Pintado M R, Conry J P, Douglas W H
Department of Oral Science, University of Minnesota School of Dentistry, Minneapolis 55455.
J Dent. 1991 Feb;19(1):33-8. doi: 10.1016/0300-5712(91)90034-v.
The volume, depth and area of fissure sealant wear at 30 months is reported. Eighteen premolar teeth were included in the study. The teeth were sealed (Concise, White Sealant, 3M Dental Products Div., St Paul, MN, USA) and an impression taken, yielding a baseline record. Subsequent impressions were taken at 6 months and 30 months. Epoxy replicas were made from all impressions and the occlusal surface of each replica was digitized using a displacement stylus and programmable retrieval system. A goodness-of-fit routine was used to compare the digitized replicas and quantify wear. At 30 months, there was a mean sealant volume loss of 0.43 +/- 0.24 mm3 (mean of the maximum depth loss = 221.8 +/- 115.1 microns; mean area loss = 0.62 +/- 0.15 mm2) for all teeth. A new parameter, the Occlusal Stability Ratio (OSR), is discussed which describes the relationship between sealant area and sealant volume.
报告了30个月时窝沟封闭剂的磨损体积、深度和面积。该研究纳入了18颗前磨牙。对这些牙齿进行封闭（使用美国明尼苏达州圣保罗市3M牙科产品部的Concise白色封闭剂）并制取印模，得到基线记录。随后在6个月和30个月时再次制取印模。从所有印模制作环氧树脂复制品，并使用位移触针和可编程检索系统对每个复制品的咬合面进行数字化处理。使用拟合优度程序比较数字化复制品并量化磨损情况。30个月时，所有牙齿的封闭剂平均体积损失为0.43±0.24立方毫米（最大深度损失的平均值 = 221.8±115.1微米；平均面积损失 = 0.62±0.15平方毫米）。讨论了一个新参数，即咬合稳定性比率（OSR），它描述了封闭剂面积与封闭剂体积之间的关系。
