Assessment of Flexible and Conventional Resins as Denture Bases

Flexible and acrylic resins are used as denture bases.Acrylic resins derived from polymethyl methacrylate are the conventional approach.Flexible thermoplastic resins are the alternative, and of these, polyamides with low flexibility and ethylene propylene resins are often used in current practice.The biocompatibility, flexibility, non-allergenic properties, and ease of denture insertion all highlight the suitability of these materials.This study aims to evaluate the behavior of low flexibility polyamide, ethylene propylene resin, and polymethyl methacrylate resin, used as partial denture bases, by monitoring the specific parameters obtained.The evaluation of the behavior of the materials was carried out by clinical examination.Additionally, a questionnaire was used.The results with both flexible resins are almost similar and superior to conventional resins, in partially edentulous patients, in difficult clinical situations, on undercut prosthetic areas, and in extended edentulous, tilted teeth, or when the patient has a limited mouth opening.The prognosis over time with polyamides with low flexibility and ethylene propylene resins is more advantageous than with classic acrylic resins.