A COMPARATIVE STUDY OF PLAQUE ACCUMULATION ON TWO T'YPES OF DENTURE BASE RESINS

Abstract

Twenty completely edentulous patients shared in this study and were divided into two groups, group I received dentures fabricated from conventional heat cured acrylic resin while group II received dentures fabricated from high impact heat cured acrylic resin.

Plaster occlusal index was made for each fmished maxillary denture, then any necessary . adjustment was carried out. At time of denture insertion, swabs were taken from the palatal mucosa of the patients and plated on sabouraud's agar plate then incubated at 37°C for three days to detect he presence of any candida!colonies and exclude the carrier patients. Dentures were delivered to the patients and were instructed to come back after the following follow up periods, one week, three weeks and eight weeks and never wash the denture or use any disinfectant. In each follow up visit the upper denture was stained with plaque detector and photographed using medical-Kodak camera under standardized conditions. The dentures were then washed and polished before being given again to the patients. The obtained photograph were scanned using computer scanner and the percentage of plaque stained areas in relation to the total fitting surface area were measured using special soft ware program. At the end of the last follow-up period another swab was taken from the fitting surface of the denture and was plated on sabouraud's agar plates and incubated at 37°C to detect the presence of any candida!growth on the denture fitting surface.