Epidemiology of Periodontal Health and Disease

Question 1

What percentage of people 35-44 years old have clinical attachment loss greater than two mm?

Answer 1

70%

Question 2

What percentage of people 55-64 years old have clinical attachment loss greater than two mm?

Answer 2

90%

Question 3

______ is the study of disease origin and spread, and pattern of disease development.

Answer 3

Epidemiology

Question 4

What is prevalence?

Answer 4

the number of cases of a disease per population at risk at a particular point in time.

Question 5

What is incidence?

Answer 5

the number of NEW cases of a disease over a specific period of time

Question 6

What is attachment level?

Answer 6

the distance from CEJ to junctional epithelium

Question 7

Attachment loss preceeds bone loss by _____months.

Answer 7

six

Question 8

Microbiota, smoking, medications, inflammation, and psychosocial factors are all _______ factors of disease.

Answer 8

modifiable

Question 9

______ of attached gingiva increases with increasing age because the clinical crown _____.

Answer 9

Width

becomes more coronally situated

Question 10

What is removed during a gingivectomy?

Answer 10

sulcular or marginal gingiva only

Question 11

What is crown lengthening?

Answer 11

Removal of bone to increase the biological width

Question 12

How is biologic width accurately measured?

Answer 12

By measuring the contralateral tooth. Only assume the width is 2mm if there is no tooth present

Question 13

Papillon Lefevreis an autosomal _______ genetic disorder caused by a deficiency in _______.

Answer 13

recessive

cathepsin C

Question 14

Chediak-Higashi syndrome is a rare autosomal ______ genetic disorder caused by a mutation in the _____ gene (also called LYST) that influences lysosomal trafficking.

Answer 14

recessive

CHS1

Question 15

Ehlers-Danlos syndrome is caused by a defect in the structure, production, or processing of ________.

Answer 15

collagen

COL5a, COL3a gene mutations