Impact of nylon versus heat cure acrylic resin on microbial adhesion of closed hollowed obturators

Abstract

Purpose This study aimed to evaluate the effect of nylon versus heat-cure acrylic resin on microbial adhesion of a closed hollowed obturator. Patients and methods Twelve male patients with a unilaterally acquired maxillary defect (Aramany Class IV) were chosen from the outpatient clinic of the Prosthodontics Department at the Faculty of Dentistry, Sinai University (Kantara branch). These patients were divided into two equal groups: group I was provided with an obturator made of heat-cured acrylic resin (P.M.M.A.-Vertex), while group II received an obturator made of thermopress resin (nylon breflex, 2nd edition). Each group underwent microbial evaluation through follow-up recall visits at 2 and 4 weeks. The results were recorded, tabulated, and subjected to statistical analysis. Results There is a significant difference between group I and group II. The conventional acrylic resin group showed higher bacterial adhesion than the nylon. Conclusion Within the limitations of the study, a closed hollow bulb constructed with thermopress resin exhibits reduced bacterial colonization when compared to heat-cured acrylic resin.