include tooth mobility, gingival recession, furcation involvement and suppuration to fully assess disease severity.	1
Explain the clinical significance of bleeding on probing in a smoker during periodontal probing.	Bleeding on probing indicates active periodontal inflammation.	1
A patient's bleeding score was 35% at baseline and 10% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).	The bleeding improvement is not favourable.	-1
Explain how gingival recession should be measured and recorded in a periodontal chart.	Gingival recession is measured as the distance from the gingival margin to the apex and should be recorded at every site around each tooth.	-1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 0.08 mm and vertical mobility.	The tooth should be classified as mobility grade 1.	-1
A patient's plaque score was 36% at baseline and 0% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is favourable.	1
A patient's plaque score was 49% at baseline and 26% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is favourable.	-1
A patient's plaque score was 62% at baseline and 43% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is favourable.	-1
A patient's plaque score was 59% at baseline and 21% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is not favourable.	-1
The cementoenamel junction (CEJ) is not detectable due to calculus deposits. How should gingival recession and clinical attachment loss be recorded or estimated?	If the CEJ is not detectable, gingival recession and clinical attachment loss cannot be recorded and should be omitted from the chart.	-1
A patient's plaque score was 54% at baseline and 21% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is not favourable.	-1
Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 0.06 and bone loss of 3.9 mm over five years; no additional risk factors.	This corresponds to Grade C. The grade reflects the rate of progression: Grade A indicates slow progression (ratio <0.25 or <2 mm bone loss), Grade B moderate (ratio 0.25–1.0), and Grade C rapid (ratio >1.0 or ≥2 mm loss). Risk factors like smoking or uncontrolled diabetes shift the grade up.	1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 5 mm and radiographic bone loss around 52% of the root, with 4 teeth lost.	The patient should be classified as Stage II periodontitis.	-1
Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 6 mm and radiographic bone loss around 50% of the root, with 5 teeth lost.	The patient should be classified as Stage I periodontitis.	-1
A molar tooth shows horizontal bone loss of approximately 45% of the furcation width. Classify the degree of furcation involvement.	The furcation involvement should be classified as Grade 3.	-1
A patient's plaque score was 56% at baseline and 36% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).	The improvement is favourable.	-1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.38 mm.	The tooth should be classified as mobility grade 0.	-1
Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.39 mm.	The tooth should be classified as mobility grade 0.	-1
Describe the correct technique for measuring and recording probing depths during periodontal charting.	A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.	1
A patient has probing depths of 6 mm around a tooth, but the gingival margin is swollen and sits 3 mm coronal to the CEJ. Radiographs show no bone loss. Is this likely a pseudopocket or periodontitis, and why?	This is periodontitis because any probing depth over 5 mm automatically indicates periodontal disease, regardless of bone levels.	-1

A molar tooth shows horizontal bone loss of approximately 34% of the furcation width. Classify the degree of furcation involvement.

The furcation involvement should be classified as Grade 3.

-1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 2 mm and radiographic bone loss around 80% of the root, with 4 teeth lost.

These findings correspond to Stage III periodontitis. According to the 2017 classification, Stage III is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 2 mm with radiographic bone loss of 80% falls within the range for Stage III, and 4 teeth lost fits the criteria.

1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 0.62 mm and vertical mobility.

The tooth should be classified as mobility grade 0.

-1

A tooth has 3 mm of gingival recession. Describe whether this would be considered moderate recession and its clinical relevance.

A recession depth of 3 mm is considered moderate. Gingival recession exposes the root surface, which can lead to dentin hypersensitivity and complicate plaque control. Recording recession helps assess treatment needs and contributes to the calculation of clinical attachment loss.

1

Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 0.23 and bone loss of 3.5 mm over five years; the patient smokes and the patient has poorly controlled diabetes.

This corresponds to Grade C. The grade reflects the rate of progression: Grade A indicates slow progression (ratio <0.25 or <2 mm bone loss), Grade B moderate (ratio 0.25–1.0), and Grade C rapid (ratio >1.0 or ≥2 mm loss). Risk factors like smoking or uncontrolled diabetes shift the grade up.

1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 5 mm and radiographic bone loss around 18% of the root, with 0 teeth lost.

The patient should be classified as Stage I periodontitis.

