Nist R A, Reader A, Beck M, Meyers W J
Department of Endodontics, Ohio State University, Columbus 43210, USA.
J Endod. 1992 Sep;18(9):455-9. doi: 10.1016/S0099-2399(06)80849-6.
The purpose of this study was to measure the degree of anesthesia obtained with the incisive nerve block, the inferior alveolar nerve block and a combination of both injections in mandibular teeth. Using a repeated measures design, 40 subjects randomly received an incisive nerve block, a conventional inferior alveolar nerve block, or a combination inferior alveolar nerve block plus an incisive nerve block using either lidocaine or saline (control), at four successive appointments. The mandibular teeth and contralateral canine (+/- controls) were blindly tested with an Analytic Technology pulp tester at 4-min cycles for 60 min. An 80 reading indicated complete pulpal anesthesia. The incisive nerve block alone did not result in successful pulpal anesthesia in the central, lateral, first, and second molars. It was successful in the first and second premolars but the duration was approximately 30 min. The combination inferior alveolar nerve block plus incisive nerve block was successful in the first and second premolars, and enhanced anesthesia for the laterals and first molars.
本研究的目的是测量在下颌牙中，通过切牙神经阻滞、下牙槽神经阻滞以及两种注射联合使用所获得的麻醉程度。采用重复测量设计，40名受试者在连续四次就诊时随机接受切牙神经阻滞、传统下牙槽神经阻滞，或使用利多卡因或生理盐水（对照）的下牙槽神经阻滞加切牙神经阻滞联合注射。使用Analytic Technology牙髓活力测试仪在4分钟周期内对下颌牙和对侧尖牙（±对照）进行60分钟的盲法测试。读数为80表明牙髓完全麻醉。单独的切牙神经阻滞在中切牙、侧切牙、第一磨牙和第二磨牙中未能成功实现牙髓麻醉。在第一前磨牙和第二前磨牙中成功，但持续时间约为30分钟。下牙槽神经阻滞加切牙神经阻滞联合注射在第一前磨牙和第二前磨牙中成功，并增强了侧切牙和第一磨牙的麻醉效果。
