Abstract
Load-load line displacement diagrams and acoustic emission characteristics were measured in the transverse test of conventional and microfilled composite resins in order to develop a method for the evaluation of strength of dental restorative materials and the non-destructive inspection of restorations in oral cavity. Both conventional and microfilled composite resins exhibited burst type acoustic emission. Conventional composite resins generated the abrupt acoustic emission, but microfilled composite resins did not showed an appreciable increase in acoustic emission before fracture for a low acoustic emission activity.
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