Electromyographic evaluation in children having rapid maxillary expansion

被引：30

作者：

De Rossi, Moara ^{[2
]}

De Rossi, Andiara ^{[3
]}

Cecilio Hallak, Jaime Eduardo ^{[4
]}

Vitti, Mathias ^{[5
]}

Hallak Regalo, Simone Cecilio ^{[1
]}

机构：

[1] Univ Sao Paulo, Ribeirao Preto Sch Dent, Dept Morphol Stomatol & Physiol, BR-14040900 Ribeirao Preto, SP, Brazil

[2] Univ Estadual Campinas, Dept Pediat Dent, Piracicaba Sch Dent, Ribeirao Preto, Brazil

[3] Univ Sao Paulo, Ribeirao Preto Sch Med, Dept Pathol, Sao Paulo, Brazil

[4] Univ Sao Paulo, Ribeirao Preto Sch Med, Dept Neuropsychiat, Sao Paulo, Brazil

[5] Univ Sao Paulo, Ribeirao Preto Sch Dent, Dept Morphol Stomatol & Physiol, Sao Paulo, Brazil

来源：

AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS | 2009年 / 136卷 / 03期

关键词：

HUMAN MASTICATORY MUSCLES; POSTERIOR CROSSBITE; NORMAL OCCLUSION; BLOCK APPLIANCE; JAW MUSCLES; TWIN-BLOCK; MASSETER;

D O I：

10.1016/j.ajodo.2007.08.027

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Introduction: The aim of this study was to analyze the electromyographic activity of the masseter and temporalis muscles of children having rapid maxillary expansion (RME) with a bonded rapid maxillary expansion appliance. Methods: The sample consisted of 27 children (mean age, 8.6 years) with posterior crossbite who required RME treatment. Electromyographic activity of the masseter and temporalis muscles was analyzed before treatment and after the appliance was removed. The mean interval between the 2 analyses was 5 months. Muscular activity was electromyographically analyzed in rest position, and with maximum voluntary dental clenching and chewing. Differences in the 2 measurements were evaluated by using paired t tests. Results and Conclusions: Electromyographic analysis showed that activity of the masseter and temporalis muscles increased significantly after the expansion appliance was removed during rest, dental clenching, and habitual chewing. (Am J Orthod Dentofacial Orthop 2009;136:355-60)

引用

页码：355 / 360

页数：6

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