von Fraunhofer J A, Givens C D, Overmyer T J
Department of Primary Patient Care, School of Dentistry, University of Louisville, Ky 40292.
J Am Dent Assoc. 1989 Aug;119(2):291-5. doi: 10.14219/jada.archive.1989.0212.
Cutting studies were performed on tooth enamel, dental amalgam, and composite resin through use of carbide burs and diamond stones with three irrigants. A mixture of water, alcohol, and glycerol significantly increased the rate of material removal when enamel was cut with diamonds and when dental amalgam was cut with diamonds and carbide burs. In contrast, the rate of material removal for composite resin was significantly faster with use of carbide burs than diamond stones, and the irrigant improved the cutting action for carbide burs. The studies indicate that chemomechanical effects operate with dental substrates, but the effect varies with the material being cut and the cutting tool used. The chemomechanical effects observed here significantly improve the rate of material removal with diamond stones and carbide burs.
通过使用硬质合金车针和金刚石磨石以及三种冲洗剂，对牙釉质、银汞合金和复合树脂进行切割研究。当用金刚石切割牙釉质以及用金刚石和硬质合金车针切割银汞合金时，水、酒精和甘油的混合物显著提高了材料去除率。相比之下，使用硬质合金车针切割复合树脂时的材料去除率明显快于使用金刚石磨石，并且冲洗剂改善了硬质合金车针的切割效果。研究表明，化学机械效应在牙科基体中起作用，但该效应因被切割材料和所使用的切割工具而异。此处观察到的化学机械效应显著提高了金刚石磨石和硬质合金车针的材料去除率。
