Maxillofacial Plastic and Reconstructive Surgery

Korean Association of Maxillofacial Plastic and Reconstructive Surgeons (대한악안면성형재건외과학회)
권호 표지

ELECTROMYOGRAPHIC ANALYSIS OF THE MASSETER AND ANTERIOR TEMPORALIS MUSCLE AFTER ORTHOGNATHIC SURGERY OF PATIENTS WITH FACIAL ASYMMETRY

안모비대칭을 동반한 하악전돌증 환자에서 악교정 수술 전후 교근과 전측두근의 근전도 변화

  • Son, Seong-Il (Department of Oral & Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Son, Jung-Hee (Department of Oral & Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Jang, Hyun-Jung (Department of Oral & Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Lee, Sang-Han (Department of Oral & Maxillofacial Surgery, School of Dentistry, Kyungpook National University) ;
  • Cha, Du-Won (Division of Oral & Maxillofacial Surgery, Dept. of Dentistry, Daegu Fatima Hospital) ;
  • Baek, Sang-Heum (Division of Oral & Maxillofacial Surgery, Dept. of Dentistry, Daegu Fatima Hospital)
  • 손성일 (경북대학교 치과대학 구강악안면외과학교실) ;
  • 손정희 (경북대학교 치과대학 구강악안면외과학교실) ;
  • 장현중 (경북대학교 치과대학 구강악안면외과학교실) ;
  • 이상한 (경북대학교 치과대학 구강악안면외과학교실) ;
  • 차두원 (대구파티마병원 치과.구강악안면외과학교실) ;
  • 백상흠 (대구파티마병원 치과.구강악안면외과학교실)
  • Published : 2005.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

The function of the masseter and anterior temporal muscles was assessed by electromyography in 30 patients with mandibular prognathism (20 patients with facial asymmetry and 10 patients without facial asymmetry) before orthognathic surgery and 4weeks afterwards. Electromyogram(EMG) recordings were made during resting, clenching and swallowing. We compared with right-left difference of this recording and asymmetry index before and after orthognathic surgery. The result of this study was as follows. 1. There was no significant right-left difference in muscle activities of masticatory muscles both asymmetric groups and controls and many variable change after orthognathic surgery.(P>0.05) 2. The mean electric activity of the masticatory muscles was found to have decreased during more clenching than resting, but there was no statistically significant difference because of individual difference of measuring values.(P>0.05) 3. The asymmetry index of masticatory muscles in asymmetric groups was significantly greater during clenching compared with controls.(P<0.05) In conclusion, no right-left difference of muscle activities was found in patients with facial asymmetry before orthognathic surgery and 4weeks afterwards. Not only muscular functioning but also many other factors, such as occlusion, temporomandibular joint disorder and trauma, probably affect facial asymmetry and will be analyzed in future studies. And we will need long term follow-up after orthognathic surgery.

