Department of Orthodontics, Baskent University, Ankara, Turkey.
Angle Orthod. 2011 Sep;81(5):807-11. doi: 10.2319/092110-550.1. Epub 2011 Mar 28.
To evaluate the pain during the use of intermaxillary elastics and to compare it with that of initial archwire placement.
Sixteen orthodontic patients who underwent initial bonding (7 girls, 13 boys; mean age 16.75 ± 2.61 years) and 19 patients who would be using intermaxillary elastics for the first time (13 girls, 7 boys; mean age 16.21 ± 3.01 years) were enrolled in this prospective study. A visual analog scale form was given to each patient to measure the pain levels, and these were measured by the same investigator using a digital caliper. Data were evaluated using Mann Whitney U-test.
The pain started to increase 2 hours after the application of elastics. The highest levels were achieved at the sixth hour and the same night. The pain levels started to decrease at day 2. Although the pain levels of the elastic group started to decrease after the second day, the pain levels of the initial bonding group were still significantly high.
Intermaxillary elastics cause similar amounts of pain compared with initial archwire placement, but the pain of the elastics did not last as long as the pain felt after initial bonding.
评估使用颌间橡皮圈时的疼痛程度，并与初始弓丝放置时的疼痛程度进行比较。
本前瞻性研究纳入了 16 名接受初始粘结的正畸患者（7 名女孩，13 名男孩；平均年龄 16.75±2.61 岁）和 19 名首次使用颌间橡皮圈的患者（13 名女孩，7 名男孩；平均年龄 16.21±3.01 岁）。每位患者都填写了一份视觉模拟评分表来测量疼痛程度，由同一位研究者使用数字卡尺进行测量。数据采用曼-惠特尼 U 检验进行评估。
橡皮圈应用后 2 小时疼痛开始增加，第 6 小时和当晚达到最高水平，第 2 天开始下降。虽然弹性组的疼痛水平在第二天后开始下降，但初始粘结组的疼痛水平仍然显著较高。
与初始弓丝放置相比，颌间橡皮圈引起的疼痛程度相似，但弹性组的疼痛持续时间不如初始粘结后长。
