A Comparative Assessment of Stress Distribution and Fracture Resistance of Porcelain Laminates Depending on Their Design Characteristics  An In Vitro study with 3�D Finite Element Analysis

Dr.Darshan M.Dakshindas; Dr.M.M.Warhadpande; Dr.G.K.Meshram

Volume : VI, Issue : IX, September - 2016

A Comparative Assessment of Stress Distribution and Fracture Resistance of Porcelain Laminates Depending on Their Design Characteristics An In Vitro study with 3�D Finite Element Analysis

Dr. Darshan M. Dakshindas, Dr. M. M. Warhadpande, Dr. G. K. Meshram

Abstract :

There is a growing demand of the patients for good esthetic and the use of ceramic laminates has become a reliable and successful technique for restoring discolored, worn, malformed or fractured teeth. Preparation design is one of the most important variables affecting the final success of ceramic laminates. Two designs most commonly used are: the so–called ‘Window–preparation’ (limited to buccal tooth surface) and ‘incisal–overlap preparation’ (preparation extending to the lingual surface). These preparations may influence the pattern of stress distribution within the laminate and the tooth itself. To study this stress analysis of dental structures, the latest approach is the ‘Finite Element Analysis (FEA). A study was undertaken to evaluate fracture resistance of the two designs by an in–vitro test and further validating the results of stress distribution in porcelain laminates using a 3–D FEA with the results from the in–vitro test.