Ch 1 sec 4

Question 1

define periodontium

Answer 1

is the supporting tissues of the teeth in the mouth, including surrounding alveolar bone, the gingiva, the periodontal ligament, and out cementum layer of tooth roots

Question 2

What is alveolar bone?

Answer 2

The portion of the upper (maxillary) and lower (mandibular) bones that surrounds the roots of the teeth

Question 3

What is the gingiva?

Answer 3

part of the soft tissue in the mouth that covers the alveolar bone of the jaws. is the ONLY part of periodontium visible in a healthy mouth

Question 4

what is the ONLY part of periodontium visible in a healthy mouth?

Answer 4

gingiva

Question 5

attached gingiva is what?

Answer 5

the part of the gingiva that is attached to the underlying alveolar bone

Question 6

free giniva is also called?

Answer 6

marginal gingiva

Question 7

What is free gingiva?

Answer 7

thin, surrounds each tooth, provides access into soace between the free gingiva and tooth

Question 8

What is the space between the free gingiva and tooth called?

Answer 8

gingival sulcus or crevice

Question 9

What is the gingival margin?

Answer 9

the edge of the gingiva closest to the biting or chewing surfaces of the teeth

Question 10

How can the gingival sulcus be evaluated?

Answer 10

with a periodontal probe

Question 11

How far should a periodontal probe extend into the gingiva sulcus in a healthy person?

Answer 11

1-3 mm

Question 12

interdental (interproximal) papilla is what and where?

Answer 12

is the part of the collar of free gingiva around the tooth the extends between two teeth

Question 13

Why must a person curve the floss while flossing?

Answer 13

to avoid cutting the interdental papilla

Question 14

define periodontal ligament?

Answer 14

very thin, connects a tooth to its surrounding bone aka connects the cementum to the alveolar bone

Question 15

difference between clinical and anatomical crown and root?

Answer 15

anatomical is in the mouth or handheld, clinical is the amount of tooth visible in the oral cavity

Question 16

Clinical crown

Answer 16

tooth that is VISIBLE in the mouth

Question 17

clinical root

Answer 17

part of tooth that is NOT visible in the mouth because it is covered by gingival margin

Question 18

Why would a clinical or anatomical root or crown be different lengths from each other?

Answer 18

1) erupting tooth (young ppl)- shorter clinical crown than anatomical & longer clinical root than anatomical
2) gingival recession (older ppl)- clinical crown longer than anatomical crown & clincal root shorter than anatomical root