Electromyographic Assessment of the Masseter and Temporalis Muscles in Skeletal II Malocclusion Subjects With Varying Overjets: A Pilot Study.
class i malocclusion
class ii malocclusion
muscle activity
surface electromyography
symmetry
synergy
Journal
Cureus
ISSN: 2168-8184
Titre abrégé: Cureus
Pays: United States
ID NLM: 101596737
Informations de publication
Date de publication:
Sep 2023
Sep 2023
Historique:
received:
26
07
2023
accepted:
04
09
2023
medline:
6
10
2023
pubmed:
6
10
2023
entrez:
6
10
2023
Statut:
epublish
Résumé
Introduction Class II malocclusions are commonly associated with some muscle disharmony and imbalance. Diagnosis of muscle imbalance helps in treating the malocclusion as well as preventing relapse of the treatment. The aim of this study is to compare the muscle activity of masseter and temporalis in patients with skeletal Class II division 1 malocclusion with varying overjet using surface electromyography (sEMG). Materials and methods Ten subjects in the age range 18-35 years with skeletal Class II malocclusion and varying overjets who required orthodontic treatment were included in this study. Out of these 10 patients, five of them had a 2-4mm overjet and the other five had an overjet >4mm. A four-channel sEMG system was used to conduct the sEMG of muscles. Muscle activity, synergy, and symmetry of masseter and temporalis muscles were assessed and compared between the two groups with an Independent t-test. Results There were no significant differences in the muscle activities of the temporalis and masseter muscles in both groups. Symmetry and synergy of these muscles in the two groups also showed no significant difference (p>0.05) at rest and clenching. However, during chewing, the masseter muscle showed poor balance and activity. Conclusion The overjet in Class II division 1 malocclusions did not seem to affect the muscle activity at rest and during clenching. In patients with increased overjet, during chewing, masseter activity in terms of intensity and balance was poor.
Identifiants
pubmed: 37799218
doi: 10.7759/cureus.44645
pmc: PMC10548846
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e44645Informations de copyright
Copyright © 2023, Ramsundar et al.
Déclaration de conflit d'intérêts
The authors have declared that no competing interests exist.
Références
Med Oral Patol Oral Cir Bucal. 2008 Mar 01;13(3):E207-13
pubmed: 18305445
Angle Orthod. 2001 Jun;71(3):177-84
pubmed: 11407769
Dental Press J Orthod. 2018 Nov-Dec;23(6):40.e1-40.e10
pubmed: 30672991
Eur J Orthod. 1992 Apr;14(2):162-71
pubmed: 1582461
Am J Orthod. 1980 Sep;78(3):321-9
pubmed: 6931496
J Orthod Sci. 2018 Feb 15;7:3
pubmed: 29765915
J Prosthet Dent. 1985 Feb;53(2):243-7
pubmed: 3856667
Med Sci Monit. 2013 May 31;19:416-23
pubmed: 23722255
Am J Orthod. 1970 Mar;57(3):219-55
pubmed: 5263785
Am J Orthod. 1973 Nov;64(5):445-56
pubmed: 4518053