Filling cavities or restoring teeth

摘要: Teeth seldom fracture under normal functional loading. This indicates that the natural tooth design is optimized for distribution of regular masticatory forces by means its properties and structure. When a restored with an intracoronal restoration, however, incidence increases. Since remaining tissues do not change, restorative actions apparently alter original stress distributions. In this study, effect different restoration types (unbonded amalgam bonded composite restorations) were compared conditions intact tooth, using finite element analysis. It was shown unbonded did restore but led to much higher stresses in buccal lingual enamel tensile cavity floor. The thus filled tooth. contrast, pattern if there no polymerization shrinkage. Polymerization shrinkage causes residual dentin around enamel. Residual are momentary compensated compressive components during occlusal concluded bonding elimination prerequisites restoring integrity.