Electromyographic Evaluation of Masticatory Muscles Following Surgical Orthodontics with Skeletal Mandibular Prognathism
The aim of this study was to evaluate the recovery process of masticatory muscle activity after orthognathic surgery. The subjects were 5 adult female patients with mandibular prognathism who had received orthodontic treatment at the Department of Orthodontics of Showa University Dental Hospital bef...
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| Published in | The Journal of Showa University Dental Society Vol. 27; no. 1; pp. 16 - 26 |
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| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | English |
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Showa University Dental Society
31.03.2007
昭和大学・昭和歯学会 |
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| Online Access | Get full text |
| ISSN | 0285-922X 2186-5396 |
| DOI | 10.11516/dentalmedres1981.27.16 |
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| Abstract | The aim of this study was to evaluate the recovery process of masticatory muscle activity after orthognathic surgery. The subjects were 5 adult female patients with mandibular prognathism who had received orthodontic treatment at the Department of Orthodontics of Showa University Dental Hospital before undergoing mandibular osteotomy at the Department of Oral Surgery of Showa University Dental Hospital. Surface electromyography was performed just prior to surgery, and 1 month, 3 months and 6 months postoperatively. Bilateral recordings were made from the masseter muscles and from the anterior and posterior temporal muscles during maximal clenching. The results were as follows : (1) One month postoperatively, all of the muscles showed markedly lower levels of activity than before surgery. However, the 3 month and 6 month examinations showed a tendency for gradual recovery of muscle function. (2) Six months after surgery, the degree of recovery varied, with the muscle function in some patients not recovering to preoperative levels. (3) Two of the patients showed distinct asymmetries of muscle activity in the preoperative recordings. In these cases, the asymmetries persisted 6 months after surgery. Our findings indicate that the recovery of muscle function in patients with mandibular prognathism who have undergone sagittal split ramus osteotomy varies between patients, and is likely to continue for longer than 6 months in most cases |
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| AbstractList | The aim of this study was to evaluate the recovery process of masticatory muscle activity after orthognathic surgery. The subjects were 5 adult female patients with mandibular prognathism who had received orthodontic treatment at the Department of Orthodontics of Showa University Dental Hospital before undergoing mandibular osteotomy at the Department of Oral Surgery of Showa University Dental Hospital. Surface electromyography was performed just prior to surgery, and 1 month, 3 months and 6 months postoperatively. Bilateral recordings were made from the masseter muscles and from the anterior and posterior temporal muscles during maximal clenching. The results were as follows : (1) One month postoperatively, all of the muscles showed markedly lower levels of activity than before surgery. However, the 3 month and 6 month examinations showed a tendency for gradual recovery of muscle function. (2) Six months after surgery, the degree of recovery varied, with the muscle function in some patients not recovering to preoperative levels. (3) Two of the patients showed distinct asymmetries of muscle activity in the preoperative recordings. In these cases, the asymmetries persisted 6 months after surgery. Our findings indicate that the recovery of muscle function in patients with mandibular prognathism who have undergone sagittal split ramus osteotomy varies between patients, and is likely to continue for longer than 6 months in most cases |
