FUNCTIONAL CUSP BEVEL

•         An integral part of occlusal reduction is the functional cusp bevel. 

•         A wide bevel placed on the functional cusp provides space for an adequate bulk of metal in an area of     heavy occlusal contact.

Functional Cusp Bevel  

     Lack of functional cusp bevel may produce several problems
1 : Can cause a thin area or perforation.
2 : May result in over contouring and poor occlusion.
3 : Over. inclination of the buccal surface will destroy excessive tooth structure reducing retention.


AXIAL REDUCTION

•         Plays an important role in securing space for an adequate thickness of the restorative material. 
•         Inadequate axial reduction will have thin walls subject to distortion or result in over contouring the axial    surface which could lead to periodontal problems.