Landulpho A B, e Silva W A Buarque, e Silva F Andrade, Vitti M
Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas/College of Dentistry of Piracicaba (UNICAMP).
Electromyogr Clin Neurophysiol. 2002 Apr-May;42(3):187-91.
The effect of the occlusal splints on the treatment of temporomandibular disorders--a computerized electromyographic study of masseter and anterior temporalis muscles. The comprehension of the determinant factors of temporomandibular disorders is still inconclusive, since that the etiology is associated with multidisciplinary knowledge. The purpose of this study was to evaluate the effectiveness of the therapy with occlusal splints in patients with temporomandibular disorders by the computerized electromyography. It was selected twenty-two patients with signs and symptoms with changes of the stomatognathic system, males and females patients, with ages between 18 and 53 years old. Plane occlusal surface splints were constructed in acrylic resin and placed in each patients. Electromyographic evaluations of masseter and anterior temporalis muscles were performed during the mandibular isometric clenching before inserting and after 90, 120 and 150 days of using the occlusal splints. After 90 and 120 days of using them, they were changed by canine guidance and group function respectively. The results after the polynomial regression analysis showed that there were significant reductions (p < 0.05) in the electromyographic activity along the entire period of treatment during the mandibular isometric clenching for masseter and anterior temporalis muscles. The group function showed a shorter eletromyographic activity for both muscles.
咬合板对颞下颌关节紊乱症治疗的影响——一项关于咬肌和颞肌前束的计算机化肌电图研究。由于颞下颌关节紊乱症的病因与多学科知识相关，因此对其决定因素的理解仍无定论。本研究的目的是通过计算机化肌电图评估咬合板治疗颞下颌关节紊乱症患者的有效性。选取了22名有口颌系统改变体征和症状的患者，包括男性和女性，年龄在18至53岁之间。用丙烯酸树脂制作平面咬合面夹板并放置于每位患者口中。在插入咬合板前以及使用咬合板90、120和150天后的下颌等长紧咬过程中，对咬肌和颞肌前束进行肌电图评估。在使用90天和120天后，分别将其更换为尖牙引导和组牙功能型。多项式回归分析结果显示，在整个治疗期间，咬肌和颞肌前束在下颌等长紧咬时的肌电活动均有显著降低（p < 0.05）。组牙功能型显示这两块肌肉的肌电活动持续时间更短。