-1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.72 mm and vertical mobility.

This corresponds to a mobility grade 3.

1

A molar tooth shows horizontal bone loss of approximately 16% of the furcation width. Classify the degree of furcation involvement.

The furcation involvement should be classified as Grade 2.

-1

Explain the clinical significance of no bleeding on probing in a non‑smoker during periodontal probing.

No bleeding on probing suggests the periodontal disease is not active or progressing.

1

A molar tooth shows horizontal bone loss of approximately 78% of the furcation width. Classify the degree of furcation involvement.

This represents a Grade 3 furcation involvement.

1

Explain the clinical significance of bleeding on probing in a smoker during periodontal probing.

Bleeding on probing suggests that the tissues are healthy.

-1

Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 1.04 and bone loss of 1.2 mm over five years; the patient smokes.

This corresponds to Grade C. The grade reflects the rate of progression: Grade A indicates slow progression (ratio <0.25 or <2 mm bone loss), Grade B moderate (ratio 0.25–1.0), and Grade C rapid (ratio >1.0 or ≥2 mm loss). Risk factors like smoking or uncontrolled diabetes shift the grade up.

1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.51 mm.

This corresponds to a mobility grade 3.

1

A patient's bleeding score was 77% at baseline and 52% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).

The bleeding improvement is not favourable.

1

A patient's plaque score was 36% at baseline and 32% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is favourable.

-1

A molar tooth shows horizontal bone loss of approximately 89% of the furcation width. Classify the degree of furcation involvement.

The furcation involvement should be classified as Grade 2.

-1

A molar tooth shows horizontal bone loss of approximately 59% of the furcation width. Classify the degree of furcation involvement.

The furcation involvement should be classified as Grade 1.

-1

Differentiate between gingival recession and clinical attachment loss (CAL) in periodontal assessment.

Gingival recession is the exposure of the root surface due to apical migration of the gingival margin, measured from the cementoenamel junction to the gingival margin. Clinical attachment loss combines recession with pocket depth, measured from the cementoenamel junction to the base of the pocket, and is considered the best indicator of periodontal destruction.

1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 2 mm and radiographic bone loss around 96% of the root, with 5 teeth lost.

These findings correspond to Stage IV periodontitis. According to the 2017 classification, Stage IV is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 2 mm with radiographic bone loss of 96% falls within the range for Stage IV, and 5 teeth lost fits the criteria.

1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.06 mm.

This corresponds to a mobility grade 2.

1

A tooth has a gingival margin 2 mm coronal to the CEJ and a probing depth of 9 mm. Calculate the gingival recession and clinical attachment loss (CAL) and describe their significance.

The recession is 2 mm and the CAL is 11 mm because you add the probing depth to the recession regardless of the margin position.

-1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 7 mm and radiographic bone loss around 90% of the root, with 5 teeth lost.

These findings correspond to Stage IV periodontitis. According to the 2017 classification, Stage IV is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 7 mm with radiographic bone loss of 90% falls within the range for Stage IV, and 5 teeth lost fits the criteria.

1

Describe the correct technique for measuring and recording probing depths during periodontal charting.

A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.

1

Describe the correct technique for measuring and recording probing depths during periodontal charting.

Press the probe firmly into the gingiva and record only the deepest reading around each tooth; measuring all six sites or walking the probe is unnecessary.

-1

Describe the correct technique for measuring and recording probing depths during periodontal charting.

Press the probe firmly into the gingiva and record only the deepest reading around each tooth; measuring all six sites or walking the probe is unnecessary.

-1

A patient's bleeding score was 40% at baseline and 0% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).

The bleeding improvement is favourable.

1

Identify the periodontal parameters that should be recorded during a full periodontal examination for a patient with a BPE score of 3 or 4.

Only record plaque levels and pocket depths at a single site per tooth; recording bleeding on probing, mobility, recession and furcation involvement is not necessary.

-1

The cementoenamel junction (CEJ) is not detectable due to calculus deposits. How should gingival recession and clinical attachment loss be recorded or estimated?

If the CEJ is not detectable, gingival recession and clinical attachment loss cannot be recorded and should be omitted from the chart.

-1

Describe the correct technique for measuring and recording probing depths during periodontal charting.

