Gioso M A, Teixeira L L, Souza J I, Figueiredo J A, Pesce H A
Veterinary Hospital of University of Pennsylvania, Philadelphia 19104-6010, USA.
J Vet Dent. 1995 Dec;12(4):141-2.
The aim of this study was to investigate the efficacy of electronic apex locators to determine the root canal length in teeth of dogs. For this purpose, APIT and ENDOSONIC units, which are third generation apex locator devices, were used to identify the root length in 58 teeth (82 roots). The electronic method was compared to radiographic and tactile sense methods. The results showed that APIT and ENDOSONIC devices were ineffective when used to determine the root canal length in 2-3 year-old dogs. A beep indicating the canal depth was heard in only two of 82 (2.4%) canals. The digital-tactile sense method with radiographic confirmation is more appropriate for root length measurement than the electronic method during endodontic therapy in dogs.
本研究的目的是调查电子根尖定位仪在确定犬齿根管长度方面的有效性。为此，使用了第三代根尖定位仪设备APIT和ENDOSONIC装置来确定58颗牙齿（82个牙根）的牙根长度。将电子方法与X射线照相法和触觉法进行了比较。结果表明，在用于确定2至3岁犬的根管长度时，APIT和ENDOSONIC装置无效。在82个根管中，仅有2个（2.4%）能听到指示根管深度的蜂鸣声。在犬的牙髓治疗过程中，与电子方法相比，经X射线照相确认的数字触觉法更适合牙根长度测量。
