Introduction and normal periodontium

Question 1

why is perio so important inregards to other dental treatments?

Answer 1

in order to perform implant therapy, restorative/prosthodontic, orthodontic, or esthetic dentistry you need to have a healthy peridontium first.

Question 2

whats one of the most common recognized type of malpractice?

Answer 2

failure to diagnose periodontal disease.

Question 3

periodontal negligance rank is?

Answer 3

5th, this consists of dentists not taking radiographs or perio probing consistantly.

Question 4

be able to point out on a diagram the 4 basic principles of peridontium which are…..

Answer 4

gingiva, alveolar bone, PDL, cementum

Question 5

what type of tissue is gingiva?

Answer 5

dense fibrous tissue that overlies mucous membrane enveloping the alveolar process of upper and lower jaws and surrounding necks of teeth.

Question 6

gingiva consists of what 3 things?

Answer 6

marginal/free gingiva, attached gingiva, interdental gingiva

Question 7

what are some gingival structures you should be able to point out on a diagram?

Answer 7

gingival margin, free gingiva, gingival sulcus, attached gingiva, interdental gingiva & Col, Free gingival groove, mucogingival junction.

Question 8

marginal gingiva/free gingiva

Answer 8

unattached unkeratinized tissue that is the terminal edge or border of the gingiva surrounding the teeth in a collar fashion

Question 9

free gingival groove

Answer 9

separates the free and attached gingiva

Question 10

attached gingiva

Answer 10

attached and keratinized. Maxilla usually has larger zone.

Question 11

mucogingival junction

Answer 11

separates alveolar mucosa and attached gingiva

Question 12

width of attached gingiva

Answer 12

expands the mucogingival junction and the free gingival groove

Question 13

width of keratinized gingiva

Answer 13

distance between mucogingival junction and the free gingival margin

Question 14

alveolar mucosa

Answer 14

continuos with attached gingiva, unattached and nonkeratinized

Question 15

interdental gingiva

Answer 15

fill interdental embrasures. Col is not keratinized

Question 16

gingival sulcus

Answer 16

shallow crevice that surrounds the tooth, ideal conditions the depth would be 0mm. but clinically healty is 2-3mm

Question 17

PDL,

Answer 17

fibrous tissue between cementum and root. Hour glass shaped, thickness vaires from .15-.38mm. thinnest in mid root zone.

Question 18

PDL composition

Answer 18

fibers, cells, intercellular substances,. Principle fibers are most important and made of collagen,

Question 19

principle fibers of PDL are organized into what 6 groups

Answer 19

transeptal, alveolar cres, horizontal, oblique, apical, interradicular

Question 20

functions of PDL

Answer 20

resitance and transmission of occlusal forces to bone, formative and remodeling function, nutritional and sensory function.

Question 21

Resistance to occlusal forces

Answer 21

force causes principle fibers to transmit the force to the alveolar bone which causes temporary deformation of bone. When alveolar bone reaches limit it transmits to the basal bone below it.

Question 22

PDL cell functions

Answer 22

participate in cementum formation and resorption and tissue repair.

Question 23

PDL nutritional and sensory function

Answer 23

supplies nutrients to cementum, bone, and gingiva. Provides lymphatic drain. Transmit tactile, pressure, and pain sensations via trigeminal nerve

Question 24

cementum

Answer 24

calcified tissue which covers roots, Acellular( primary), cellular ( secondary),

Question 25

Acellular cementum

Answer 25

forms before cellular. covers cervical third/half of root. Sharpeys fibers make up most of structures of acellular cementum

Question 26

Cellular cementum

Answer 26

forms after teeth reach occlusal plane, conatins cementocytes. Sharpeys fibers occypy small portion.

Question 27

3 types of CEJ’s

Answer 27

cementum overlaps enamel (60-65%), edge to edge (30%), cementum and enamel dont meet (5-10%)

Question 28

alveolar process consists of…..

Answer 28

alveolar bone proper and supporting bone.

Question 29

allveolar bone proper location

Answer 29

lines tooth socket

Question 30

supporting bone location

Answer 30

includes buccal and palatal cortical plates and underlying cancelous bone

Question 31

alveolar crest is usually —— apical to the alvolar crest?

Answer 31

2-3mm.