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首页> 外文期刊>The Journal of Prosthetic Dentistry >Indirect latex glove contamination and its inhibitory effect on vinyl polysiloxane polymerization.
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Indirect latex glove contamination and its inhibitory effect on vinyl polysiloxane polymerization.

机译：乳胶手套的间接污染及其对乙烯基聚硅氧烷聚合的抑制作用。

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STATEMENT OF PROBLEM: The inhibitory effect of indirect latex contamination on the polymerization of vinyl polysiloxane (VPS) impression material has been previously reported. However, the transfer of specific elements that cause inhibition has not been confirmed, nor has the removal of such contaminants been reported. PURPOSE: This study examined the surfaces of materials commonly used in restorative procedures that were contaminated by indirect latex glove contact and then evaluated for inhibition of polymerization of VPS. The effect of selected cleansing procedures was then studied. MATERIAL AND METHODS: Four experimental groups (n = 8) were prepared: (1) clean vinyl gloves (control), (2) clean gingival retraction cords (control), (3) contaminated vinyl gloves, and (4) contaminated gingival retraction cord. Microscopic evaluation of the appearance and the characterization of surface particulate contamination were performed for each. Three cleansing protocols were then evaluated for efficacy in cleaning vinyl glove surfaces contaminated by latex contact (n = 10): (1) brushing with water, (2) brushing with soap/rinsing with water, (3) cleansing with rubbing alcohol. The subsequent degree of VPS polymerization inhibition was evaluated subjectively. A chi-square test was used for data analysis (alpha=.05). RESULTS: Particulate sulfur elements and sulfur-chloride compounds were present on the contaminated substrates. None of the 3 cleansing procedures eliminated polymerization inhibition (P =.33). Residual elemental sulfur remained on all tested surfaces. CONCLUSION: Particulate sulfur and sulfur-chloride compounds were identified as the particulate contamination that resulted in polymerization inhibition of the tested VPS dental impression material. Removal of these contaminants from the tested vinyl gloves and gingival retraction cord was not possible with the 3 cleansing protocols tested in this study.
机译：问题陈述：先前已经报道了间接胶乳污染对乙烯基聚硅氧烷（VPS）印模材料聚合的抑制作用。但是，尚未证实引起抑制的特定元素的转移，也没有报道去除这种污染物。目的：本研究检查了修复过程中常用的材料表面，这些材料被间接的乳胶手套接触污染，然后评估了其对VPS聚合的抑制作用。然后研究所选清洁程序的效果。材料与方法：准备了四个实验组（n = 8）：( 1）清洁的乙烯基手套（对照组），（2）清洁的牙龈退缩带（对照组），（3）受污染的乙烯基手套和（4）受污染的牙龈退缩线。分别对外观和表面颗粒污染的特征进行微观评估。然后评估了三种清洁规程，以清洁被乳胶接触（n = 10）污染的乙烯基手套表面：（1）用水刷洗，（2）用肥皂刷/用水冲洗，（3）用外用酒精清洁。主观评估随后的VPS聚合抑制程度。卡方检验用于数据分析（alpha = .05）。结果：受污染的基质上存在颗粒状的硫元素和氯化硫化合物。 3种清洗程序均未消除聚合抑制作用（P = 0.33）。残留的元素硫残留在所有测试表面上。结论：颗粒状的硫和氯化硫化合物被确定为导致受测试的VPS牙科印模材料聚合抑制的颗粒​​污染物。使用本研究中测试的3种清洁方案，无法从测试的乙烯基手套和牙龈回缩线中去除这些污染物。

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