Statistical analysis of differential lissajous EMG from normal occlusion and Class III malocclusion.

T. Deguchi, L. P. Garetto, Y. Sato, R. H. Potter, W. E. Roberts

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The method of differential lissajous electromyography (DL-EMG) was applied to investigate the relationship among the integrated EMG activity, timing, and coordination of the bilateral superficial anterior temporal and masseter muscle activities in normal occlusion and Class III malocclusion subjects. In both Class III malocclusion and normal occlusion subjects, the working side muscles showed a higher mean cumulative voltage (MCV) and mean maximum peak voltage (MMPV) compared with the balancing side. In addition, a higher MCV and MMPV of the working side masseter was observed in the normal occlusion group compared with that seen in the Class III group during both right and left side chewing (p <0.01). Discriminant analysis applied to examine the distribution, the size and the shape of DL-EMG pattern further indicated a statistical difference between subject groups (p <0.01). Finally, there was a significantly higher percentage of clockwise DL-EMG pattern-generation in the normal group compared with that seen for Class III subjects (p <0.01). These data indicate that, compared with normal subjects, patients with a Class III malocclusion have a demonstrably abnormal masticatory muscle balance which is well characterized by the DL-EMG method.

Original languageEnglish (US)
Pages (from-to)151-160
Number of pages10
JournalAngle Orthodontist
Volume65
Issue number2
StatePublished - 1995
Externally publishedYes

Fingerprint

Malocclusion
Electromyography
Temporal Muscle
Masticatory Muscles
Masseter Muscle
Mastication
Discriminant Analysis
Muscles

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Deguchi, T., Garetto, L. P., Sato, Y., Potter, R. H., & Roberts, W. E. (1995). Statistical analysis of differential lissajous EMG from normal occlusion and Class III malocclusion. Angle Orthodontist, 65(2), 151-160.

Statistical analysis of differential lissajous EMG from normal occlusion and Class III malocclusion. / Deguchi, T.; Garetto, L. P.; Sato, Y.; Potter, R. H.; Roberts, W. E.

In: Angle Orthodontist, Vol. 65, No. 2, 1995, p. 151-160.

Research output: Contribution to journalArticle

Deguchi, T, Garetto, LP, Sato, Y, Potter, RH & Roberts, WE 1995, 'Statistical analysis of differential lissajous EMG from normal occlusion and Class III malocclusion.', Angle Orthodontist, vol. 65, no. 2, pp. 151-160.
Deguchi, T. ; Garetto, L. P. ; Sato, Y. ; Potter, R. H. ; Roberts, W. E. / Statistical analysis of differential lissajous EMG from normal occlusion and Class III malocclusion. In: Angle Orthodontist. 1995 ; Vol. 65, No. 2. pp. 151-160.
@article{870a092964ab4e118d6632744de741f6,
title = "Statistical analysis of differential lissajous EMG from normal occlusion and Class III malocclusion.",
abstract = "The method of differential lissajous electromyography (DL-EMG) was applied to investigate the relationship among the integrated EMG activity, timing, and coordination of the bilateral superficial anterior temporal and masseter muscle activities in normal occlusion and Class III malocclusion subjects. In both Class III malocclusion and normal occlusion subjects, the working side muscles showed a higher mean cumulative voltage (MCV) and mean maximum peak voltage (MMPV) compared with the balancing side. In addition, a higher MCV and MMPV of the working side masseter was observed in the normal occlusion group compared with that seen in the Class III group during both right and left side chewing (p <0.01). Discriminant analysis applied to examine the distribution, the size and the shape of DL-EMG pattern further indicated a statistical difference between subject groups (p <0.01). Finally, there was a significantly higher percentage of clockwise DL-EMG pattern-generation in the normal group compared with that seen for Class III subjects (p <0.01). These data indicate that, compared with normal subjects, patients with a Class III malocclusion have a demonstrably abnormal masticatory muscle balance which is well characterized by the DL-EMG method.",
author = "T. Deguchi and Garetto, {L. P.} and Y. Sato and Potter, {R. H.} and Roberts, {W. E.}",
year = "1995",
language = "English (US)",
volume = "65",
pages = "151--160",
journal = "Angle Orthodontist",
issn = "0003-3219",
publisher = "E H Angle Orthodontists Research & Education Foundation, Inc.",
number = "2",

}

TY - JOUR

T1 - Statistical analysis of differential lissajous EMG from normal occlusion and Class III malocclusion.

AU - Deguchi, T.

AU - Garetto, L. P.

AU - Sato, Y.

AU - Potter, R. H.

AU - Roberts, W. E.

PY - 1995

Y1 - 1995

N2 - The method of differential lissajous electromyography (DL-EMG) was applied to investigate the relationship among the integrated EMG activity, timing, and coordination of the bilateral superficial anterior temporal and masseter muscle activities in normal occlusion and Class III malocclusion subjects. In both Class III malocclusion and normal occlusion subjects, the working side muscles showed a higher mean cumulative voltage (MCV) and mean maximum peak voltage (MMPV) compared with the balancing side. In addition, a higher MCV and MMPV of the working side masseter was observed in the normal occlusion group compared with that seen in the Class III group during both right and left side chewing (p <0.01). Discriminant analysis applied to examine the distribution, the size and the shape of DL-EMG pattern further indicated a statistical difference between subject groups (p <0.01). Finally, there was a significantly higher percentage of clockwise DL-EMG pattern-generation in the normal group compared with that seen for Class III subjects (p <0.01). These data indicate that, compared with normal subjects, patients with a Class III malocclusion have a demonstrably abnormal masticatory muscle balance which is well characterized by the DL-EMG method.

AB - The method of differential lissajous electromyography (DL-EMG) was applied to investigate the relationship among the integrated EMG activity, timing, and coordination of the bilateral superficial anterior temporal and masseter muscle activities in normal occlusion and Class III malocclusion subjects. In both Class III malocclusion and normal occlusion subjects, the working side muscles showed a higher mean cumulative voltage (MCV) and mean maximum peak voltage (MMPV) compared with the balancing side. In addition, a higher MCV and MMPV of the working side masseter was observed in the normal occlusion group compared with that seen in the Class III group during both right and left side chewing (p <0.01). Discriminant analysis applied to examine the distribution, the size and the shape of DL-EMG pattern further indicated a statistical difference between subject groups (p <0.01). Finally, there was a significantly higher percentage of clockwise DL-EMG pattern-generation in the normal group compared with that seen for Class III subjects (p <0.01). These data indicate that, compared with normal subjects, patients with a Class III malocclusion have a demonstrably abnormal masticatory muscle balance which is well characterized by the DL-EMG method.

UR - http://www.scopus.com/inward/record.url?scp=0029182937&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029182937&partnerID=8YFLogxK

M3 - Article

VL - 65

SP - 151

EP - 160

JO - Angle Orthodontist

JF - Angle Orthodontist

SN - 0003-3219

IS - 2

ER -