fundamentals of cavity prep

Question 1

why should we apply the principles while doing cavity prep

Answer 1

without applying these principles there would be high possibility for restoration to fail

Question 2

define cavity prep

Answer 2

its the mechanical operation of the broken or carious tooth structure

Question 3

what is the reason to do cavity prep

Answer 3

would be fracture of tooth itself or carious region of tooth

Question 4

while doing cavity prep u should establish these 3 main objectives

Answer 4

1- esthetics
2- function
3-occlusion

Question 5

which one affects directly if it has a problem ?
A- function
B- occlusion

Answer 5

A- function ( occlusion wont directly see the effect its long term as the dr said)

Question 6

what is the primary goal of cavity prep regarding caries

Answer 6

to remove all carious tissue and protect dental pulp

Question 7

how should the margins of cavity prep be handled

Answer 7

the margins should be located as conservatively as possible to preserve healthy tooth structure

Question 8

why is it important for the cavity prep to resist occlusal and lateral forces

Answer 8

to prevent fracture of tooth and ensure the restoration is not displaced or fractured

Question 9

what should be restored through cavity prep besides the tooth structure

Answer 9

esthetics and function

Question 10

what is one of key aspects of diagnosis in cavity prep

Answer 10

comprehensive clinical examination and diagnostic aids ( xrays , transillumination)

Question 11

How does pulpal and periodontal status affect cavity preparation

Answer 11

-It informs decisions regarding the extent of decay removal and the approach to protect the pulp and surrounding tissues.

Question 12

Why is occlusal relationship important in cavity preparation

Answer 12

It affects the design and choice of material for the restoration, ensuring proper function and durability

Question 13

How does the relationship to other treatment plans influence cavity preparation

Answer 13

It must consider future treatments needed for missing teeth, which can affect the cavity design and restoration approach

Question 14

What esthetic considerations should be accounted for in cavity preparation

Answer 14

The appearance of the restoration and how it blends with the natural tooth structure

Question 14

Why is the size and position of the dental pulp a factor in cavity preparation

Answer 14

It determines how deep the cavity can be prepared and how to protect the pulp.

Question 15

What role do supporting tissues (gingival and periodontal) play in cavity preparation

Answer 15

Their health and position influence the design and access of the cavity preparation

Question 16

mention the operative factors that affect the cavity prep

Answer 16

1- knowledge
2- whether adequate isolation of operating site is maintained or not
3-skills and experience

Question 17

What patient factors should be considered in cavity preparation

Answer 17

1- esthetic concerns
2- patient age
3- level of caries risk

Question 18

what are the biological principles concerned with

Answer 18

health and integrity of the remaining sound tooth structure , protection of pulp and prevention of caries recurrence

Question 19

why protection of pulp

Answer 19

dental pulp is highly specialized n sensitive, so must be protected against irritation

Question 20

irritation could be

Answer 20

1- traumatic
2-thermal
3-chemical

Question 21

how should carious dentin close to pulp be managed during cavity prep

Answer 21

it should be removed with extreme care to avoid over prep and unnecessary deepening of cavity

Question 22

what can result from increasing the depth of cavity too much

Answer 22

it can lead to traumatic irritation of pulp

Question 23

what is recommended to avoid traumatic irritation when removing soft dentin at the bottom of deep cavity

Answer 23

use sharp excavators with gentle pressure and avoid excessive cutting of enamel

Question 24

how can adequate hand support help during cavity prep

Answer 24

prevents slipping of instrument

Question 25

factors contributing to thermal injury

Answer 25

use of old burs , dull burs , high pressure , insufficient air water coolant , continuous contact and incorrect speed range.

Question 26

How can heat generation be minimized during cavity preparation

Answer 26

Use sharp, small, new burs, correct speed ranges, minimal pressure, and copious amounts of coolant.

Question 27

What should be avoided to prevent chemical irritation during cavity preparation

Answer 27

Using chemical irritants near the pulp and disinfecting cavities with chlorohexidine, which can inhibit dentin degradation in adhesive restorations.

Question 28

Where might caries recur after restoration

Answer 28

At the margins of any restoration, and may spread unnoticed until the damage becomes too severe

Question 29

How should the Cavo surface angle be managed to prevent caries recurrence

Answer 29

the angle should be compatible with the physical characteristics of the restorative material used

Question 30

What is essential for preventing caries recurrence

Answer 30

Removal of all carious enamel and dentin, and all undermined enamel without dentin support. Undermined enamel may be preserved for esthetic reasons if reinforced by an adhesive restoration

Question 31

What is crucial for preventing bacterial irritation to the pulp during restorative procedures

Answer 31

Cleanliness and asepsis.

Question 32

How can aseptic procedures be achieved

Answer 32

Use clean and sterile instruments, isolate the operative field with a rubber dam, and ensure clean and dry hands.

Question 33

What corrective procedures might be necessary to protect surrounding soft tissues during restoration

Answer 33

Gingivectomy and crown lengthening to ensure proper placement of the restoration.

Question 34

What are the key aspects of protecting surrounding soft tissue during restoration

Answer 34

Proper contact, contour, occlusal anatomy, and marginal adaptation to prevent mechanical injury, food impaction, and plaque accumulation.

Question 35

What do mechanical principles in cavity preparation focus on

Answer 35

Preservation of the structural integrity of both the tooth and the restoration.

Question 36

How is structural integrity achieved in cavity preparation

Answer 36

Through correct cavity design that reduces destructive stress and maintains it within the tolerance of tooth structure and restoration

Question 37

mechanical principles

Answer 37

1- correct resistance against fracture of tooth or restoration 2-adequate retention against the dislodgment of restoration from its corresponding prep 3-conservation of tooth by avoiding unnecessary cutting and eliminating weak, undermined enamel to prevent fracture under functional forces.