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首页> 外文期刊>The Journal of the American Dental Association >A comparison of a refrigerant and a topical anesthetic gel as preinjection anesthetics: a clinical evaluation.
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A comparison of a refrigerant and a topical anesthetic gel as preinjection anesthetics: a clinical evaluation.

机译：制冷剂和局部麻醉凝胶作为注射前麻醉剂的比较：临床评估。

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BACKGROUND: The authors used a split-mouth design to determine the effectiveness of a refrigerant compared with that of a topical anesthetic gel in reducing the pain experienced during a posterior palatal anesthetic injection. METHODS: Sixteen participants received a five-second application of a refrigerant (1,1,1,3,3-pentafluoropropane/1,1,1,2-tetrafluoroethane) and a two-minute application of a topical anesthetic gel (20 percent benzocaine gel) in the posterior palatal area before an injection of a local anesthetic solution was administered with a 30-gauge needle. Participants rated the pain they experienced after each injection by using a 100-millimeter visual analog scale (VAS) with endpoints of "no pain" and "worst possible pain." The authors calculated VAS scores by measuring the distance in millimeters from the no pain end of the scale. They analyzed data with a paired t test (alpha = .05). RESULTS: The group receiving the refrigerant had a mean VAS score of 17.7 +/- 15.3 mm, and the group receiving the topical anesthetic gel had a VAS score of 26.2 +/- 18.0 mm. The use of the refrigerant compared with the use of topical anesthetic gel significantly reduced the pain experienced during administration of local anesthetic injections (P = .02). CONCLUSIONS: The use of a refrigerant as a preinjection anesthetic was more effective compared with the use of a topical anesthetic gel in reducing the pain experienced by participants who received a posterior palatal injection. CLINICAL IMPLICATIONS: The potential benefits of using a refrigerant rather than a topical anesthetic gel are pain reduction, decreased application time, ease of application and avoidance of displeasing taste.
机译：背景：作者使用裂口设计来确定与局部麻醉凝胶相比，制冷剂在减轻后lat麻醉注入过程中所产生的疼痛方面的有效性。方法：十六名参与者接受了五秒钟的制冷剂（1,1,1,3,3-五氟丙烷/ 1,1,1,2-四氟乙烷）的应用和两分钟的局部麻醉凝胶的应用（20％在使用30号针头注射局麻药之前在pa后区域注入苯佐卡因凝胶。参与者通过使用100毫米视觉模拟量表（VAS）评估每次注射后所经历的疼痛，其终点为“无疼痛”和“最严重的疼痛”。作者通过测量距量表无痛端的距离（以毫米为单位）来计算VAS分数。他们使用配对t检验（α= 0.05）分析了数据。结果：接受制冷剂的组的VAS评分为17.7 +/- 15.3 mm，接受局部麻醉凝胶的组的VAS评分为26.2 +/- 18.0 mm。与使用局部麻醉凝胶相比，使用制冷剂显着减少了局部麻醉剂注射过程中的疼痛感（P = .02）。结论：与使用局部麻醉剂凝胶相比，使用制冷剂作为注射前麻醉剂更有效地减轻了接受后pa骨注射的参与者的痛苦。临床意义：使用制冷剂而不是局部麻醉凝胶的潜在好处是减轻疼痛，减少使用时间，易于使用以及避免令人不快的味道。

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