Loney R W, Moulding M B
Division of Removable Prosthodontics, College of Dentistry, University of Saskatchewan, Saskatoon, Canada.
Int J Prosthodont. 1993 Jul-Aug;6(4):390-6.
A raised ridge on a Molloplast-B sample was removed using one of three burs, four stones, or a coarse sandpaper disc. Samples were polished using pumice alone, tin oxide alone, or both agents. A flat, unfinished sample served as a control. The average surface roughness was measured after reductions and subsequent polishings. The length of time required for initial reduction was recorded. Average surface roughness measurements ranged from 16.0 to 1.4 microns, with the control measuring 0.66 micron. Without polishing, burs produced rougher surfaces than stones and required longer times for reduction. Bur samples also remained rougher than stone samples after pumicing. No significant differences were found between treatments or controls after the use of either a combination of pumice and tin oxide or tin oxide alone.
使用三种牙钻、四种磨石或粗砂纸盘之一去除Molloplast - B样本上的凸起脊。样本分别单独使用浮石、单独使用氧化锡或两种试剂进行抛光。一个未经处理的平整样本作为对照。在进行修整和后续抛光后测量平均表面粗糙度。记录初始修整所需的时间。平均表面粗糙度测量值在16.0至1.4微米之间，对照样本测量值为0.66微米。未进行抛光时，牙钻产生的表面比磨石更粗糙，且修整所需时间更长。在使用浮石后，牙钻样本表面也比磨石样本更粗糙。单独使用浮石和氧化锡组合或仅使用氧化锡后，处理组与对照组之间未发现显著差异。