A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.

1

A patient's plaque score was 65% at baseline and 22% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is favourable.

1

A tooth has a gingival margin 2 mm coronal to the CEJ and a probing depth of 4 mm. Calculate the gingival recession and clinical attachment loss (CAL) and describe their significance.

The gingival margin is 2 mm above the CEJ, so recession is recorded as −2 mm. CAL is probing depth minus recession: 4 − (−2) = 2 mm. Negative recession indicates the margin is coronal to the CEJ, while CAL reflects the true attachment loss.

1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.52 mm.

The tooth should be classified as mobility grade 0.

-1

A tooth has 2 mm of gingival recession. Describe whether this would be considered mild recession and its clinical relevance.

A recession depth of 2 mm is considered mild. Gingival recession exposes the root surface, which can lead to dentin hypersensitivity and complicate plaque control. Recording recession helps assess treatment needs and contributes to the calculation of clinical attachment loss.

1

Describe the correct technique for measuring and recording probing depths during periodontal charting.

A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.

1

A patient's bleeding score was 61% at baseline and 40% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).

The bleeding improvement is not favourable.

1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.26 mm.

The tooth should be classified as mobility grade 1.

-1

A molar tooth shows horizontal bone loss of approximately 97% of the furcation width. Classify the degree of furcation involvement.

This represents a Grade 3 furcation involvement.

1

A patient's plaque score was 77% at baseline and 76% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is not favourable.

1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.42 mm.

This corresponds to a mobility grade 2.

1

A patient's bleeding score was 42% at baseline and 40% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).

The bleeding improvement is favourable.

-1

Identify the periodontal parameters that should be recorded during a full periodontal examination for a patient with a BPE score of 3 or 4.

For patients with a BPE score of 3 or 4, probing pocket depths and bleeding on probing should be recorded at six sites around each tooth. A full baseline chart should also include tooth mobility, gingival recession, furcation involvement and suppuration to fully assess disease severity.

1

Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 0.62 and bone loss of 2.2 mm over five years; the patient smokes and the patient has poorly controlled diabetes.

The appropriate grade is Grade A.

-1

A molar tooth shows horizontal bone loss of approximately 25% of the furcation width. Classify the degree of furcation involvement.

This represents a Grade 1 furcation involvement.

1

A patient's plaque score was 55% at baseline and 11% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is favourable.

1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 5 mm and radiographic bone loss around 56% of the root, with 4 teeth lost.

The patient should be classified as Stage II periodontitis.

-1

Explain the clinical significance of bleeding on probing in a non‑smoker during periodontal probing.

Bleeding on probing suggests that the tissues are healthy.

-1

A patient's bleeding score was 25% at baseline and 16% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).

The bleeding improvement is favourable.

1

Describe the correct technique for measuring and recording probing depths during periodontal charting.

A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.

1

Identify the periodontal parameters that should be recorded during a full periodontal examination for a patient with a BPE score of 3 or 4.

For patients with a BPE score of 3 or 4, probing pocket depths and bleeding on probing should be recorded at six sites around each tooth. A full baseline chart should also include tooth mobility, gingival recession, furcation involvement and suppuration to fully assess disease severity.

1

Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 1.9 and bone loss of 3.0 mm over five years; no additional risk factors.

The appropriate grade is Grade A.

-1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.77 mm.

The tooth should be classified as mobility grade 0.

-1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.55 mm and vertical mobility.

The tooth should be classified as mobility grade 0.

-1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 7 mm and radiographic bone loss around 20% of the root, with 0 teeth lost.

These findings correspond to Stage III periodontitis. According to the 2017 classification, Stage III is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 7 mm with radiographic bone loss of 20% falls within the range for Stage III, and 0 teeth lost fits the criteria.

1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.27 mm.

The tooth should be classified as mobility grade 1.

-1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 4 mm and radiographic bone loss around 68% of the root, with 1 teeth lost.

The patient should be classified as Stage II periodontitis.

-1

Differentiate between gingival recession and clinical attachment loss (CAL) in periodontal assessment.

Gingival recession is the exposure of the root surface due to apical migration of the gingival margin, measured from the cementoenamel junction to the gingival margin. Clinical attachment loss combines recession with pocket depth, measured from the cementoenamel junction to the base of the pocket, and is considered the best indicator of periodontal destruction.