Keywords

References

  1. Raustia AM, Oikarinen KS : Changes in electric activity of masseter and temporal muscles after mandibular sagittal split osteotomy. Int J Oral Maxillofac Surg 23 : 180, 1994 https://doi.org/10.1016/S0901-5027(05)80297-8
  2. Tallgren A, Melson B, and Hansen MA : An electromyographic and roentgen cephalometric study of occlusal morphofunctional disharmony in children. Am J Orthod 68 : 394, 1979
  3. Aragon SB, Van Sickels JE, Dolwick MF, Flanary CM : The effects of orthognathic surgery on mandibular range of motion. J Oral Maxillofac Surg 43 : 938, 1985 https://doi.org/10.1016/0278-2391(85)90006-0
  4. Magnusson T, Ahlborg G, Svartz K : Function of the masticatory system in 20patients with mandibular hypo-or hyperplasia after correction by a sagittal split osteotomy. Int J Oral Maxillofac Surg 19 : 289, 1990 https://doi.org/10.1016/S0901-5027(05)80423-0
  5. Strorum KA, Bell WH : The effect of physical rehabilitation on mandibular function after ramus osteotomies. J Oral Maxillofac Surg 44 : 94, 1986 https://doi.org/10.1016/0278-2391(86)90188-6
  6. Ellis E III, Dechow PC, Carlsson DS : A comparison of simulated bite forces after mandibular advancement using rigid and nonrigid fixation. J Oral Maxillofac Surg 46 : 26, 1988 https://doi.org/10.1016/0278-2391(88)90296-0
  7. Kim TS, Sohn BH : An electromyographic study of muscle activity in normal occlusion and skeletal class III malocclusion in adult. Kor J Orthod 22 : 627, 1992
  8. Kim MK : An electromyographic analysis of masticatory muscle in mandibular movement of subject with normal occlusion. Seoul Univ J 19 : 76, 1968
  9. Kim TS, Baik HS : An electromyographic study of the muscle activity in Angle's Class II div.1. Kor J Orthod 18 : 89, 1988
  10. Saifuddin M, Miyamoto K, Ueda H, Shikata N, Tanne K: An electromyographic evaluation of the bilateral symmetry and nature of masticatory muscle activity in jaw deformity patients during normal daily activities. J of Oral Rehabil 30 : 578, 2003 https://doi.org/10.1046/j.1365-2842.2003.00991.x
  11. Ingervall B, Thilander B, Ridell A : Changes in activity of the temporal, masseter and lip muscles after surgical correction of mandibular prognathism. Int J Oral Surg 8 : 290, 1979 https://doi.org/10.1016/S0300-9785(79)80051-4
  12. Ingervall B, Thuer U : Temporal muscle activity during the first year of Class II, division 1 malocclusion treatment with an activator. Am J of Orthod Dentofacial Orthop 99 : 361, 1991 https://doi.org/10.1016/0889-5406(91)70019-S
  13. Westesson P-L, Dahlberg G, Hansson L-G, Eriksson L, Ketonen L: Osseous and muscular changes after vertical ramus osteotomy. A magnetic resonance imaging study. Oral Surg 72 : 139, 1991
  14. Ingervall B, Thilander B : Relation between facial morphology and activity of the masticatory muscles. J Oral Rehabil 1 : 137, 1974
  15. Hirose K : The study of the relationships between the masticatory muscles activity and the craniofacial morphology in mandibular prognathism(in Japanese). Shigaku 78 : 49, 1990
  16. Haraguchi S, Takada K, Yasuda Y : Facial asymmetry in subjects with skeleta class III deformity. Angle Orthod 72 : 28, 2002
  17. Ahlgren J, Owall B : Muscular activity and chewing force; A polygraphic study of human mandibular movements. Arch. Oral Biol 15 : 271, 1970 https://doi.org/10.1016/0003-9969(70)90053-1
  18. Ingervall B, Egemark-Eriksson I: Function of temporal and masseter muscles in individuals with dual bite. Angle Orthod 49 : 131, 1979
  19. Liu ZJ, Yamagata K, Kasahara Y, Ito G : Electromyographic examination of jaw muscles in relation to symptoms and occlusion of patients with temporomandibular joint disorders. J Oral Rehabil 26 : 33, 1999 https://doi.org/10.1046/j.1365-2842.1999.00356.x
  20. Ferrario VF, Sforza C, D'addona A, Miani A: Reproducibility of elecrtomyographic measures : a statistical analysis. J of Oral Rehabil 18 : 513, 1991 https://doi.org/10.1111/j.1365-2842.1991.tb00074.x
  21. Ferrario VF, Sforza C, Miani JR, D'addona A, Barbini E : Electromyograpic activity of human masticatory muscles in normal young people. Statistical evaluation of reference values for clinical applications. J of Oral Rehabil 20 : 271, 1993 https://doi.org/10.1111/j.1365-2842.1993.tb01609.x
  22. Pirttiniemi PM : Association of mandibular and facial asymmetries- a review. Am. J of Ortho Dentofac Orthop 106 : 191, 1994 https://doi.org/10.1016/S0889-5406(94)70038-9
  23. Throckmorton GS, Dean JS : The relationship between jaw-muscle mechanical advantage and activity levels during isometric bites in humans. Arch of oral Biology 39 : 429, 1994 https://doi.org/10.1016/0003-9969(94)90174-0
  24. Ueda HM, Ishizuka Y, Miyamoto K, Morimoto N, Tanne K : Relationship between masticatory muscle activity and vertical craniofacial morphology. Angle Ortho 68 : 233, 1998