1999 年 12 巻 3 号 p. 343-349
Electric knife is convenient for dental treatment, particularly periodontal surgery. However, it is reported that the use to the titanium implant must be avoid. In this study, influence of the stimulus of the electric knife was investigated on the surrounding bone of the titanium (Ti) and hydroxyapatite (HA) implants. Ti and HA implants were inserted into the tibiae of the 16 rats. Six weeks later, the heads of the implants were stimulated by the electric knife and the surrounding bone around implant was investigated at just before the stimulus and 2, 4, 6 weeks after the stimulus. The surrounding bone was damaged by the stimulus of the electric knife in all implants. However, bone contact to the Ti was lost, whereas that to the HA was maintained.