Lutz F, Sener B, Imfeld T, Barbakow F, Schüpbach P
Department of Preventive Dentistry, Periodontology and Cariology, University of Zurich Dental Institute, Switzerland.
Quintessence Int. 1993 Jan;24(1):53-63.
An ideal prophylaxis paste should have both cleaning and polishing properties. Key elements would be abrasive particles that become less aggressive under load. The abrasive perlite, a volcanic glass with a sheetlike geometry, is claimed to have these unique properties. This study evaluated the average particle size, size distribution, and morphology of perlite in raw form, in an unused prophylaxis paste, and a used prophylaxis paste. The surface roughness induced on enamel and dentinal specimens was quantitated after paste application in either a rubber cup or a nylon brush. Flour of pumice, a standard prophylaxis paste, a polishing paste, and water were tested similarly. The luster induced by the tested pastes and controls was assessed. Perlite blunted and disintegrated under load. The perlite-containing prophylaxis paste acted as a fine or superfine prophylaxis paste, although it was ranked as medium, based on the mean particle size of its abrasive in the fresh, unused form. Perlite might provide the properties required for the abrasive material of an ideal prophylaxis paste.
理想的预防性糊剂应兼具清洁和抛光性能。关键要素是在负载下活性降低的磨料颗粒。磨料珍珠岩是一种具有片状几何形状的火山玻璃，据称具有这些独特性能。本研究评估了原始状态、未使用的预防性糊剂和使用过的预防性糊剂中珍珠岩的平均粒径、粒径分布和形态。在使用橡胶杯或尼龙刷涂抹糊剂后，对釉质和牙本质标本上产生的表面粗糙度进行了定量分析。对浮石粉、一种标准预防性糊剂、一种抛光糊剂和水进行了类似测试。评估了测试糊剂和对照所产生的光泽。珍珠岩在负载下变钝并分解。含珍珠岩的预防性糊剂起到了细粒度或超细粒度预防性糊剂的作用，尽管根据其新鲜、未使用形式中磨料的平均粒径，它被归类为中等粒度。珍珠岩可能提供理想预防性糊剂磨料材料所需的性能。
