Randomized clinical evaluation of a light-cured base material for complete dentures.

OBJECTIVES: The purpose of this study was to compare plaque adhesion, tissue reaction, and technical complications for complete dentures based on visible light-cured resin (VLCR) or on conventional poly(methyl methacrylate) (PMMA). MATERIALS AND METHODS: A stratified randomized cohort study was designed with 52 patients treated with a complete denture in the maxilla (n = 28), the mandible (n = 2), or both (n = 22). Seventy-four dentures were manufactured, 38 of PMMA and 36 of VLCR. Investigators and patients were unaware of the nature of the denture base material. Plaque adhesion, tissue reaction, and technical complications were investigated 4 weeks after denture insertion (baseline). Recall investigations were performed after 6, 12, and 24 months. RESULTS: After 6, 12, and 24 months, plaque adhesion was significantly higher for VLCR dentures than for PMMA dentures. Tissue reaction was comparable for both groups, however. After 6, 12, and 24 months, need for repair was significantly greater for VLCR prostheses. The mean number of additional aftercare sessions per patient after 24 months was 50 % higher for VLCR than for PMMA. CONCLUSIONS: Good oral hygiene must be established by patients treated with VLCR dentures, to remove biofilm from these dentures. Increased aftercare must also be taken into account when this material is used. CLINICAL RELEVANCE: VLCR might be a viable alternative to PMMA for patients with allergic reactions to residual monomer or benzoyl peroxide.