Cooley R L, Barkmeier W W
J Prosthet Dent. 1980 Oct;44(4):426-9. doi: 10.1016/0022-3913(80)90102-x.
Pin channel preparations with twist drills have the potential to produce a temperature increase in the pulp chamber. This temperature increase is related to twist drill diameter, length (depth of channel preparation), and rotational speed.
使用麻花钻进行钉道预备有可能使髓腔温度升高。这种温度升高与麻花钻直径、长度（钉道预备深度）和转速有关。
