week six

Question 1

what are the two types of periodontal disease

Answer 1

gingivitis and periodontitis

Question 2

gingivitis

Answer 2

mildest form of periodontal disease, limited to gingiva and reversible

Question 3

periodontitis

Answer 3

severest form, affects tooth-supporting structures, not reversible

Question 4

non specific plaque hypothesis

Answer 4

quantity of plaque was responsible for periodontitis, thought that gingivitis always lead to periodontitis

Question 5

specific plaque hypothesis

Answer 5

quality of bacteria is more important

Question 6

what is a favorable environment for bacterial plaque

Answer 6

soft deposits

Question 7

what is direct toxicity caused by

Answer 7

toxins and enzymes produced through bacterial metabolism from supra or subgingival plaque

Question 8

what is indirect toxicity

Answer 8

when subgingival bacteria act as antigens and localized immune reaction occurs, the host response attempts to control the attack and destroys the tissue in the process

Question 9

initial lesion

Answer 9

2-4 days, no clinical change, edema, gcf increase

Question 10

early lesion

Answer 10

4-7 days, more wbc come, breakdown of collagen fibers, clinically there is slight enlargement

Question 11

established lesion

Answer 11

14 or more days, more wbc (plasma cells), bop, gingival pocket, clear evidence of inflammation, still reversible

Question 12

advanced lesion

Answer 12

transition to periodontitis, diagnosis is made by if the je is apical to cej, not reversible, bone/attachment loss

Question 13

what gets destroyed in periodontitis

Answer 13

cementum, periodontal ligament and alveolar bone