Shaefer Jeffry R, Lee Stephanie J, Anderson Nina K
Assistant Professor, Department of Oral and Maxillofacial Surgery, Harvard School of Dental Medicine, Cambridge, Massachusetts.
Dental student, Harvard School of Dental Medicine, Cambridge, Massachusetts.
Compend Contin Educ Dent. 2017 Jun;38(6):e5-e8.
Pain from local anesthesia injections can be reduced by distraction and counter-stimulation techniques. This study investigated the DentalVibe® Injection Comfort System (third-generation, DV3), developed to lessen anesthesia pain through pulsed vibration, a form of counter-stimulation. The aim of the study was to evaluate both the efficacy of DV3 in reducing pain and discomfort from intraoral long buccal (LB) and inferior alveolar nerve (IAN) injections and the time needed to achieve complete anesthesia during an IAN block. The study enrolled 60 subjects, 30 men and 30 women, aged 21 to 32 years, who rated both injection pain on a visual analog scale and discomfort, unpleasantness, and difficulty in enduring the injection on a modified symptom severity index. Each subject received bilateral LB injections and an IAN block. Using block design, the third-generation DV (DV3) was randomly assigned to either the first or second LB injection and to 30 subjects on their third injection, the IAN block. No topical anesthesia was applied. Subjects receiving DV3 reported significantly less pain, discomfort, unpleasantness, and difficulty in enduring LB and IAN injections (P < .05), regardless of whether DV3 was used on the first or second LB injection. Time to complete anesthesia was not significantly different (P > .05) when DV3 was used on IAN block injections. The DV3 significantly (P < .02) reduced pain/discomfort from anesthetic injections in this pilot study, in which many subjects were either dental or medical students familiar with performing and enduring injections. More studies are warranted on layperson populations.
通过分散注意力和反刺激技术可以减轻局部麻醉注射引起的疼痛。本研究调查了DentalVibe®注射舒适系统（第三代，DV3），该系统旨在通过脉冲振动（一种反刺激形式）减轻麻醉疼痛。本研究的目的是评估DV3在减轻口腔内长颊神经（LB）和下牙槽神经（IAN）注射引起的疼痛和不适方面的疗效，以及在IAN阻滞期间实现完全麻醉所需的时间。该研究招募了60名受试者，30名男性和30名女性，年龄在21至32岁之间，他们在视觉模拟量表上对注射疼痛进行评分，并在改良症状严重程度指数上对不适、不愉快和忍受注射的困难程度进行评分。每个受试者接受双侧LB注射和IAN阻滞。采用区组设计，将第三代DV（DV3）随机分配到第一次或第二次LB注射中，并在30名受试者的第三次注射（IAN阻滞）中使用。未应用局部麻醉。接受DV3的受试者在LB和IAN注射时报告的疼痛、不适、不愉快和忍受困难明显较少（P < .05），无论DV3是用于第一次还是第二次LB注射。当在IAN阻滞注射中使用DV3时，完成麻醉的时间没有显著差异（P > .05）。在这项初步研究中，DV3显著（P < .02）减轻了麻醉注射引起的疼痛/不适，在该研究中，许多受试者是熟悉注射操作和忍受注射的牙科或医学生。有必要对普通人群进行更多的研究。
