Multidisciplinary Department of Medical-Surgical and Dental Specialties. University of Campania Luigi Vanvitelli, Naples, Italy.
Department of General Surgery and Surgical-Medical Specialties, School of Dentistry. University of Catania, Italy.
Eur J Paediatr Dent. 2021 Jun;22(2):129-134. doi: 10.23804/ejpd.2021.22.02.8.
This prospective non-randomised case-control study analysed lip muscle activity after Lip Bumper (LB) treatment thought surface electromyography.
The study group was composed of 40 young patients with a mean age of 10 years and 1 month, treated with LB in the lower arch, while 40 children who did not undergo any treatment, matched for sex and age with the previous sample, constituted the control group. Measurements were performed at the beginning and after 1 year for both groups. Electromyographic recordings were obtained in rest position and during the swallowing of 50 ml of water.
In the study group, after 1 year of LB treatment, a statistically significant decrease in values was found; specifically, in upper lip muscle activities at rest position with the appliance in situ (p <0.002) and both with (p <0.001) and without (p <0.001) the appliance for the lower lip.
One year of LB treatment significantly reduced lip muscle activities at both rest position and during swallowing compared with the untreated sample. These results indicated a potential short-term of upper and lower lip muscle adaptation to the new balance induced by LB treatment.
本前瞻性非随机病例对照研究通过表面肌电图分析了 Lip Bumper（LB）治疗后唇部肌肉的活动情况。
研究组由 40 名平均年龄为 10 岁 1 个月的年轻患者组成，在下颌弓中接受 LB 治疗，而 40 名性别和年龄与前一样本相匹配、未接受任何治疗的儿童构成对照组。两组均在治疗开始和 1 年后进行测量。在休息和吞咽 50 毫升水时进行肌电图记录。
在研究组中，经过 1 年的 LB 治疗，发现数值有统计学意义的下降；具体来说，在上唇肌肉在有（p<0.002）和无（p<0.001）矫治器的情况下，以及在休息位置和在吞咽时（p<0.001）的活动都显著减少。
与未治疗组相比，LB 治疗 1 年后，唇部肌肉在休息和吞咽时的活动明显减少。这些结果表明，上唇和下唇肌肉可能会在短期内适应 LB 治疗引起的新平衡。
