Abstract
Objectives: This study aims to determine whether bruxism and the use of occlusal splints affect the survival of porcelain laminate veneers in patients treated with this technique. Material and Methods: Restorations were made in 70 patients, including 30 patients with some type of parafunctional habit. A total of 323 veneers were placed, 170 in patients with bruxism activity, and the remaining 153 in patients without it. A clinical examination determined the presence or absence of ceramic failure (cracks, fractures and debonding) of the restorations; these incidents were analyzed for association with bruxism and the use of splints. Results: Analysis of the ceramic failures showed that of the 13 fractures and 29 debonding that were present in our study, 8 fractures and 22 debonding were related to the presence of bruxism. Conclusions: Porcelain laminate veneers are a predictable treatment option that provides excellent results, recognizing a higher risk of failure in patients with bruxism activity. The use of occlusal splints reduces the risk of fractures. Key words:Veneer, fracture, debonding, bruxism, occlusal splint.
Highlights
The veneer restoration technique was developed in the mid nineteen-eighties in the United States, and later spread throughout the world
Studies carried out by various authors (1013) show that these splints decrease bruxism activity generated during periods of stress; it is advisable to use these devices in patients with suspected bruxism following prosthodontic treatment with either full coverage crowns or with laminate veneers
Material and Methods Three hundred twenty-three porcelain laminate veneers were placed during a period of eight years, all fabricated with IPS-Empress ceramic (Ivoclar®, Schaan, Liechtenstein) in order to standardize the results and eliminate any variables that could arise from the use of different ceramics
Summary
The veneer restoration technique was developed in the mid nineteen-eighties in the United States, and later spread throughout the world Bonding these fragile porcelain laminae securely to natural teeth has been a challenge for our profession. We analyzed whether the presence of bruxims activity and the use of occlusal splints in our patients, affected the medium and long term survival of these treatments To this end we developed a data collection methodology to provide reliable results able to withstand the usual statistical tests for these sample types and to be compared with results of other authors
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