Quality evaluation of distilled water used in dental autoclaves

Abstract

basically, water is a solvent and can dissolve salts, solids and gases. Unfortunately, these dissolved substances because of being tiny, cant be eliminated by a simple filtration. Water is vaporized by the heat and the salts in the distillation plate will be remained alluvially. If we chill the prodused steam, the steam will be changed to the water, them the distilled water will be produced. With repaeting the distillation, we can the distilled water with better characteristics. One of the usage of the distilled water in dentistry, is using it in autoclaves. The distilled water used in autoclave must has the best quality, due to: 1) in increasing the longivity of autoclave 2) reducing the cost of keeping autoclave 3) increasing the longivity of the materials which are sterilized. Relating to the importance of the subjected and that the majority of dentists use distilled water, peapared and produces by componies, the aim of this study is investigation the measure impurity of the distilled water, produced by componies which is used in the autoclaves of dentistry offices. Methods And materials: the models ( distilled water ) studied will be collected. In this study, studied sampling is done randomly. Thus, 32 cases related to tir, mordad, shahrivar and mehr production, out of this distilled waters, will be collected. In this study TDS meter is used to measure the salt of the distilled water. First of all, pour some water into the strill plate, then turn on the TDSmeter. After wards , put the TDSmeter, vertically and fixed, inside the glass. Wait for seconds till the temrature of water, gets balanced with a number is determinable. The TDS, accepted for the distilled water based on 5ppm reference. Findings: in this study, amang researching groups, Samen company has more impurity mean rather than other groups and Colorpars company has less than others. The result of the examine of one-sided variance analyze shows a big diffrence among groups. Because the amount of examine is less than 0.05mg/li ( P<0.001) but for researching that among which two groups, there is big difference, we used a following test called Tukey. The result of the examine of Tukey showed that isnt a bid difference between the impurity mean, related to the distilled water distiller and the distilled water of Colorpars( P> 0.05). also it showed distilled water of Colorpars company, there is a big difference, between the impurity mean of distilled water gotten from the distiller with other groups and the Impurity mean of the distilled water of the distiller is less than the impurity mean of other groups. ( p< 0.05) Conclusion: we can get the result, based on recent findings of study, the distilled water of Colorpars, Farazdental and the distiller is suitable to use in dentistry autoclaves but other producers such as: Samen. Azarbaijan, SH.Gazi, Kasra and Zolal have the impurity out of standard and arent usable in autoclaves