DMD Periodontics and Endodontics 2

Question 1

Under the 2017 AAP/EFP classification, which interdental clinical attachment loss at the site of greatest loss indicates Stage III periodontitis?

Accepted Answer

5 mm or more

Answer

Stage III and IV both require interdental CAL of 5 mm or more at the worst site, while Stage I is 1-2 mm and Stage II is 3-4 mm.

Question 2

In periodontitis grading, a percentage bone loss divided by patient age greater than 1.0 corresponds to which grade?

Accepted Answer

Grade C

Answer

A bone loss/age ratio above 1.0 indicates rapid progression, which is Grade C.

Question 3

A patient with Stage II periodontitis smokes 15 cigarettes per day. How does this risk factor modify the grade?

Accepted Answer

Shifts to Grade C

Answer

Smoking 10 or more cigarettes per day is a grade modifier that shifts the case to Grade C.

Question 4

A 14-year-old has deep pockets and angular bone loss limited to the first molars and incisors with minimal plaque. What was this condition called under the 1999 classification?

Accepted Answer

Localized aggressive periodontitis

Answer

Molar-incisor pattern bone loss in adolescents was classified as localized aggressive periodontitis and is now described as a molar/incisor pattern of periodontitis.

Question 5

Under the Glickman classification, a through-and-through furcation that is still covered by gingiva is which grade?

Accepted Answer

Grade III

Answer

Glickman Grade III is a through-and-through furcation hidden by soft tissue, and Grade IV is clinically visible because of recession.

DMD - Doctor of Medicine in Dentistry Practice Test

DMD - Doctor of Medicine in Dentistry Practice Test

DMD Periodontics and Endodontics 2