principles of cavity preparation

Question 1

what are 4 reasons for restoring a tooth?

Answer 1

Remove diseased dental tissue
Relieve pain
tooth function
integrity of tooth
appearance/aesthetics
Remove plaque stagnation areas
Assist in maintaining a healthy periodontal condition

Question 2

what is the high speed used for?

Answer 2

to remove enamel and dentine and existing restorations
not used to remove caries and feel is lost

Question 3

what is the slow speed used for?

Answer 3

Used to remove soft caries, polishing and finishing

Question 4

what does dental dam help with?

Answer 4

tooth isolation
moisture control
Dental dam reduces the risk of lost burs and trauma to the soft tissues

Question 5

what are the 5 stages/ principles of cavity preparation?

Answer 5

1. Outline form
2. Resistance form ( occlusal forces)
3. Retention ( hold the filling)
4. Management of remaining caries
5. Enamel margin finishing

Question 6

what are the methods of cavity preparation?

Answer 6

gaining access

Clear ADJ – remove peripheral caries in dentine from ADJ first

Remove any (infected dentine) carious dentine over the pulp – final stage

Any residual caries is removed with a slowly rotating large round bur in an slow handpiece or with an excavator, affected dentine may be visible and detectable