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 resins
involved flexible partial dentures tooth born and combination flexible and
chromium cobalt framework partial denture. There are certain to be many new
clinical applications for thermoplastic resins in dentistry. The cleansers effect
maturity of the sterilization of acrylic resin denture base; therefore, it using
chemical or physical methods can minimize the risk of periodontal disease such as
denture related stomatitis in denture users.
This study aims: to evaluate of the effect of hypochlorite cleanser on the water
sorptsion and solubility of flexible and conventional hot – cure acrylic resin
denture base. Compare the results on the water sorption and solubility between
specimens.
Methods: Sixty of flexible and hot –cured acrylic resin specimens were prepared as
following:
30 samples from hot – cure acrylic divided into two group 15 specimens immerse
in the hypochlorite and 15 specimens immerse in the water. The process is cured
in the water bath according to the conventional method. 30 specimens from
flexible resin divided into two group 15 specimens immerse in the hypochlorite
and 15 specimens immerse in the water. The process is cured in the plastic
injection machine.
Results: showed highly significant differences among these groups. It showed that the
hot – cured acrylic high water sorption and lower solubility and the flexible resin
lower water sorption and high solubility.
Conclusion:
1. The comparison between the hot –cured acrylic and flexible resin denture base
immersed in the hypochlorite and water on the water sorption is higher of the
hot –cure acrylic and lower of the flexible resin.
2. The flexible resin denture base immersed in the hypochlorite and water is
higher solubility compared with the hot –cured acrylic is lower solubility.