Browning G C, Bromme J C, Murchison D F
US Air Force Dental Corps, Idaho 83648, USA.
Quintessence Int. 1994 Nov;25(11):787-90.
Sulfur compounds found in latex gloves may be deposited on teeth and gingiva, inhibiting the setting of poly(vinylsiloxane) impression materials. The objective of this in vivo study was to screen a variety of methods to remove these contaminants. Ten patients were each tested with eight decontamination methods. Before each trial, the facial surfaces and adjacent gingiva of the maxillary central and lateral incisors were contaminated with 20 wipes of a latex glove. Decontamination methods included a 30-second rinse with mouthwash, 3% hydrogen peroxide, or air-water syringe; a 30-second toothbrush scrub with water, mouthwash, or hydrogen peroxide; a 30-second cotton pellet-Cavidry scrub; and a 30-second cleaning with a prophy cup and pumice. A 10-second water rinse followed each method except the air-water syringe and Cavidry groups. A low-viscosity poly(vinylsiloxane) impression material was then used to take an impression of the area. To test surface inhibition, the gingival, tooth, and palatal impression surfaces were wiped with cotton-tipped applicators, and the degree of inhibition was subjectively categorized by two independent investigators. Mechanical decontamination with a toothbrush or pumice was significantly more effective than was rinsing alone, regardless of the solution used.
乳胶手套中发现的硫化合物可能会沉积在牙齿和牙龈上，抑制聚（乙烯基硅氧烷）印模材料的凝固。这项体内研究的目的是筛选多种去除这些污染物的方法。10名患者每人接受了8种去污方法的测试。在每次试验前，用上颌中切牙和侧切牙的面部表面及相邻牙龈用乳胶手套擦拭20次进行污染。去污方法包括用漱口水、3%过氧化氢或空气-水注射器冲洗30秒；用水、漱口水或过氧化氢刷牙30秒；用棉球-Cavidry擦洗30秒；以及用洁治杯和浮石清洁30秒。除空气-水注射器组和Cavidry组外，每种方法后都进行10秒的水冲洗。然后用低粘度聚（乙烯基硅氧烷）印模材料对该区域取模。为了测试表面抑制情况，用棉签擦拭牙龈、牙齿和腭部印模表面，由两名独立的研究人员对抑制程度进行主观分类。无论使用何种溶液，用牙刷或浮石进行机械去污都比单独冲洗有效得多。
