自从Chenaux(1976)详细报道了牙周韧带麻醉法之后,引起了牙科界的注意。Walton及Abbott(1981),Malamed(1982)及Kaufman等(1983)报告了这一麻醉法的临床效果。Simon等(1982),Wall(1983)报道了这一技术的优点。Smith等(1983),Galili等研究了麻药进入并在组织中扩散的途径。这些研究表明,当阻滞或浸润麻醉效果不佳时,牙周韧带内注射麻醉可以成功地麻醉牙髓。作者的临床经验表明,采用牙周韧带注射法所用局麻剂不同,其麻醉牙髓所持续的时间及效果亦不同。但文献中尚未见这方面的研究报告。为此,作者以10名年龄为25～31岁的健康的牙科学生作为受试者,对牙科 After the periodontal ligament anesthesia was reported in detail by Chenaux (1976), it has drawn the attention of the dental community. Walton and Abbott (1981), Malamed (1982) and Kaufman et al. (1983) reported the clinical efficacy of this anesthesia. Simon et al. (1982) and Wall (1983) reported on the advantages of this technique. Smith et al. (1983), Galili et al. Studied the pathways into which anesthetic enters and spreads in tissues. These studies show that anesthesia with intra-periodontal ligament anesthesia can successfully pulp the pulp when block or infiltration anesthesia does not work well. The author's clinical experience shows that the use of local anesthetic injection of periodontal ligament is different from the duration and effect of anesthesia dental pulp is also different. However, the literature has not yet seen this research report. To this end, the author of 10 aged 25 to 31-year-old healthy dental students as subjects, dental