中文摘要：

目的：比较新型STA无痛麻醉仪和传统手推卡局式注射器在老年牙周病患者牙周韧带注射麻醉和松动患牙拔除术中对患者血压、心率、疼痛程度、面部表情、合作程度和耐受行为的影响。方法：对52例老年牙周病患者的104颗松动牙采用随机、双盲、自身对照的方法进行研究。在局部麻醉时使用新型STA无痛麻醉仪（试验组）和卡局式注射器（对照组）行牙周韧带注射,分别记录麻醉和手术时患者的血压、心率数值并进行疼痛视觉模拟量表（VAS）、Kuttner、Frankl和Houpt各量表的评估,收集数据进行统计分析。结果：与卡局式注射器相比,使用新型STA无痛麻醉仪局部麻醉时,老年患者的舒张压（DBP）、VAS和Kuttner分值明显降低,Frankl和Houpt分值明显升高,差异有统计学意义（P〈0.05）,但手术中各项指标的差异无统计学意义（P〉0.05）。结论：使用新型STA无痛麻醉仪能明显减轻麻醉中老年患者的血压波动和疼痛程度、缓解面部紧张表情、提高合作程度和耐受行为。

英文摘要：

Objective：To compare the effect of single tooth anesthesia and the traditional hand-push cartridge on the blood pressure, heart rate, pain level, facial expression, cooperation and tolerance of the elderly patients during local anesthesia and tooth extraction.Methods：Fifty-two patients had their bilateral loose teeth removed through a random, double-blind, self-controlled clinical trial in two visits. On one side single tooth anesthesia （experimental group） was used for the periodontal ligament injection. On the other side, hand-push cartridge （control group） was used the same way. Blood pressure, heart rate, Visual Analogue Scale（VAS）, Kuttner facial expressions, Frankl Behavior Rating Score and Houpt Behavior Rating Scale were assessed during local anesthesia and tooth extraction. The data were collected and the statistical analyses were performed.Results：Compared with the hand-push cartridge,single tooth anesthesia could statistically lower systolic blood pressure, reduce VAS and Kuttner rating score, and increase Frankl and Houpt rating score when giving anesthesia to the elderly patients（P〈0.05）. However, no statistically significant differences were found during the tooth extraction （P〉0.05）.Conclusion：The usage of the single tooth anesthesia could lower the blood pressure, reduce pain, release the facial expression, and thus increase the degree of cooperation and improve tolerance when giving anesthesia to the elderly patients.