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The objective of this study was to examine denture repair cases in terms of the design, material, usage and possible causes of defects. In this report, the relation between 237 denture base fracture cases treated at the student clinic in Osaka University from 1988 to 1990 and their fracture location were classified and analyzed.Following results were obtained:1. The number of denture base fractures in overall denture repair cases was decreased compared to our previous survey in 1985. One of the reason for the decrease might be the application of reinforcement method using adhesive resin and wrought clasp wire.2. The most frequent fracture locations of resin denture base were found in the midline area in lower complete dentures, areas adjacent to abutment teeth in overdentures, areas adjacent clasps and other metal components of partial dentures.3. Fractures in dentures with reinforcements were found in early stage after insertion. This result suggests that the adequate thickness of denture bases should be applied even with reinforcements to avoid fractures.

Study on Denture Repair Cases. Part 1. Suvey on Resin Denture Base Fracutres.