title: Development and evaluation of radiopaque light cure composite.
abstract: After the development of a two-paste chemical cure composite, evaluation of its physicochemical properties, toxicological evaluation and in-vivo experiments in dogs teeth with histopathological study of dental tissues, a clinical trial was carried out and commercial production recommended. As the shelf life of the material was not enough, a light cure composite was developed, its material characteristics, toxiclological study, in-vivo experiments in dogs with histopathological evaluation and clinical trials carried out. However, the material was radiolucent, and could not be seen in an x-ray and differentiated from a cavity after filling was done. This led to the development of radiopaque light cure composite. Compressive strength, diametral strength, and microhardness were tested with 200-250 phr range of incorporated radiopaque glass particle filler of the size 0.7 to 1.0 micron this improved the properties when compared to conventional composites. The composite was non-toxic and suitable for animal studies. In vivo studies are underway in dogs with histopathological studied of the pulp and dentin. The material awaits clinical trials prior to commercial production.
authors.affiliation: Department of Orthodontics and Dento facial Orthopedics, College of Dental Surgery, Manipal 576119, Karnataka, India. info@mahe.ernet.in
authors.forename: A
authors.initials: A
authors.lastname: Valiathan
authors.forename: V K
authors.initials: VK
authors.lastname: Krishnan
authors.forename: M
authors.initials: M
authors.lastname: Mohanty
authors.forename: K S
authors.initials: KS
authors.lastname: Bhat
mesh_terms: D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry / Q000633:toxicity; D004285:Dogs; D006244:Hardness; D008027:Light; D013718:Tensile Strength
chemical_list: D017438:Bisphenol A-Glycidyl Methacrylate