@article{oai:mdu.repo.nii.ac.jp:00001235, author = {笠原, 悦男 and 山田, 博仁 and 塚田, 洋 and 澤田, 周介 and 安西, 正明 and 山本, 昭夫 and 安田, 英一}, issue = {3}, journal = {松本歯学}, month = {Dec}, note = {application/pdf, Tooth length has been commonly measured in the clinic by the radiographic or electronic method. This study was done to determine whether Endocater (EC), a new electronic device for determining the length of tooth, was useful in cases of extirpation of vital pulp and infected root canal treatment clinically. A Root Canal Meter (R. C. M.) that had been usually used in our clinic, was utilized as a control. The results obtained were as follows : 1. For extirpation cases of vital pulp, R. C. M. could determine the lengths of teeth in all of 42 cases, but EC could not determine 15 of 42 cases (35.7%). On the other hand, at the first appointment for infected root canal treatment, EC could not measure the lengths of teeth in 3 of 32 cases (9.4%). The teeth lengths of the failure cases could be determined at the next appointment. 2. The teeth lengths determined by EC were from 0.5 to 1.0mm shorter than those measured by R. C. M. in most cases.}, pages = {321--328}, title = {Endocaterの臨床使用経験について 第2報 抜髓ならびに感染根管治療への応用}, volume = {13}, year = {1987} }