| Author | OHASHI, Masaru YAMAGUCHI, Tetsutaro WATANABE, Hiroyuki SHINTANI, Satoru MAKI, Koutaro NAKAJIMA, Kan SHIROTA, Tatsuo USUI, Toshiro |
| Author_xml | – sequence: 1 fullname: OHASHI, Masaru organization: Department of Oral and Maxillofacial Surgery, Showa University School of Dentistry – sequence: 1 fullname: SHINTANI, Satoru organization: Department of Oral and Maxillofacial Surgery, Showa University School of Dentistry – sequence: 1 fullname: MAKI, Koutaro organization: Department of Orthodontics, Showa University School of Dentistry – sequence: 1 fullname: NAKAJIMA, Kan organization: Department of Orthodontics, Showa University School of Dentistry – sequence: 1 fullname: SHIROTA, Tatsuo organization: Department of Oral and Maxillofacial Surgery, Showa University School of Dentistry – sequence: 1 fullname: USUI, Toshiro organization: Department of Orthodontics, Showa University School of Dentistry – sequence: 1 fullname: WATANABE, Hiroyuki organization: Department of Orthodontics, Showa University School of Dentistry – sequence: 1 fullname: YAMAGUCHI, Tetsutaro organization: Department of Orthodontics, Showa University School of Dentistry |
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| References | 11) Throckmorton GS, Buschang PH, Ellis E : Improvement of maximum occlusal forces after orthognathic surgery. J Oral Maxillofac Surg, 54 : 1080-1086, 1996 36) Pirttiniemi P, Kantomaa T, Lahtela P : Relationship between craniofacial and condyle path asymmetry in unilateral crossbite patients. Eur J Orthod, 12 : 408-413, 1990 34) Mew J : Comment on mandibular and facial asymmetries. Am J Orthod Dentofacial Orthop, 108 : 17A-18A, 1995 20) Tanimoto K : An electromyographic study on bilateral partial osteotomy of mandibular body. Jpn J Oral Maxillofac Surg, 27 : 357-368, 1981 (in Japanese 21) Kohno S : Occlusion and muscle activity. In IshiokaY, Kobayashi Y, Hasegawa S, Kohno S, Hayashi T (eds.) : The Basics and Its Application of Oral and Maxillofacial Functional Analysis-How is ME Machinery used for Clinics?-, 1st ed. Tokyo, 1991, DENTAL DIAMOND CO., pp 208-217 (in Japanese 25) Sanborn RT : Difference between the facial skeletal pattern Class III malocclusion and normal occlusion. Angle Orthodont, 25 : 208-222, 1955 23) Julien KC, Buschang PH, Throckmorton GS, Dechow PC : Normal masticatory performance in young adults and children. Arch Oral Biol, 41 : 69-75, 1996 27) Miyasaka T : Changes of masticatory muscle activity after surgical orthodontic treatment for mandibular protrusion. Kokubyo Gakkai Zasshi, 62 : 111-132, 1995 (in Japanese 2) Hara T, Sugawara J, Mitani H, Kawamura H : The changes of the masticatory efficiency following orthognathic surgery in skeletal class III patients : longitudinal study by means of ATP absorbance method. J Jpn Orthod Soc, 53 : 66-67, 1994 (in Japanese 10) Kim YG, Oh SH : Effect of mandibular setback surgery on occlusal forces. J Oral Maxillofac Surg, 55 : 121-126, 1997 17) Takahashi Y : An electromyographic study for mandibular prognathism indicated sagittal splitting of the mandibular ramus. Jpn J Oral Maxillofac Surg, 31 : 2101-2112, 1985 (in Japanese 16) Grossman WJ, Greefield BF, Tiones DS : Electromyography as an aid in diagnosis and treatment analysis. Am J Orthod 47 : 481-497, 1961 31) Takahashi H, Ihara K, Noguchi N, Goto M, Katsuki T : Changes of masticatory function after sagittal split-ting ramus osteotomy-From just before operation to one year after-.Jpn J Jaw Deform, 9 : 157-166, 1999 (in Japanese 7) Raustia AM, Oikarinen KS : Changes in electric activity of masseter and temporal muscles after mandibular sagittal split osteotomy. Int J Oral Maxillofac Surg, 55 : 699-707, 1997 28) Tanimoto K : An electromyographic study on bilateral partial osteotomy of mandibular body. Jpn J Oral Maxillofac