The Effect of Different Locally used Drinks on the Discoloration of Light Cured Provisional Acrylic Material. )In Vitro Study

Abstract

Background and Aim of Study: Color stability of provisional prosthetic material during treatment is considered essential for the patient's acceptance of the prosthesis. Recently there is an increased use of an Acrylic light cured temporary material in our country for making provisional restorations without the need for silicone key. The ability of this material for discoloration during the patient's consumption of common local drinks such as Zhourat, Karkadieh, Mallise and Kammoun is unknown.

This study aims at evaluating the effect of some common local drinks in our country on the discoloration of a light cured provisional material.

Materials and Methods: Forty patterns of a light cured provisional material with color A1, 6 mm. diameter and 10 mm length has been cured. These patterns have been divided into five groups each one containing 8 patterns to be immersed in Karkadie, Zhourat, Mallise, Kammoun and distillated water as a control group for five days. The shade of each pattern was then measured using Vita Easy Shade (Vita, Germany) apparatus and the results presented in the Vita 3D shade system and Vita Classic in addition to the color value readings (L) for the comparison among the groups.

Results: The immersed patterns in Karkadieh showed closer colors to the reddish and stronger than the other groups. Additionally, Malliseh, and Zhourat have similar effect on the discoloration which is closer to the medium dentine color.  Kammoun drink is the weakest in regard to the potential of discoloration which has not been distinguished from that of the patterns that have been immersed in distillated water and remained closer to the color A1 on Vita Classic shade guide.

Conclusions: The dentist should inform his patient about the necessity to avoid coloring drinks such as Karkadieh, Malliseh and Zhourat which are in common use in our country in order to prevent the discoloration of the provisional fixed prosthesis made of light cured acrylic during the service time