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Titanium copings veneered with Procera ceramics: a longitudinal clinical study
H Nilson1, B Bergman, C Bessing
1Department of Prosthetic Dentistry, Faculty of Odontology, University of Umeå, Sweden.
The International Journal of Prosthodontics
|March 1, 1994
Summary
Two titanium copings veneered with low-fusing ceramic fractured within 30 months. While margin integrity remained high, surface, color, and anatomic form showed declines in dental crown ratings.
Area of Science:
- Dental Materials Science
- Prosthodontics
- Biomaterials
Background:
- Titanium copings veneered with low-fusing ceramic have been utilized in dental restorations.
- Assessing the long-term clinical performance and durability of these restorations is crucial for patient outcomes.
Purpose of the Study:
- To evaluate the clinical performance and longevity of titanium copings veneered with low-fusing ceramic over a 26-30 month period.
Main Methods:
- Fabrication of 47 titanium copings veneered with low-fusing ceramic for 24 patients.
- Clinical examination of 44 crowns after 26-30 months, assessing ceramic fractures, surface and color, anatomic form, and margin integrity using California Dental Association criteria.
Main Results:
- Two crowns (4.3%) exhibited bulk ceramic fracture.
- Significant decline in California Dental Association ratings for "Surface and Color" from "Excellent" to "Acceptable".
- Minor shift in "Anatomic Form" ratings from "Excellent" to "Acceptable"; "Margin Integrity" remained satisfactory in all cases, with most rated "Excellent".
Conclusions:
- Titanium copings veneered with low-fusing ceramic demonstrate a risk of ceramic fracture and degradation in surface and color over a 2.5-year period.
- While margin integrity is generally well-maintained, aesthetic and structural aspects may decline, necessitating careful material selection and patient monitoring.