DeWald J P, Nakajima H, Bell L J
Department of Restorative Sciences, Baylor College of Dentistry, Dallas, Tex.
J Prosthet Dent. 1994 Apr;71(4):394-9. doi: 10.1016/0022-3913(94)90102-3.
Bond strengths between disinfected putty impressions and subsequent wash applications were determined in specimens made to simulate clinically an interrupted two-step impression technique. The effect of a disinfectant on the bond strength between a disinfected wash impression and a subsequent wash application was also evaluated to simulate perfecting a disinfected final impression clinically. Vinyl polysiloxane (putty or wash) and polyether (wash only) impression materials were placed in perforated metal cylinders, allowed to set, and dipped in an iodine or glutaraldehyde disinfectant. Wash material was then applied to the disinfected material by use of another metal cylinder and allowed to set before the specimen was tested in tensile mode. Significant decreases in bond strengths were found in both clinical simulations but were limited to specific impression material and disinfectant combinations.
在模拟临床间断两步印模技术制作的标本中，测定了消毒后的油泥印模与后续冲洗应用之间的粘结强度。还评估了消毒剂对消毒后的冲洗印模与后续冲洗应用之间粘结强度的影响，以模拟临床上完善消毒后的最终印模。将乙烯基聚硅氧烷（油泥或冲洗剂）和聚醚（仅冲洗剂）印模材料放入穿孔金属圆筒中，使其凝固，然后浸入碘或戊二醛消毒剂中。然后使用另一个金属圆筒将冲洗材料应用于消毒后的材料上，并使其凝固，之后在拉伸模式下对标本进行测试。在两种临床模拟中均发现粘结强度显著降低，但仅限于特定的印模材料和消毒剂组合。