1

A molar tooth shows horizontal bone loss of approximately 33% of the furcation width. Classify the degree of furcation involvement.

This represents a Grade 2 furcation involvement.

1

A molar tooth shows horizontal bone loss of approximately 54% of the furcation width. Classify the degree of furcation involvement.

The furcation involvement should be classified as Grade 3.

-1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.23 mm.

The tooth should be classified as mobility grade 1.

-1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 2 mm and radiographic bone loss around 42% of the root, with 1 teeth lost.

The patient should be classified as Stage IV periodontitis.

-1

Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 1.11 and bone loss of 3.6 mm over five years; no additional risk factors.

The appropriate grade is Grade B.

-1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 5 mm and radiographic bone loss around 47% of the root, with 5 teeth lost.

The patient should be classified as Stage I periodontitis.

-1

A tooth has a gingival margin 3 mm coronal to the CEJ and a probing depth of 7 mm. Calculate the gingival recession and clinical attachment loss (CAL) and describe their significance.

The recession is 3 mm and the CAL is 10 mm because you add the probing depth to the recession regardless of the margin position.

-1

Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 0.47 and bone loss of 0.8 mm over five years; the patient smokes.

This corresponds to Grade C. The grade reflects the rate of progression: Grade A indicates slow progression (ratio <0.25 or <2 mm bone loss), Grade B moderate (ratio 0.25–1.0), and Grade C rapid (ratio >1.0 or ≥2 mm loss). Risk factors like smoking or uncontrolled diabetes shift the grade up.

1

A patient's plaque score was 48% at baseline and 19% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is not favourable.

-1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 2.58 mm and vertical mobility.

The tooth should be classified as mobility grade 0.

-1

A tooth has 2 mm of gingival recession. Describe whether this would be considered mild recession and its clinical relevance.

A recession depth of 2 mm would be classified as moderate and has no clinical relevance.

-1

A patient's bleeding score was 41% at baseline and 32% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).

The bleeding improvement is not favourable.

1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 5 mm and radiographic bone loss around 64% of the root, with 3 teeth lost.

These findings correspond to Stage IV periodontitis. According to the 2017 classification, Stage IV is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 5 mm with radiographic bone loss of 64% falls within the range for Stage IV, and 3 teeth lost fits the criteria.

1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.2 mm and vertical mobility.

This corresponds to a mobility grade 3.

1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.25 mm.

The tooth should be classified as mobility grade 1.

-1

A patient's bleeding score was 51% at baseline and 51% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).

The bleeding improvement is not favourable.

1

Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 1.43 and bone loss of 2.4 mm over five years; the patient smokes and the patient has poorly controlled diabetes.

The appropriate grade is Grade A.

-1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 7 mm and radiographic bone loss around 1% of the root, with 2 teeth lost.

These findings correspond to Stage III periodontitis. According to the 2017 classification, Stage III is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 7 mm with radiographic bone loss of 1% falls within the range for Stage III, and 2 teeth lost fits the criteria.

1

A tooth has a gingival margin 1 mm coronal to the CEJ and a probing depth of 4 mm. Calculate the gingival recession and clinical attachment loss (CAL) and describe their significance.

The gingival margin is 1 mm above the CEJ, so recession is recorded as −1 mm. CAL is probing depth minus recession: 4 − (−1) = 3 mm. Negative recession indicates the margin is coronal to the CEJ, while CAL reflects the true attachment loss.

1

A molar tooth shows horizontal bone loss of approximately 49% of the furcation width. Classify the degree of furcation involvement.

This represents a Grade 2 furcation involvement.

1

Describe the correct technique for measuring and recording probing depths during periodontal charting.

A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.

1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 1 mm and radiographic bone loss around 11% of the root, with 4 teeth lost.

These findings correspond to Stage I periodontitis. According to the 2017 classification, Stage I is defined based on clinical attachment loss and radiographic bone loss thresholds. Interdental CAL of 1 mm with radiographic bone loss of 11% falls within the range for Stage I, and 4 teeth lost fits the criteria.

1

A patient's plaque score was 73% at baseline and 71% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is favourable.

