Effect of natural disinfecting solutions on the wettability of silicone rubber impression materials.

T.AL- Khafagy, Mohammed

	Effect of natural disinfecting solutions on the wettability of silicone rubber impression materials.
journal of kerbala university
Article 1, Volume 8, Issue 4, 2012, Pages 0-0 PDF (0 K)
Author
Mohammed T.AL- Khafagy
Abstract
Back ground: There is growing concern about the issue of cross-infection in dental clinics and laboratories. There are many methods of disinfection for impression material; but these conventional strategies present several disadvantages. Aim: The aim of this study is to evaluate the effect of natural disinfection on the wettability of some silicone impression materials by contact angle registration of the gypsum slurry on flat surfaces of the impressions. Materials and methods: Zetaplus putty and Oromamax light with two types of natural disinfecting solutions lemon juice and apple vinegar for three disinfecting times were used in this study. Two treatment regimes were investigated: The first group of impression materials specimens was exposed to saliva for 5 minutes (control group). Second group of specimens was exposed to saliva then to disinfectant agents (experimental groups), a computerized photographic procedure was used to measure the wettability of the specimens. Statistical analysis was performed by using t-est at p<0.05. Results: Data indicated that Oromamax light recorded lower mean contact angles than the Zetaplus putty silicone used in this study regarding all tested groups. The disinfection of Oromamax light in lemon juice produced insignificant increase in the mean contact angle measurements at all disinfection times. Disinfection of Zetaplus putty in lemon juice produced a significant increase of the mean values at 10 and 15 min. disinfection times, while produced insignificant differences regarding 5 min. disinfection time when compared with the control group. The disinfection of Oromamax light in apple vinegar produced significant decrease in the mean contact angle measurements at all disinfection times. Disinfection of Zetaplus putty in apple vinegar produced a insignificant differences of the mean values at all disinfection times. Conclusion: Immersion disinfection of silicone impressions materials in natural apple vinegar is recommended in preference to maintain wettability of silicone rubber impression materials for short disinfection time as well as improve the wettability when used the apple vinegar with Oromamax light. While the natural lemon juice solution may adversely affect the wettability, especially when used for 10, 15 min immersion to disinfect the putty silicon impression material. Key words: Natural disinfection, wettability, silicon impression, contact angle.

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