cavity preparation part 2

enumerate factors affecting the proximal cavity outline

enumerates reason for flaring the margins

in class II preparation the proximal surface is approached at ..... angle

IN PROXIMAL CAVITY PREPARATION OF POSTERIOR TEETH (CLASS II) the preparation must extend beyond the contact area

• true
• false

The junction between the occlusal cavity and proximal surface is a .......in case of missing contact

• Straight line
• Uniform curve
• Reverse curve
• none of the above

the most common proximal outline is

• Straight line
• Uniform curve
• Reverse curve
• none of the above

Uniform curve is done in case of .......... embrasure and ......... contact point

reverse curve is done in case of

• buccal wall of upper molars
• buccal wall of lower molars
• narrow embrasure and broad contact point
• all of the above

the main reasons for reverse curve is

class III is approached

• occlusaly
• labialy
• lingual
• none of the above