Reliability of electromyographic activity vs. bite-force from human masticatory muscles

Y. Gonzalez, Laura Iwasaki, W. D. Mccall, R. Ohrbach, E. Lozier, Jeffrey Nickel

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The reproducibility of electromyographic (EMG) activity in relation to static bite-force from masticatory muscles for a given biting situation is largely unknown. Our aim was to evaluate the reliability of EMG activity in relation to static bite-force in humans. Eighty-four subjects produced five unilateral static bites of different forces at different biting positions on molars and incisors, at two separate sessions, and the surface EMG activities were recorded from temporalis, masseter, and suprahyoid muscles bilaterally. Intraclass correlation coefficients (ICCs) were determined, and an ICC of ≥0.60 indicated good reliability of these slopes. The ICCs for jaw-closing muscles during molar biting were: temporalis muscles, ipsilateral 0.58-0.93 and contralateral 0.88-0.91; and masseter muscles, ipsilateral 0.75-0.86 and contralateral 0.69-0.88. The ICCs for jaw-closing muscles during incisor biting were: temporalis muscles, ipsilateral 0.56-0.81 and contralateral 0.34-0.86; and masseter muscles, ipsilateral 0.65-0.78 and contralateral 0.59-0.80. For the suprahyoid muscles the 95% CIs were mostly wide and most included zero. The slopes of the EMG activity vs. bite-force for a given biting situation were reliable for temporalis and masseter muscles. These results support the use of these outcome measurements for the estimation and validation of mechanical models of the masticatory system.

Original languageEnglish (US)
Pages (from-to)219-224
Number of pages6
JournalEuropean Journal of Oral Sciences
Volume119
Issue number3
DOIs
StatePublished - Jun 1 2011
Externally publishedYes

Fingerprint

Bite Force
Masticatory Muscles
Masseter Muscle
Muscles
Incisor
Jaw
Stomatognathic System

Keywords

  • Electromyographic (EMG)
  • Human
  • Masticatory muscles
  • Reliability

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Reliability of electromyographic activity vs. bite-force from human masticatory muscles. / Gonzalez, Y.; Iwasaki, Laura; Mccall, W. D.; Ohrbach, R.; Lozier, E.; Nickel, Jeffrey.

In: European Journal of Oral Sciences, Vol. 119, No. 3, 01.06.2011, p. 219-224.

Research output: Contribution to journalArticle

@article{4a3f638aadf948c89584d3ff82bef35f,
title = "Reliability of electromyographic activity vs. bite-force from human masticatory muscles",
abstract = "The reproducibility of electromyographic (EMG) activity in relation to static bite-force from masticatory muscles for a given biting situation is largely unknown. Our aim was to evaluate the reliability of EMG activity in relation to static bite-force in humans. Eighty-four subjects produced five unilateral static bites of different forces at different biting positions on molars and incisors, at two separate sessions, and the surface EMG activities were recorded from temporalis, masseter, and suprahyoid muscles bilaterally. Intraclass correlation coefficients (ICCs) were determined, and an ICC of ≥0.60 indicated good reliability of these slopes. The ICCs for jaw-closing muscles during molar biting were: temporalis muscles, ipsilateral 0.58-0.93 and contralateral 0.88-0.91; and masseter muscles, ipsilateral 0.75-0.86 and contralateral 0.69-0.88. The ICCs for jaw-closing muscles during incisor biting were: temporalis muscles, ipsilateral 0.56-0.81 and contralateral 0.34-0.86; and masseter muscles, ipsilateral 0.65-0.78 and contralateral 0.59-0.80. For the suprahyoid muscles the 95{\%} CIs were mostly wide and most included zero. The slopes of the EMG activity vs. bite-force for a given biting situation were reliable for temporalis and masseter muscles. These results support the use of these outcome measurements for the estimation and validation of mechanical models of the masticatory system.",
keywords = "Electromyographic (EMG), Human, Masticatory muscles, Reliability",
author = "Y. Gonzalez and Laura Iwasaki and Mccall, {W. D.} and R. Ohrbach and E. Lozier and Jeffrey Nickel",
year = "2011",
month = "6",
day = "1",
doi = "10.1111/j.1600-0722.2011.00823.x",
language = "English (US)",
volume = "119",
pages = "219--224",
journal = "European Journal of Oral Sciences",
issn = "0909-8836",
publisher = "Blackwell Munksgaard",
number = "3",

}

TY - JOUR

T1 - Reliability of electromyographic activity vs. bite-force from human masticatory muscles

AU - Gonzalez, Y.

