principles of cavity preparation

Question 1

is a defect in the hard tooth structure as a result of an insult

Answer 1

cavity

Question 2

what is a cavity?

Answer 2

is a defect in the hard tooth structure as a result of an insult

Question 3

is the result of a specific operative procedures that have removed the defect and shaped the tooth to receive and retain the restorative material

Answer 3

cavity preparation

Question 4

what is cavity preparation?

Answer 4

is the result of specific operative procedures that have removed the defect and shaped the tooth to receive and retain the restorative material

Question 5

what is a restorative material?

Answer 5

is a specially fabricated material designed for use as dental restoration

Question 6

what are dental restorations?

Answer 6

they are special material that your dentist places in or on your teeth to repair tooth decay (cavities) or defects on the tooth surfaces

Question 7

what class of caries?

Answer 7

class 1

Question 8

what class of caries?

Answer 8

class 1

Question 9

what class of caries?

Answer 9

class 2

Question 10

what class of caries?

Answer 10

class 2

Question 11

what class of caries?

Answer 11

class 3

Question 12

what class of caries?

Answer 12

class 4

Question 13

what class of caries?

Answer 13

class 4

Question 14

what class of caries?

Answer 14

class 5

Question 15

what class of caries?

Answer 15

class 6

Question 16

what class of caries?

Answer 16

class 6

Question 17

How we classify cavities?

Answer 17

1. by complexity
2. by surfaces

Question 18

How we classify cavities by complexity?

Answer 18

1. simple
2. compound
3. complex

Question 19

How we classify cavities by surfaces?

Answer 19

1. one
2. two surfaces
3. three surfaces

Question 20

a tooth preparation involving only one tooth surface

Answer 20

simple cavity

Question 21

what is an example of simple cavity?

Answer 21

occlusal preparation

Question 22

a tooth preparation involving two surfaces is

Answer 22

compound tooth preparation

Question 23

what is an example of compound tooth preparation?

Answer 23

messy-occlusal (MO) preparation

Question 24

a tooth preparation involving more than two surfaces?

Answer 24

complex tooth preparation

Question 25

what is an example of complex tooth preparation?

Answer 25

mesio-occlusal-distal preparation

Question 26

how we classify cavities by surfaces?

Answer 26

1. one surface 2. two surfaces 3. three surfaces

Question 27

messy-occluso-distal (MOD) cavity is an example of what?

Answer 27

three surface cavity

Question 28

messy-occlusal cavity is an example of what?

Answer 28

two surfaces cavity

Question 29

prepared cavities or restorations take the name of that surface e.g. a cavity located on the occlusal surface is called an occlusal (O) cavity

Answer 29

one surface

Question 30

is the enclosing Side of a prepared cavity that takes the name of the adjacent surface of the tooth

Answer 30

wall

Question 31

the simple class 1 has how many walls and floors?

Answer 31

the simple class 1 has 4 vertical walls and a horizontal wall (floor)

Question 32

name the walls of the prepared class 1 occlusal cavity?

Answer 32

1. Distal wall 2. Buccal wall 3. Lingual wall 4. Medial wall 5. Pulpal wall

Question 33

what are components of prepared cavities?

Answer 33

1. external wall a. facial b. distal c. gingival d. lingual 2. Internal walls: a. plupal b. axial

Question 34

formed when two walls of prepared cavity meet? and give example

Answer 34

line angle e.g messy-pulp line angle

Question 35

a corner formed by the junction of three walls of a prepared cavity and give example

Answer 35

point angle e.g. disto-fascio-pulpal point angle

Question 36

the line or angle formed by the junction of a cavity wall with the unprepared surface of the tooth. It encloses the entire outline of the prepared cavity

Answer 36

cavosurface (cavosurface margin)

Question 37

what is the angle of cavosurface margin?

Answer 37

the cavosurface margin should be a right angle (a butt joint) with amalgam note: other material may require the placement of bevels

Question 38

what is the basic principles of planning operative procedures?

Answer 38

1. conservation of tooth structure 2. Esthetics 3. Preservation of the pulp 4. extension for preparation of recurrent caries 5. other factors

Question 39

what are the other factors that u must keep in mind while planning for operative procedures?

Answer 39

1. Age 2. Caries activity level 3. periodontal condition 4. occlusion 5. medical history

Question 40

how we make sure of esthetics while planning operative procedures?

Answer 40

1. conservative cavity preparation 2. the choice of restorative material

Question 41

how we preserve the pulp?

Answer 41

1. conservative cavity preparation 2. extent of caries 3. the choice of the instruments and their operating characteristics during cavity preparation ( heat generation and vibration) 4. the choice of medicaments for preparation 5. the choice of restorative material is important, since materials differ in their effect on the pulp due to chemical composition, degree of thermal conductivity and resistance to marginal leakage