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Five-year clinical study of u.v.-polymerized posterior composites
A D Wilder1, S C Bayne, K N May
1Department of Operative Dentistry, School of Dentistry, University of North Carolina, Chapel Hill 27599-7450.
Journal of Dentistry
|August 1, 1991
Summary
Four ultraviolet-cured composite materials showed comparable wear rates to conventional controls over five years. Clinical evaluation revealed no significant differences in wear among these light-cured dental restorative materials.
Area of Science:
- Dental Materials Science
- Restorative Dentistry
- Polymer Science
Background:
- Ultraviolet (UV)-cured composites represent an advancement in dental restorative materials.
- Clinical long-term data on the wear performance of UV-cured composites compared to conventional materials is limited.
Purpose of the Study:
- To clinically evaluate the wear characteristics of four UV-polymerized composite materials.
- To compare the wear of UV-cured composites against self-cured and visible light-cured controls over a five-year period.
Main Methods:
- Four UV-polymerized composites were placed in Class I and II cavities in permanent teeth.
- Restorations were assessed annually for five years using USPHS criteria (direct evaluation).
- Wear was also evaluated indirectly at years 3, 4, and 5 using the Leinfelder method.
Main Results:
- USPHS wear measurements initially suggested increasing wear, likely due to scale sensitivity.
- Leinfelder method indicated gradually decreasing wear rates over time.
- No statistically significant differences in wear were found among the four UV-cured materials.
- No significant wear differences were observed between UV-cured materials and control groups (self-cured, visible light-cured).
Conclusions:
- UV-polymerized composite materials demonstrate comparable wear performance to conventional light-cured and self-cured dental composites.
- The choice of UV-cured composite does not significantly impact wear outcomes compared to traditional materials over five years.