principles of cavity preparation

Question 1

what are the 5 principles of cavity prep?

Answer 1

Outline form

Resistance form ( withstand any occlusal stress)

Retention form (resist displacement of the final restoration, helps retain the restoration securely)

Management of remaining caries

Enamel margin finishing

Question 2

what are the methods of cavity preparation?

Answer 2

After gaining access

Clear ADJ – progressively 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