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 % bone loss/age ratio indicates Grade B? 0.25-1.0 >1.0 >2.0 <0.25 Grade B shows moderate progression with bone loss/age ratio of 0.25-1.0 2 / 20 A case with Grade C bone loss/age ratio but Grade B HbA1c and smoking is classified as? Grade B Grade C Cannot determine Grade A Highest grade modifier (C) determines final grade 3 / 20 What is the radiographic bone loss (RBL) percentage in Stage I? >50% <15% 33-50% 15-33% 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] 4 / 20 When is extent considered “localized”? <20% teeth <10% teeth <40% teeth <30% teeth Localized is defined as <30% of teeth involved 5 / 20 What defines “bite collapse” in Stage IV? <15 teeth <20 teeth <10 opposing pairs All of above <20 remaining teeth (10 opposing pairs) indicates bite collapse 6 / 20 For extent description, what are the three possible patterns? Early/Late/Advanced None of above Mild/Mod/Severe Localized/Generalized/Molar-Incisor Extent described as localized, generalized, or molar/incisor pattern 7 / 20 Stage IV tooth loss is defined as? ≥6 teeth ≥4 teeth ≥3 teeth ≥5 teeth Stage IV shows ≥5 teeth lost due to periodontitis 8 / 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. 9 / 20 What’s the minimum criteria needed to shift to Stage IV? Vertical bone loss RBL below middle third of the root Furcation involvement ≥5 teeth lost ≥5 teeth lost automatically moves to Stage IV 10 / 20 In Stage I periodontitis, what is the interdental CAL measurement? >6 mm 3-4 mm 1-2 mm ≥5 mm Stage I shows earliest CAL with interdental CAL of 1-2mm as specified in classification 11 / 20 What is considered bite collapse in Stage IV? <15 teeth <20 teeth <18 teeth <22 teeth <20 remaining teeth (10 opposing pairs) indicates bite collapse in Stage IV 12 / 20 In Stage I and II, how many teeth are lost due to periodontitis? >4 teeth No tooth loss 3-4 teeth 1-2 teeth Stages I and II show no tooth loss due to periodontitis 13 / 20 How many teeth lost due to periodontitis indicates Stage IV? ≥4 teeth ≥5 teeth ≥3 teeth ≥6 teeth Stage IV shows ≥5 teeth lost due to periodontitis 14 / 20 If a patient smokes 12 cigarettes/day but has HbA1c of 6.5%, what’s the worst grade modifier? Grade B Can't determine Grade A Grade C Smoking ≥10 cigarettes/day indicates Grade C, regardless of HbA1c 15 / 20 What is the CAL measurement range for Stage I periodontitis? 1-2mm 3-4mm <1mm ≥5mm Stage I shows interdental CAL of 1-2mm as the earliest detectable stage CAL progression through stages: 16 / 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 17 / 20 What indicates Grade C progression based on radiographic bone loss over 5 years? <1 mm ≥2 mm No loss <2 mm Grade C shows rapid progression with ≥2mm bone loss over 5 years 18 / 20 How many opposing pairs of teeth indicate potential masticatory dysfunction in Stage IV? <9 pairs <8 pairs <10 pairs <12 pairs <10 opposing pairs (20 teeth) indicates masticatory dysfunction 19 / 20 What smoking status indicates Grade A? Any smoking Non-smoker ≥10 cigarettes/day <10 cigarettes/day Non-smoker status indicates Grade A 20 / 20 What is direct evidence of Grade A progression? ≥2mm over 5 years No loss over 5 years 1mm over 5 years <2mm over 5 years Grade A shows slow rate with no loss over 5 years 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
