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Preparation modifications for damaged vital posterior teeth
Dental Clinics of North America
|April 1, 1985
Summary
Restoring severely damaged teeth with cast restorations involves modifying preparations to utilize existing tooth structure. For extensive damage, pin-retained cores are essential for rebuilding the tooth to support the final restoration.
Area of Science:
- Restorative Dentistry
- Dental Materials Science
Background:
- Severe tooth damage compromises the integrity of cast restorations.
- Traditional preparation methods may be insufficient for extensive coronal destruction.
Purpose of the Study:
- To outline modified preparation techniques for cast restorations on severely damaged teeth.
- To define criteria for using auxiliary retention features and core build-ups.
Main Methods:
- Utilizing preexisting preparation features (boxes, isthmuses).
- Incorporating new features like boxes, grooves, and pin holes for retention and resistance.
- Employing pin-retained amalgam or composite resin cores when coronal destruction exceeds 50%.
Main Results:
- Modified preparations enhance retention and resistance for cast restorations.
- Pin-retained cores effectively rebuild teeth with significant coronal structure loss.
- Successful preservation is achievable even with extensive tooth damage.
Conclusions:
- Strategic modification of tooth preparations is crucial for successful cast restorations.
- Auxiliary retention and resistance features are vital for severely compromised teeth.
- Pin-retained cores provide a reliable foundation for cast restorations when tooth structure is limited.