Bondemark Lars, Fredriksson Katarina, Ilros Susanna
Department of Orthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden.
World J Orthod. 2004 Summer;5(2):172-6.
To examine two types of orthodontic separators, focusing on the separating effect and patients' perception of pain and discomfort.
The separators tested were spring-type and elastomeric separators. Thirty teenagers participated, and all were scheduled for treatment with a fixed orthodontic appliance. Two spring-type and two elastomeric separators were placed alternately in the left or the right quadrant. After a separation period of 5 days, the amount of separation was measured with a leaf gauge. Nine questionnaires with visual analogue scales and questions with fixed answers were used to register the patient perceptions.
The mean separation was 0.3 mm for the spring-type and 0.4 mm for the elastomeric separators (P < .05). The springs were considered less painful than the elastomerics, but the difference was not statistically significant. For both separators, the pain was worst at day 2 and subsided almost completely by day 5. Due to pain, 14 of the 30 patients changed their food habits, and 13 took analgesics.
The separation effect of the two separators was considered clinically equivalent and since pain of moderate intensity occurs during the separation period, analgesics and soft food can be recommended.
研究两种正畸分离器，重点关注其分离效果以及患者对疼痛和不适的感受。
测试的分离器为弹簧式和弹性体分离器。30名青少年参与，所有患者均计划接受固定正畸矫治器治疗。在左象限或右象限交替放置两个弹簧式分离器和两个弹性体分离器。分离5天后，用叶片规测量分离量。使用9份带有视觉模拟量表和固定答案问题的问卷来记录患者的感受。
弹簧式分离器的平均分离量为0.3毫米，弹性体分离器为0.4毫米（P <.05）。弹簧式分离器被认为比弹性体分离器疼痛程度轻，但差异无统计学意义。对于两种分离器，疼痛在第2天最严重，到第5天几乎完全缓解。由于疼痛，30名患者中有14人改变了饮食习惯，13人服用了镇痛药。
两种分离器的分离效果在临床上被认为是等效的，并且由于在分离期间会出现中度疼痛，因此可以推荐使用镇痛药和软食。
