Using resin composites 2

Question 1

What is the Cavity Preparation for a posterior Class I?

Answer 1

Cavity Preparation:

• Unnecessary to remove unaffected tooth tissue (i.e. no extra retention required)
• Unsupported enamel can be left if adequate access to caries has been gained
• Do not bevel enamel margins

Question 2

What is the Outline Form for Posterior Class II cavity?

Answer 2

Outline form:

• Access to caries only – no further retention required
• Lesions generally ‘saucer’ shaped
• Unsupported enamel can be left

•Contact area must be cleared gingivally!