1. consider
2. Types of Occlusal Forces
3. Factors Preventing Restoration Dislodgement
4. Factors Contributing to Structural Durability
5. Factors Related to Marginal Integrity
6. occlusal or forces along the path of insertion
7. tipping
8. twisting or rotational forces
9. Retention
10. Resistance
11. proper Taper of Convergence of Axial Wall
12. proper Surface Area or Axial Wall Height
13. proper Ration of Preparation diameter to Axial Wall Height
14. Circumferential Irregularities
15. Occlusal Integrity
16. Occluso-gingival length
17. proper Incisal/Occlusal Reduction
18. proper Axial Reduction
19. resist forces
20. prevent perforation
21. provide anatomy
22. determine termination of the restoration
23. locate the margins in self-cleansing areas
24. Margin Adaptation
25. Margin Geometry
26. fit
27. strength
28. location
29. Feather-Edge
30. Knife Edge/ Chisel Edge
31. Chamfer
32. Shoulder Margin
33. 120 degree Sloped Shoulder
34. Beveled Shoulder Margin