Costley Module 11 ch 17 Flashcards Preview

Dental Hygiene 1 > Costley Module 11 ch 17 > Flashcards

Flashcards in Costley Module 11 ch 17 Deck (69):
1

Amelogenesis

Production and development of enamel

2

Avulsion

The tearing away or forcible separation of a structure

3

Bruxism

oral habit

4

A carious lesion that has become stationary and does not show a tendency to progress further is termed

Arrested Caries

5

Primary caries occurs on a surface ______

not previously affected

6

Recurrent Caries occurs?

On a surface adjacent to a restoration

7

Under development of a tissue or organ is termed

Hypoplasia

8

Idiopathic

Condition of unknown cause

9

An early lesion can be referred to as _____ caries

Incipient (beginning)

10

Neutral P.H.

7.0

11

The PH at which demineralization occurs is termed _________
what is the value for enamel?
what is the value for cementum?

Critical PH
4.5-5.5
6.0-6.7

12

Mixed Dentition occurs between ages __ and ____

6
12

13

Roots are normally completely formed how long after eruption?

3 yrs.

14

A Hereditary disorder of the enamel is_____ the enamel may have a _____color

Amelogenesis Imperfecta
Brown

15

Systemic causes for enamel malformation are also called ______ or "--------"

Environmental
Chronologic Hypoplasia

16

A Systemic Enamel Malformation that is "single narrow zone" last a _____ period of time

short

17

The teeth most frequently affected by Systemic Enamel Malformations are?

1st Molars
Incisors
Canines

18

What STD can cause enamel malformations

Syphilis

19

Attrition

Wearing away of the tooth due to occlsion

20

Attrition can be found on what surfaces of the teeth

Occlusal
Incisal
Proximal

21

Predisposing factors to Bruxism include

Tension
Occlusal Interferences
Psychological Problems

22

Initial VS Advanced Attrition Signs

slight flattening - on cusp tip/ridge
Gradual reduction in cusp height: flattening of incisal or occlusal plane

23

Erosion is the loss of tooth structure by what process?

Chemical

24

Erosion is typically seen on what surfaces of the teeth

Lingual or Facial

25

______ _______ (Erosion) affects the lingual surfaces of anterior teeth

Chronic Vomiting

26

What are some examples of Extrinsic sources of enamel erosion

Lemons
Carbonated Beverages
Diet
Atmospheric Acids

27

The appearance of enamel erosion can vary from shallow _______ depressions to deep ______ grooves.

saucer-like
wedge-shaped

28

Abrasion is caused by

mechanical wearing by forces other than chewing.

29

Enamel Abrasion typically occurs at what surfaces

Exposed root surfaces
Incisal edge or occlusal surface

30

Enamel Abrasion can be caused by vigorous ________ and _______ causes

horizontal brushing
occupational (holding things between teeth)

31

Radiographic signs of trauma include widened __________ Radiolucent _______ Radiopaque area where fracture segments _________ and tooth ______

PDL space
fracture line
overlap
displacement

32

The WHO definition of caries?

localized, posteruptive, pathologic process of external origin involving softening of the hard tooth tissue and proceeding to the formation of a cavity.

33

The requirements for the development of a carious lesion are?

Microorganisms
Carbohydrate
Susceptible Tooth

34

What bacteria is found in the initiation of caries?

Mutans Streptococcus

35

What bacteria is found in the progression of caries?

Lactobacillus

36

The standard method for classifying dental caries was developed by

Dr. G.V. Black

37

Cavities in pits or fissures are a Class

1

38

Cavities on incisal edges of anterior teeth and cusp tips of posterior teeth are Class

6

39

Cavities in proximal surfaces of incisors and canines (don't include incisal edge) are Class

3

40

Cavities in proximal surfaces of incisors or canines that involve incisal edge are Class

4

41

Cavities in proximal surfaces of premolars and molars are Class

2

42

Cavities in the cervical 1/3 of facial or lingual surfaces are Class

5

43

An Incipient lesion isn't ______ and first clinical evidence is a ______

visible
white area on enamel

44

Low concentrations of ______ applied frequently during the initial phase of caries can help with demineralization

fluoride

45

The progression of carious lesions follows the general direction of ______

enamel rods

46

____ and ______ caries occurs where three or more lobes of development join imperfectly, or at endings of grooves of teeth

Pit and Fissure

47

_______ caries develops on proximal tooth surfaces where biofilm removal is protected

Smooth Surface

48

What teeth are most often affected in early childhood caries

MX anterior teeth and primary molars

49

Children need to be seen for an exam no longer than ______ mo after eruption of 1st tooth

6

50

What is necessary for root caries to happen

Gingival Recession

51

Caries does not form in the root surface while ________

PD fibers are attached

52

Dental caries starts near the ______

CEJ

53

Root caries occurs in a mildly ___ environment.

acidic

54

Root caries lesions are describes as __, ___, or ______

soft, leathery, hard
soft, leathery (Active Lesions)
Hard ( Arrested lesions)

55

Root caries increases ______ to coalesce with other small lesions

laterally

56

The 2 basic types of pulp testing are

thermal
electric

57

Intrinsic discoloration, fractures, large carious lesions, and fistulas are examples of ______ observations of ______

clinical
loss of vitality

58

Apical radiolucency, bone loss, and fractured roots are example of _______ observations of _____

radiographic
loss of vitality

59

The vitality of the pulp depends on ______ not ______

blood supply
nerve supply

60

An electric tester reveals only whether a pulp is _______ or _______

vital
non-vital

61

No response to an electric pulp test means?

Necrotic Pulp

62

Lingering pain after removal of electrical stimulus to pulp means?

Irreversible pulpitis

63

Pain subsides promptly after electrical pulp stimulus means?

reversible pulpitis

64

Reasons for False-Negative Pulp Test Responses

Took pain meds (alcohol, narcotics)
Recently traumatized tooth
narrow calcified root canal
newly erupted tooth

65

Primary dentition formation begins _____

in utero

66

Mineralization of the permanent teeth starts at ___ and continues into ____

birth
adolescence

67

What are the two methods of classifying cavities

G.V. Blacks
Nomenclature by Surfaces

68

Phase 1 in the formation of a carious lesion is?

Incipient Lesion development

69

Phase 2 in the formation of a carious lesion is?

Untreated Incipient Lesion development