The occlusal reduction for an all metal veneer crown should:
- A. Be as flat as possible to enable an easy fabrication of occlusion anatomy.
- B. Follow the occlusal morphology with a clearance rating from 1 to 1.5 mm with the opposing dentition.
- C. Follow the occlusal morphology with a clearance of no more than 0.5 mm with the opposing dentition.
- D. Be the last step in the tooth preparation.
The ideal occlusal reduction for an all-metal veneer crown is: C. Follow the occlusal morphology with a clearance of no more than 0.5 mm with the opposing dentition.
Here's why the other options are not optimal:
A. Be as flat as possible:
This would compromise the natural anatomy and function of the teeth, leading to problems like bite collapse and occlusal instability.
B. Follow the occlusal morphology with a clearance rating from 1 to 1.5 mm:
While some sources suggest an acceptable range of 1-1.5mm, a clearance of 0.5mm is generally considered ideal for optimal function and esthetics. A 1-1.5mm clearance might lead to excessive occlusal bulk and potential interference with the opposing bite.
D. Be the last step in tooth preparation:
While it's true that occlusal reduction is one of the final steps in crown preparation, the sequence can vary depending on the specific clinical situation and dentist's preferences.
Therefore, following the natural occlusal contours with a minimal clearance of 0.5mm from the opposing teeth provides the best balance of achieving proper function, esthetics, and crown strength for an all-metal veneer crown.
Remember, this is a general guideline, and the specific amount of reduction may vary depending on individual factors like tooth size, crown material, and existing occlusion. Always consult with your dentist for the most appropriate approach for your specific case.
