Rossouw P Emile, Tortorella Andrew
Baylor College of Dentistry, Dallas, Texas 75246, USA.
J Can Dent Assoc. 2003 Jun;69(6):384-8.
To test and describe the use of various combinations of mechanical and chemical techniques for enamel reduction to obtain a smooth surface.
Bovine teeth (2 surfaces on each of 32 teeth) were used. The teeth were mounted in blocks of dental plaster, which were then mounted in a vise. The mesiodistal enamel contact areas were reduced by various combinations of mechanical and chemical aids. The mesiodistal width of each tooth was measured with a digital caliper after initial reduction of the enamel surface and again after polishing. The teeth were subsequently prepared and mounted for scanning electron microscopy.
All combinations yielded statistically significant enamel reduction (p < 0.05). The use of acid stripping in conjunction with mechanical procedures produced especially smooth enamel surfaces.
Steps must be taken to ensure that a smooth enamel surface remains after enamel reduction and polishing. It is recommended that conventional enamel etchants be added to the polishing procedure. Enamel reduction can increase available space, but the quantity of enamel that can be removed without adverse consequences should be carefully evaluated.
测试并描述使用机械和化学技术的各种组合进行牙釉质减薄以获得光滑表面的情况。
使用牛牙（32颗牙齿，每颗牙齿2个表面）。将牙齿固定在牙科石膏块中，然后将石膏块固定在虎钳上。通过机械和化学辅助手段的各种组合来减少近远中牙釉质接触面积。在牙釉质表面初步减薄后以及抛光后，用数字卡尺测量每颗牙齿的近远中宽度。随后对牙齿进行制备并安装用于扫描电子显微镜检查。
所有组合均产生了具有统计学意义的牙釉质减薄（p < 0.05）。酸蚀与机械操作相结合可产生特别光滑的牙釉质表面。
必须采取措施确保牙釉质减薄和抛光后仍保留光滑的牙釉质表面。建议在抛光过程中添加传统的牙釉质蚀刻剂。牙釉质减薄可增加可用空间，但应仔细评估在无不良后果的情况下可去除的牙釉质量。
