Ohmoto K, Taira M, Shintani H, Yamaki M
Department of Operative Dentistry, Hiroshima University School of Dentistry, Japan.
J Prosthet Dent. 1994 Mar;71(3):319-23. doi: 10.1016/0022-3913(94)90475-8.
Bovine dentin was cut by hand with carbide burs and two cutting procedures while the rotational handpiece speed and the applied load were simultaneously monitored. It became evident that the maximum applied load during intermittent cutting varied from approximately 30 to 40 gm, whereas that during successive cutting ranged from approximately 20 to 60 gm. It showed that intermittent cutting produced a greater cutting effectiveness (for example, cutting volume per cut contact time) when carbide burs were used on dentin, compared with continuous cutting. It is recommended that the intermittent cutting procedure be used during work on patients.
用硬质合金车针手工切割牛牙本质，并采用两种切割程序，同时监测旋转手机的速度和施加的负荷。结果表明，间歇切割过程中的最大施加载荷约为30至40克，而连续切割过程中的最大施加载荷约为20至60克。结果显示，在牙本质上使用硬质合金车针时，间歇切割比连续切割产生更高的切割效率（例如，每次切割接触时间的切割量）。建议在对患者进行操作时采用间歇切割程序。