Surg, 27 : 357-368, 1981 (in Japanese 5) Takahashi Y, Kawamura H, Shinbo T, Kikuchi S, Hayashi S, Soya T, Sugawara J : Evaluation of sagittal splitting ramus osteotomy for mandibular prognathism-changes of masticatory function. Jpn J Oral Maxillofac Surg, 32 : 799-807, 1986 (in Japanese 12) Ellis E, Throckmorton GS, Sinn DP : Bite forces before and after surgical correction of mandibular prognathism. J Oral Maxillofac Surg, 54 : 176-181, 1996 15) Nakaya Y, Nakamura T, Ishikawa H : Chewing rhythm in skeletal class III patients. J Jpn Orthod Soc, 56 : 170-179, 1997 (in Japanese 6) Youssef RE, Throckmorton GS, Ellis E, Sinn DP : Comparison of habitual masticatory cycles and muscle activity before and after orthognathic surgery. J Oral Maxillofac Surg, 55 : 699-707, 1997 24) Throckmorton GS, Finn RA, Bell WH : Biomechanics of differences in lower facial height. Am J Orthod, 77 : 410-420, 1980 18) Pruzansky SRM, Rickets B, Sarnat G, Engel MB : Cephalometric electromyographic and laminagraphic analysis of two cases of bilateral subcondylar osteotomv. Am J Orthod, 37 : 147, 1951 29) Tuinzing B, Greebe RB : Complications related to the intra-oral vertical ramus osteotomy. Int J Oral Surg, 14 : 319-324, 1985 30) Ueki K, Marukawa K, Shimada M, Nakagawa K, Alam S, Yamamoto E : Maxillary stability following Le Fort I osteotomy in combination with sagittal split ramus osteotomy and intraoral vertical ramus osteotomy : a comparative study between titanium miniplate and poly-L-lactic acid plate. J Oral Maxillofac Surg, 64 : 74-80, 2006 4) Shiratsuchi Y, Kouno K, Tashiro H : Evaluation of masticatory function following orthognathic surgical correction of mandibular prognathism. J Craniomaxillofac Surg, 19 : 299-303, 1991 1) Martis CS : Complications after mandibular sagittal split osteotomy. J Oral Maxillofac Surg, 442 : 101-107, 1984 3) Kobayashi T, Honma K, Nakajima T, Hanada K : Masticatory function in patients with mandibular prognathism before and after orthognathic surgery. J Oral Maxillofac Surg, 51 : 997-1001, 1993 37) Tadej G, Engstrom C, Borrman H, Christiansen EL : Mandibular condyle morphology in relation to malocclusions in children. Angle Orthod, 59 : 187-194, 1989 13) Shiratsuchi Y, Kouno K, Tashiro H : Evaluation of masticatory function following orthognathic surgical correction of mandibular prognathism. J Craniomaxillofac Surg, 19 : 299-303, 1991 14) Fujii T, Sugawara J, Kuwahara S, Bandai H, Mitani H, Kawamura H : Long-term postoperative evaluation of chewing rhythm in skeletal Cl III patients undergone surgical-orthodontic treatment. J Jpn Orthod Soc, 54 : 227-233, 1995 (in Japanese 32) Ingervall B, Minder C : Correlation between maximum bite force and facial morphology in children. Angle Orthod, 67 : 415-422, 1997 19) Ahlgren J : The silent period in the EMG of the jaw muscle during mastication and its relationship to tooth contact. Acta Odont Scand, 27 : 219-227, 1969 8) Ingervall B, Ridell A, Thilander B : Changes in activity of the temporal, masseter and lip muscles after surgical correction of mandibular prognathism. Int J Oral Surg, 8 : 290-300, 1979 26) Hanada K, Sawa S, Ryokawa H, Watanabe K, Shimizu Y, Tomii M, Fukuhara T, Tokiwa N, Hirose T, Kajikawa Y : The surgical and orthodontic approach to the skeletal class III malocclusions. J Jpn Orthod Soc, 34 : 96-115, 1975 (in Japanese 33) Nakajima A, Takahama Y : Functional assessment of abnormal occlusion. J Jpn Orthod Soc, 38 : 360-371, 1979 (in Japanese 35) Schmid W, Mongini F, Felisio A : A computer bases assessment of structural and displacement asymmetries of the mandible. Am J Orthod Dentofacial Orthop, 100 : 19-34, 1991 9) Iwase M, Sugimori M, Kurachi Y, Nagumo M : Changes in bite force and occlusal contacts in patients treated for mandibular prognathism by orthognathic surgery. J Oral Maxillofac Surg, 56 : 850-855, 1998 22) lizuka T, Ishikawa H : Normal standards for various cephalometric analysis in Japanese adults. J Jpn Orthod Soc, 16 : 4-12, 1957 (in Japanese |
