COMPARATIVE EVALUATION OF CONTACT ANGLE OF ARTIFICIAL SALIVA WITH TWO DIFFERENT COMMERCIALLY AVAILABLE SELF CURE RESINS - AN IN VITRO STUDY

Abstract

Introduction: Self-curing resin, also named room temperature-curing denture base resin, is a mixture of dental base acrylic resin liquid (mainly component is methyl methacrylate, MMA) and dental base acrylic resin powder (mainly component is poly methyl methacrylate, PMMA).

Aim: The aim of this study was to compare the contact angle of artificial saliva with two different commercially available self cure resins. Contact angle of the saliva substitute on the denture base can be taken as an indicator of wettability. Good wetting of self cure resin is critical for optimum retention of dentures.

Materials and methods: 10 samples from each brand of self cure resins were taken. Ossila Goniometer was used to determine the contact angle. A drop of artificial saliva was dispensed on the surface of the standard substrate. Totally two readings (Right and Left) of contact angle were taken for 10 samples. The obtained values were averaged and the results were observed.

Result: This study was done to compare the contact angle of artificial saliva with two different commercially available self cure resins using Ossila Goniometer. Comparing the two self cure resins, DPI brand had a low average angle of 65.05 while the  Rely X brand had highest average angle of 66.55. The in vitro analysis shows DPI brand self cure resin is known to have high wettability.

Conclusion:Our study results proved that DPI brand self cure resin has more wettability and less contact angle compared to Rely X resin.