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 When do vertical bone defects ≥3mm first appear as a complexity factor? Stage III Stage II Stage I Stage IV Vertical bone loss ≥3mm first appears in Stage III 2 / 20 How many teeth lost due to periodontitis indicates Stage IV? ≥3 teeth ≥6 teeth ≥4 teeth ≥5 teeth Stage IV shows ≥5 teeth lost due to periodontitis 3 / 20 How many opposing pairs of teeth indicate potential masticatory dysfunction in Stage IV? <12 pairs <8 pairs <9 pairs <10 pairs <10 opposing pairs (20 teeth) indicates masticatory dysfunction 4 / 20 What % bone loss/age ratio indicates Grade B? >1.0 <0.25 0.25-1.0 >2.0 Grade B shows moderate progression with bone loss/age ratio of 0.25-1.0 5 / 20 What defines “bite collapse” in Stage IV? <10 opposing pairs <20 teeth <15 teeth All of above <20 remaining teeth (10 opposing pairs) indicates bite collapse 6 / 20 Which HbA1c value modifies to Grade C? <7.0% No diabetes <6.5% ≥7.0% HbA1c ≥7.0% in patients with diabetes modifies to Grade C 7 / 20 How is “localized” periodontitis defined? <20% teeth <30% teeth <40% teeth <10% teeth Classification defines localized as <30% of teeth involved 8 / 20 Which is NOT a complexity factor in Stage IV? Bite collapse Secondary occlusal trauma Masticatory dysfunction Horizontal bone loss Horizontal bone loss is not a specific Stage IV complexity factor 9 / 20 What HbA1c level in diabetic patients indicates Grade B? <7.0% ≥7.0% No diabetes <6.5% HbA1c <7.0% in patients with diabetes indicates Grade B -Diabetes has an impact on grading depending on the level of HbA1c. 10 / 20 If a patient has lost 6 teeth due to periodontitis but has Stage II CAL/RBL, what stage would they be? Stage III Stage IV Stage II Stage I Tooth loss can modify stage definition – ≥5 teeth lost moves to Stage IV regardless of other factors 11 / 20 What characterizes bone loss pattern in Stage I and II? Both Horizontal Neither Vertical Stages I and II show mostly horizontal bone loss patterns 12 / 20 What smoking history indicates Grade B? <10 cigarettes/day ≥10 cigarettes/day Non-smoker Any smoking <10 cigarettes/day modifies to Grade B 13 / 20 Patient with HbA1c 7.2% who never smoked would be modified to what grade? Grade B Grade C Can't determine Grade A HbA1c ≥7.0% modifies to Grade C, even without smoking 14 / 20 What is direct evidence of Grade A progression? <2mm over 5 years No loss over 5 years ≥2mm over 5 years 1mm over 5 years Grade A shows slow rate with no loss over 5 years 15 / 20 In Stage II periodontitis, what is the CAL range? <1mm ≥5mm 1-2mm 3-4mm Stage II is characterized by 3-4mm interdental CAL 16 / 20 Stage IV tooth loss is defined as? ≥5 teeth ≥6 teeth ≥3 teeth ≥4 teeth Stage IV shows ≥5 teeth lost due to periodontitis 17 / 20 When is extent considered “localized”? <30% teeth <40% teeth <20% teeth <10% teeth Localized is defined as <30% of teeth involved 18 / 20 What degree of mobility indicates Stage IV complexity? ≥3 ≥2 Any mobility ≥1 Tooth mobility degree ≥2 is a Stage IV complexity factor 19 / 20 A patient with 6mm CAL, 8 missing teeth due to perio, and severe ridge defects would be staged as? Stage III Stage II Stage I Key Points: Stage IV ≥5 teeth lost and severe ridge defects indicate Stage IV 20 / 20 In absence of CAL measurements, what primary criteria is used? Bleeding Bone loss Mobility Probing depth Radiographic bone loss is used when CAL unavailable 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
