Module 20 ch. 21/44 Flashcards Preview

Dental Hygiene 1 > Module 20 ch. 21/44 > Flashcards

Flashcards in Module 20 ch. 21/44 Deck (50)
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1

Discolorations of teeth happen in what 3 ways

adheres to the surfaces
is in calculus/biofilm
incorporated in tooth/restorative structure

2

Extrinsic Stain occur on the _____ surface and ___ be removed.

external
may

3

Intrinsic stains occur ______ substance and _____ be removed.

inside tooth
cannot

4

What stains develop from sources outside the tooth.

Exogenous

5

Endogenous stains develop _______ the tooth and are always the ______ type

within
intrinsic

6

Yellow stain is associated with?

biofilm

7

_____ stain has demineralization underneath it and _____ be scaled

Green
shouldn't

8

Green stain is mostly found on what surfaces

facial cervical 1/3 of MX anterior tooth

9

Green stain results from oral ____, ____bacteria, and gingival _____

uncleanliness
chromogenic
hemorrhage

10

What stain is highly retentive and forms along the gingival 1/3

Black-Line

11

Black Line Stain follows contour of __ about ___ above the crest

gingiva
1mm

12

Black-Line stain is most frequently on what surfaces

lingual/proximal of maxillary posterior

13

Black Line stain is more commonly found in _____

females

14

What stain appears light brown to dark leathery.

Tobacco stain

15

A ____ sometimes __ stain forms on teeth in pellicle after repeated use of stannous fluoride

light brown
yellowish

16

What chemotherapeutics can cause brown stain

Chlorhexidine
Alexidine

17

What causes a dark mahogany almost black stain and is common in eastern countries

Betel Leaf

18

What type of stains may be related to the period of tooth development.

Endogenous Intrinsic

19

What stain is caused by an antibiotic and can be absorbed by the bones and teeth and can be transferred through the placenta.

Tetracycline

20

What color is tetracycline stain

light green to dark yellow
gray-brown

21

Color of tetracycline stain depends on?

dosage
length of time used
type of tetracycline

22

Defective tooth development may result from ____ abnormality or ______ influences

genetic
environment

23

What hereditary disease is seen when the teeth appear translucent or opalescent

Dentinogenesis imperfecta

24

What hereditary disease is seen when the enamel is partially or completely missing and teeth are yellowish-brown to gray-brown

Amerlogenesis imperfecta

25

_____ is when teeth erupt with white spots or with pits that can discolor

Enamel Hypoplasia

26

What type of stains are inside the tooth but come from an outside source

Exogenous Intrinsic

27

What types of exogenous stains can become Intrinsic

Tobacco
Green

28

Polishing procedures can interrupt enamel _____

remineralization

29

Can you use polishing agents on restorative materials?

NO

30

What are the rules for using polishing agents

Light Pressure
Moist Agent