AU - Iwasaki, Laura

AU - Mccall, W. D.

AU - Ohrbach, R.

AU - Lozier, E.

AU - Nickel, Jeffrey

PY - 2011/6/1

Y1 - 2011/6/1

N2 - The reproducibility of electromyographic (EMG) activity in relation to static bite-force from masticatory muscles for a given biting situation is largely unknown. Our aim was to evaluate the reliability of EMG activity in relation to static bite-force in humans. Eighty-four subjects produced five unilateral static bites of different forces at different biting positions on molars and incisors, at two separate sessions, and the surface EMG activities were recorded from temporalis, masseter, and suprahyoid muscles bilaterally. Intraclass correlation coefficients (ICCs) were determined, and an ICC of ≥0.60 indicated good reliability of these slopes. The ICCs for jaw-closing muscles during molar biting were: temporalis muscles, ipsilateral 0.58-0.93 and contralateral 0.88-0.91; and masseter muscles, ipsilateral 0.75-0.86 and contralateral 0.69-0.88. The ICCs for jaw-closing muscles during incisor biting were: temporalis muscles, ipsilateral 0.56-0.81 and contralateral 0.34-0.86; and masseter muscles, ipsilateral 0.65-0.78 and contralateral 0.59-0.80. For the suprahyoid muscles the 95% CIs were mostly wide and most included zero. The slopes of the EMG activity vs. bite-force for a given biting situation were reliable for temporalis and masseter muscles. These results support the use of these outcome measurements for the estimation and validation of mechanical models of the masticatory system.

AB - The reproducibility of electromyographic (EMG) activity in relation to static bite-force from masticatory muscles for a given biting situation is largely unknown. Our aim was to evaluate the reliability of EMG activity in relation to static bite-force in humans. Eighty-four subjects produced five unilateral static bites of different forces at different biting positions on molars and incisors, at two separate sessions, and the surface EMG activities were recorded from temporalis, masseter, and suprahyoid muscles bilaterally. Intraclass correlation coefficients (ICCs) were determined, and an ICC of ≥0.60 indicated good reliability of these slopes. The ICCs for jaw-closing muscles during molar biting were: temporalis muscles, ipsilateral 0.58-0.93 and contralateral 0.88-0.91; and masseter muscles, ipsilateral 0.75-0.86 and contralateral 0.69-0.88. The ICCs for jaw-closing muscles during incisor biting were: temporalis muscles, ipsilateral 0.56-0.81 and contralateral 0.34-0.86; and masseter muscles, ipsilateral 0.65-0.78 and contralateral 0.59-0.80. For the suprahyoid muscles the 95% CIs were mostly wide and most included zero. The slopes of the EMG activity vs. bite-force for a given biting situation were reliable for temporalis and masseter muscles. These results support the use of these outcome measurements for the estimation and validation of mechanical models of the masticatory system.

KW - Electromyographic (EMG)

KW - Human

KW - Masticatory muscles

KW - Reliability

UR - http://www.scopus.com/inward/record.url?scp=79955976321&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955976321&partnerID=8YFLogxK

U2 - 10.1111/j.1600-0722.2011.00823.x

DO - 10.1111/j.1600-0722.2011.00823.x

M3 - Article

C2 - 21564316

AN - SCOPUS:79955976321

VL - 119

SP - 219

EP - 224

JO - European Journal of Oral Sciences

JF - European Journal of Oral Sciences

SN - 0909-8836

IS - 3

ER -