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operative midterm (lecture) > Dental Caries and Classification > Flashcards

Dental Caries and Classification Flashcards

1
Q

a multifacorial infectious disease that attacks teeth by certain bacteria if the conditions are permissible causing destruction(demineralization/dissolution) of the tooth

A

dental caries

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2
Q

very tiny caries not pass DEJ

A

incipient (reversible)

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3
Q

caries passes DEJ, just into dentin

A

small

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4
Q

caries gone 1/2 through dentin

A

moderate

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5
Q

caries lesion very close to pulp

A

extensive

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6
Q

which caries classifications do we prep and restore

A

small, moderate, extensive (cavitated)

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7
Q

on the occlusal surfaces of posterior teeth, buccal and lingual surfaces of molars, lingual surfaces of maxillary anterior teeth

A

pit and fissure caries

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8
Q

caries on the surfaces that are pit and fissure free (mesial and distal)

A

smooth surface caries

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9
Q

more in elderly, follows an advanced gingival recession

A

root surface caries

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10
Q

rate classification active; __-rapidly invading, softer lesions, multiple teeth

examples; nursing bottle, radiation, meth mouth

A

rampant(acute)

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11
Q

rate classification active; __-slow, long standing, dark in color and so there is a good chance of remineralization in early stages (reverse the demineralization process)

A

chronic

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12
Q

not showing any further progression, smooth and polished like surface

A

arrested caries

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13
Q

leaking margin, caries under a preexisting faulty restoration

A

recurrent/secondary caries

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14
Q

who came up with the classification of caries (class 1, class II, etc.)

A

GV black

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15
Q

pits and fissures of occusal surfaces of premolars and molars, buccal or lingual pits/fissures of the molars, lingual pit near the cingulum of the maxillary incisors

A

class 1

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16
Q

involving the proximal surfaces (mesial/distal) of premolars and molars (posterior teeth only)

A

classII

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17
Q

proximal (mesial/distal) surfaces of incisors and canines (anterior teeth)

A

class III

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18
Q

proximal surfaces of incisors and canines, but also will involve the incisal edge

A

class IV (4)

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19
Q

gingival third (the area near the gingiva) of the facial or lingual surfaces of any tooth

A

class V(5)

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20
Q

involve the incisal edges of anterior teeth and the cusp tips of posterior teeth, (rare)

A

class VI(6)

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21
Q

according to GV Black, the location of the lesion dictated the design of the

A

cavity preparation

*a class I lesion corresponds to a class I cavity prep and so on

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22
Q
  1. ) removal of dental caries
  2. )removal of weak tooth structure to provide well supported sound hard tissue
  3. )pulp protection (if healthy pulp, protect it)
A

fundamental concepts for all tooth preps

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23
Q

a mechanical alteration of a diseased or a defective part of the tooth to receive a restoration material to ultimately restore healthy state of the tooth, longevity and patient comfort

A

cavity prep

24
Q

healthy state is reestablishing

A

tooth is not diseased anymore

normal function and form

esthetically pleasing where indicated(anterior zone of the oral cavity)

25
Q

junction of two surfaces

A

line angle

26
Q

junction of 3 surfaces

A

point angle

27
Q

extend to the outer tooth surface

A

external wall

28
Q

do not extend to the outer tooth surface

A

internal wall

29
Q

__ are parallel to the long axis

A

axial wall

30
Q

right angle to long axis

A

perpendicular walls

31
Q

touching uncut tooth structure

A

gingival wall

32
Q

not touching uncut tooth structure

A

axial and pulpal wall

33
Q

narrowest portion of a cavity prep (betweeen 2 triangular ridges)

A

isthmus

34
Q

a portion of the cavity connecting an occlusal portion and a proximal portion together

A

class II

35
Q

__ design includes each marginal fossa and the developmental grooves around the marginal pits

A

dovetail

36
Q

junction between the external walls of the cavity prep and the uncut tooth surface

A

cavosurface margin

37
Q 
outline form
resistance form
retention form
convenience form
finishing
debridement
A

basic 6 principles of cavity preps

38
Q

+conservation of tooth structure
+location and the extent of the carious lesion
+position of pit and fissure dictate the outline

A

factors governing outline form

39
Q

two outline form approaches;
__1__; extensive tooth preparation, unnecessary loss of healthy tooth structure

2; preservation of the remaining tooth structure, minimal extension of the outline form

A

1= extension for prevention

2=conservative approach

40
Q

who to do with caries lesions on same tooth that are separated with less and more than 0.5mm of enamel

A

less than 0.5 make 1 prep

greater than 0.5mm save as much and make 2 preps

41
Q

design features of cavity prep to avoid fracture of tooth structure, allowing the remaining tooth structure and the restoration to withstand forces that are principally directed towards the long axis of the tooth

A

resistance form

42
Q
  1. removal of the undermined enamel
  2. flat pulpal fllor and cavity wall angulation
  3. cavity prep depth
  4. well defined rounded internal line angles
  5. type of restorative material
A

primary resistance

43
Q

resistance form __; cavosurface margin should not terminate on unsupported or undermined enamel to prevent fracture

A

removal of undermined surface enamel

44
Q

resistance form ___;cup shapred cavity, rotation of the restoration results in a wedging effect on the supporting dentin bridge
+box shaped: pulpal floor perpendicular to the long axis of the tooth

A

flat pulpal floor

45
Q

resistance form __, adequate depth to provide enough thickness of amalgam to prevent its fracture under load

A

cavity prep depth

46
Q

minimal amalgam thickness to withstand forces

A

1.5mm

47
Q

resistance form __, placing line angles to delineate the walls

A

well defined rounded internal line and point angles

48
Q

__ line angles are not recommended in any restoration because they act as stress concentration areas

A

sharp

49
Q

cavosurface margin has to establish a __butt-joint margin amalgam margin

A

90 degrees

50
Q

__has a low edge strength

A

amalgam

51
Q

design features of the cavity prep that prevent __of the restoration by lifting or tipping forces

A

dislodgement

52
Q

amalgam does not bond to tooth structure thus increasing the __ of the walls that contacts the amalgam will increase friction

A

surface area

53
Q

making opposing walls __or__toward the occlusal

A

parallel or slightly converging

54
Q

sufficient access to the cavity, to facilitate visibility and instrumentation of the cavity prep and the insertion of the restorative material

A

convenience form

55
Q

__ is important for complete removal of decay

A

visibility

56
Q

__ the cavorsurface margin (enamel margin) to prevent jagged or rough outline, to achieve the best marginal seal

A

finish

57
Q

this is the final step before cavity prerp receives the restoration, rinsing the cavity with air/water syringe and high suction evacuation, to removal smear layer and free cavity from moisture (blood and saliva)

A

debridment

operative midterm (lecture) (7 decks)

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