Question 67 · LDEK · Crowns
Crown retention depends on:
1) convergence angle of the axial walls of the prepared tooth;
2) tooth width to height ratio;
3) tooth height;
4) complete adhesion surface of the crown;
5) presence of undercuts;
6) adhesion of cement;
7) surface roughness of the tooth;
8) anatomical shape of the occlusal surface.
The correct answer is:
2) tooth width to height ratio;
3) tooth height;
4) complete adhesion surface of the crown;
5) presence of undercuts;
6) adhesion of cement;
7) surface roughness of the tooth;
8) anatomical shape of the occlusal surface.
The correct answer is:
- A. 1,2,3,4,5,7.
- B. 1,3,4,5,6,7.
- C. 1,3,4,6,7.
- D. 1,4,7.
- E. all the above.
Hint
Separate factors that resist crown removal along the path of insertion from features that prevent seating or concern occlusal anatomy.
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