Evaluation of the effect of hypochlorite cleanser on water sorption and solubility of flexible and conventional hot – cure – acrylic denture base. (A comparative study)

Abstract

Background: One of the primary applications for thermoplastics flexible resinsinvolved flexible partial dentures tooth born and combination flexible andchromium cobalt framework partial denture. There are certain to be many newclinical applications for thermoplastic resins in dentistry. The cleansers effectmaturity of the sterilization of acrylic resin denture base; therefore, it usingchemical or physical methods can minimize the risk of periodontal disease such asdenture related stomatitis in denture users.This study aims: to evaluate of the effect of hypochlorite cleanser on the watersorptsion and solubility of flexible and conventional hot – cure acrylic resindenture base. Compare the results on the water sorption and solubility betweenspecimens.Methods: Sixty of flexible and hot –cured acrylic resin specimens were prepared asfollowing:30 samples from hot – cure acrylic divided into two group 15 specimens immersein the hypochlorite and 15 specimens immerse in the water. The process is curedin the water bath according to the conventional method. 30 specimens fromflexible resin divided into two group 15 specimens immerse in the hypochloriteand 15 specimens immerse in the water. The process is cured in the plasticinjection machine.Results: showed highly significant differences among these groups. It showed that thehot – cured acrylic high water sorption and lower solubility and the flexible resinlower water sorption and high solubility.Conclusion:1. The comparison between the hot –cured acrylic and flexible resin denture baseimmersed in the hypochlorite and water on the water sorption is higher of thehot –cure acrylic and lower of the flexible resin.2. The flexible resin denture base immersed in the hypochlorite and water ishigher solubility compared with the hot –cured acrylic is lower solubility.