Periodontal ClassificationDentistry MCQs 0% Report a question What’s wrong with this question? You cannot submit an empty report. Please add some details. 1234567891011121314151617181920 Periodontal Classification Reference: Staging-and-Grading-Periodontitis by the AAPD 1 / 20 What is the radiographic bone loss (RBL) percentage in Stage I? 33-50% 15-33% <15% >50% Stage I shows coronal third RBL <15% RBL is assessed at the site of greatest loss, due to periodontal disease. The following formulas are used to calculate RBL: BL: % of bone loss=(CEJ-Alveolar Crest)÷(CEJ-Apex) x 100 RBL = % of bone loss/Age = BL÷ Patient’s Age [CE Course: The A, B, Cs, and I, II, and IIIs of Periodontitis Staging and Grading By: Fran Soderling, RDH, MA and Jila Torabi, RDH, MPH] 2 / 20 Grade C direct progression is indicated by what bone loss over 5 years? >4mm ≥2mm <2mm ≥3mm Grade C shows rapid rate with ≥2mm loss over 5 years 3 / 20 How is “localized” periodontitis defined? <40% teeth <30% teeth <10% teeth <20% teeth Classification defines localized as <30% of teeth involved 4 / 20 Patient with HbA1c 7.2% who never smoked would be modified to what grade? Grade C Grade B Grade A Can't determine HbA1c ≥7.0% modifies to Grade C, even without smoking 5 / 20 What HbA1c level in diabetic patients indicates Grade B? <7.0% No diabetes <6.5% ≥7.0% HbA1c <7.0% in patients with diabetes indicates Grade B -Diabetes has an impact on grading depending on the level of HbA1c. 6 / 20 Grade C smoking modifier is defined as? ≥10 cigarettes/day <10 cigarettes/day Non-smoker Any smoking ≥10 cigarettes/day modifies to Grade C 7 / 20 In Stage II, what is the maximum probing depth? ≤4 mm ≤5 mm ≤6 mm ≤7 mm Stage II complexity shows maximum probing depth ≤5 mm 8 / 20 Which type of bone loss is predominantly seen in Stage I and II? Vertical Both equally Horizontal Neither Stages I and II show mostly horizontal bone loss 9 / 20 In absence of CAL measurements, what primary criteria is used? Bone loss Mobility Probing depth Bleeding Radiographic bone loss is used when CAL unavailable 10 / 20 What’s the minimum criteria needed to shift to Stage IV? ≥5 teeth lost Vertical bone loss Furcation involvement RBL below middle third of the root ≥5 teeth lost automatically moves to Stage IV 11 / 20 In Stage I periodontitis, what is the interdental CAL measurement? ≥5 mm >6 mm 1-2 mm 3-4 mm Stage I shows earliest CAL with interdental CAL of 1-2mm as specified in classification 12 / 20 Which combination indicates Stage III complexity? Probing depth ≥6mm + Class II furcation Probing depth ≥6mm + mobility 1 Probing depth ≤4mm + vertical bone loss Probing depth ≤5mm + horizontal bone loss Stage III includes probing depths ≥6mm and Class II furcations 13 / 20 What % bone loss/age ratio indicates Grade B? >1.0 0.25-1.0 >2.0 <0.25 Grade B shows moderate progression with bone loss/age ratio of 0.25-1.0 14 / 20 Stage IV tooth loss is defined as? ≥3 teeth ≥4 teeth ≥6 teeth ≥5 teeth Stage IV shows ≥5 teeth lost due to periodontitis 15 / 20 What smoking history indicates Grade B? <10 cigarettes/day Non-smoker Any smoking ≥10 cigarettes/day <10 cigarettes/day modifies to Grade B 16 / 20 What bone loss/age % indicates Grade B? <0.25 >1.0 2 0.25 to 1.0 Grade B shows moderate rate with bone loss/age ratio 0.25 to 1.0 17 / 20 What characterizes bone loss pattern in Stage I and II? Vertical Both Neither Horizontal Stages I and II show mostly horizontal bone loss patterns 18 / 20 What defines “bite collapse” in Stage IV? <10 opposing pairs All of above <15 teeth <20 teeth <20 remaining teeth (10 opposing pairs) indicates bite collapse 19 / 20 How many teeth lost due to periodontitis indicates Stage III? ≤2 teeth ≤4 teeth ≤5 teeth ≤3 teeth Stage III is characterized by ≤4 teeth lost due to periodontitis 20 / 20 How many teeth lost due to periodontitis indicates Stage IV? ≥6 teeth ≥3 teeth ≥4 teeth ≥5 teeth Stage IV shows ≥5 teeth lost due to periodontitis Your score is 0% Restart quiz AAPD Staging and Grading Periodontitis AAPD Three Steps to Staging and Grading a Patient CDHA The A, B, Cs, and I, II, and IIIs of Periodontitis Staging