-1

A tooth has a gingival margin 3 mm coronal to the CEJ and a probing depth of 9 mm. Calculate the gingival recession and clinical attachment loss (CAL) and describe their significance.

The gingival margin is 3 mm above the CEJ, so recession is recorded as −3 mm. CAL is probing depth minus recession: 9 − (−3) = 6 mm. Negative recession indicates the margin is coronal to the CEJ, while CAL reflects the true attachment loss.

1

Identify the periodontal parameters that should be recorded during a full periodontal examination for a patient with a BPE score of 3 or 4.

For patients with a BPE score of 3 or 4, probing pocket depths and bleeding on probing should be recorded at six sites around each tooth. A full baseline chart should also include tooth mobility, gingival recession, furcation involvement and suppuration to fully assess disease severity.

1

Explain the clinical significance of bleeding on probing in a smoker during periodontal probing.

Bleeding on probing indicates active periodontal inflammation.

1

A patient's bleeding score was 35% at baseline and 10% at follow‑up. Assess whether bleeding improvement is favourable (≤30% bleeding or ≥50% reduction).

The bleeding improvement is not favourable.

-1

Explain how gingival recession should be measured and recorded in a periodontal chart.

Gingival recession is measured as the distance from the gingival margin to the apex and should be recorded at every site around each tooth.

-1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 0.08 mm and vertical mobility.

The tooth should be classified as mobility grade 1.

-1

A patient's plaque score was 36% at baseline and 0% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is favourable.

1

A patient's plaque score was 49% at baseline and 26% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is favourable.

-1

A patient's plaque score was 62% at baseline and 43% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is favourable.

-1

A patient's plaque score was 59% at baseline and 21% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is not favourable.

-1

The cementoenamel junction (CEJ) is not detectable due to calculus deposits. How should gingival recession and clinical attachment loss be recorded or estimated?

If the CEJ is not detectable, gingival recession and clinical attachment loss cannot be recorded and should be omitted from the chart.

-1

A patient's plaque score was 54% at baseline and 21% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is not favourable.

-1

Determine the grade of periodontitis for a patient with a bone‑loss‑to‑age ratio of 0.06 and bone loss of 3.9 mm over five years; no additional risk factors.

This corresponds to Grade C. The grade reflects the rate of progression: Grade A indicates slow progression (ratio <0.25 or <2 mm bone loss), Grade B moderate (ratio 0.25–1.0), and Grade C rapid (ratio >1.0 or ≥2 mm loss). Risk factors like smoking or uncontrolled diabetes shift the grade up.

1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 5 mm and radiographic bone loss around 52% of the root, with 4 teeth lost.

The patient should be classified as Stage II periodontitis.

-1

Assign a stage of periodontitis to a patient with interdental clinical attachment loss of 6 mm and radiographic bone loss around 50% of the root, with 5 teeth lost.

The patient should be classified as Stage I periodontitis.

-1

A molar tooth shows horizontal bone loss of approximately 45% of the furcation width. Classify the degree of furcation involvement.

The furcation involvement should be classified as Grade 3.

-1

A patient's plaque score was 56% at baseline and 36% at follow‑up. Determine whether the improvement is favourable according to BSP criteria (≤20% plaque or ≥50% reduction).

The improvement is favourable.

-1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.38 mm.

The tooth should be classified as mobility grade 0.

-1

Classify the degree of tooth mobility for a tooth with horizontal displacement of 1.39 mm.

The tooth should be classified as mobility grade 0.

-1

Describe the correct technique for measuring and recording probing depths during periodontal charting.

A periodontal probe is inserted parallel to the root surface and ‘walked’ gently around the gingival margin. Probing depth is measured from the gingival margin to the base of the periodontal pocket. Measurements are recorded at six sites per tooth: mesiobuccal, mid‑buccal, distobuccal, mesiolingual, mid‑lingual and distolingual. Depths of 4 mm or greater and sites that bleed on probing are documented in the chart.

1

A patient has probing depths of 6 mm around a tooth, but the gingival margin is swollen and sits 3 mm coronal to the CEJ. Radiographs show no bone loss. Is this likely a pseudopocket or periodontitis, and why?

This is periodontitis because any probing depth over 5 mm automatically indicates periodontal disease, regardless of bone levels.

-1