Preliminary development of photoelastic resin occlusal film
Ge, Q.-M.; Sun, J.; Zhang, F.-Q.
Shanghai Kou Qiang Yi Xue 19(6): 626-629
2010
ISSN/ISBN: 1006-7248 PMID: 21431264 Document Number: 645291
To develop an occlusal film that can be intuitively and easily used clinically to observe the stress distribution of occlusion, based on the photoelastic resin material properties. Using self-made silicone rubber vaginal mold, the epoxy resin occlusal films were poured into 2 different thickness and 4 different plasticizer ratio. The hardness and bitability were evaluated in 10 cases of natural dentition and 5 cases of complete denture dentition, while the bite blot was recorded using light bomb instrument at the same time. The data was analyzed and compared with T-Scan system. 2-50 occlusal film presented not only a right bite comfort, but also a clear response to occlusion blotting, which showed a comparable manifestation with T-Scan system. Compared with traditional inspection methods, occlusal photoelastic film can provide more intuitive occlusal stress distribution and benefit the diagnosis and efficacy evaluation of bite-related diseases. Supported by Research Fund of Science and Technology Commission of Shanghai Municipality (Grant No.08DZ2271100) and Shanghai Leading Academic Discipline Project (Grant No.T0202).