STATEMENT OF PROBLEM: Hypoallergenic denture base materials are commonly used for patients with allergic reactions to polymethyl methacrylate (PMMA) denture base materials. The goal for repaired fractured dentures fabricated from hypoallergenic denture base materials is to restore the dentures to their original strength. PURPOSE: The purpose of this in vitro study was to investigate the flexural properties of 7 hypoallergenic denture base materials after repair compared with a conventional PMMA-based heat-polymerizing resin. MATERIAL AND METHODS: Specimens (n=5) of the following hypoallergenic denture base materials with differing polymerization modes: Eclipse base material, Luxene, Microbase, Polyan, Puran HC, Alldent Sinomer, and The.r.mo.Free, were repaired with Versyo.com as well as the respective repair systems for 4 of the tested materials. A heat-polymerized acrylic resin (Paladon 65) was repaired using autopolymerizing acrylic resin (Palapress), which served as the control. Flexural strengths (MPa) and flexural moduli (MPa) were assessed before and after repair of each material, according to ISO 1567. The data were analyzed with repeated measures 2-way and 3-way ANOVA, 1-way ANOVA, and Bonferroni-Dunn's multiple comparisons post hoc analysis, or with the paired t test (alpha=.05). RESULTS: Flexural strengths and flexural moduli of both repair methods (repair according to manufacturer's instructions or repair with Versyo.com) for all materials were significantly lower than those of the intact specimens (P