| References_xml | – reference: 36) Pirttiniemi P, Kantomaa T, Lahtela P : Relationship between craniofacial and condyle path asymmetry in unilateral crossbite patients. Eur J Orthod, 12 : 408-413, 1990 – reference: 10) Kim YG, Oh SH : Effect of mandibular setback surgery on occlusal forces. J Oral Maxillofac Surg, 55 : 121-126, 1997 – reference: 29) Tuinzing B, Greebe RB : Complications related to the intra-oral vertical ramus osteotomy. Int J Oral Surg, 14 : 319-324, 1985 – reference: 27) Miyasaka T : Changes of masticatory muscle activity after surgical orthodontic treatment for mandibular protrusion. Kokubyo Gakkai Zasshi, 62 : 111-132, 1995 (in Japanese) – reference: 19) Ahlgren J : The silent period in the EMG of the jaw muscle during mastication and its relationship to tooth contact. Acta Odont Scand, 27 : 219-227, 1969 – reference: 12) Ellis E, Throckmorton GS, Sinn DP : Bite forces before and after surgical correction of mandibular prognathism. J Oral Maxillofac Surg, 54 : 176-181, 1996 – reference: 1) Martis CS : Complications after mandibular sagittal split osteotomy. J Oral Maxillofac Surg, 442 : 101-107, 1984 – reference: 2) Hara T, Sugawara J, Mitani H, Kawamura H : The changes of the masticatory efficiency following orthognathic surgery in skeletal class III patients : longitudinal study by means of ATP absorbance method. J Jpn Orthod Soc, 53 : 66-67, 1994 (in Japanese) – reference: 3) Kobayashi T, Honma K, Nakajima T, Hanada K : Masticatory function in patients with mandibular prognathism before and after orthognathic surgery. J Oral Maxillofac Surg, 51 : 997-1001, 1993 – reference: 33) Nakajima A, Takahama Y : Functional assessment of abnormal occlusion. J Jpn Orthod Soc, 38 : 360-371, 1979 (in Japanese) – reference: 34) Mew J : Comment on mandibular and facial asymmetries. Am J Orthod Dentofacial Orthop, 108 : 17A-18A, 1995 – reference: 11) Throckmorton GS, Buschang PH, Ellis E : Improvement of maximum occlusal forces after orthognathic surgery. J Oral Maxillofac Surg, 54 : 1080-1086, 1996 – reference: 20) Tanimoto K : An electromyographic study on bilateral partial osteotomy of mandibular body. Jpn J Oral Maxillofac Surg, 27 : 357-368, 1981 (in Japanese) – reference: 24) Throckmorton GS, Finn RA, Bell WH : Biomechanics of differences in lower facial height. Am J Orthod, 77 : 410-420, 1980 – reference: 14) Fujii T, Sugawara J, Kuwahara S, Bandai H, Mitani H, Kawamura H : Long-term postoperative evaluation of chewing rhythm in skeletal Cl III patients undergone surgical-orthodontic treatment. J Jpn Orthod Soc, 54 : 227-233, 1995 (in Japanese) – reference: 26) Hanada K, Sawa S, Ryokawa H, Watanabe K, Shimizu Y, Tomii M, Fukuhara T, Tokiwa N, Hirose T, Kajikawa Y : The surgical and orthodontic approach to the skeletal class III malocclusions. J Jpn Orthod Soc, 34 : 96-115, 1975 (in Japanese) – reference: 25) Sanborn RT : Difference between the facial skeletal pattern Class III malocclusion and normal occlusion. Angle Orthodont, 25 : 208-222, 1955 – reference: 21) Kohno S : Occlusion and muscle activity. In IshiokaY, Kobayashi Y, Hasegawa S, Kohno S, Hayashi T (eds.) : The Basics and Its Application of Oral and Maxillofacial Functional Analysis-How is ME Machinery used for Clinics?-, 1st ed. Tokyo, 1991, DENTAL DIAMOND CO., pp 208-217 (in Japanese) – reference: 6) Youssef RE, Throckmorton GS, Ellis E, Sinn DP : Comparison of habitual masticatory cycles and muscle activity before and after orthognathic surgery. J Oral Maxillofac Surg, 55 : 699-707, 1997 – reference: 31) Takahashi H, Ihara K, Noguchi N, Goto M, Katsuki T : Changes of masticatory function after sagittal split-ting ramus osteotomy-From just before operation to one year after-.Jpn J Jaw Deform, 9 : 157-166, 1999 (in Japanese) – reference: 9) Iwase M, Sugimori M, Kurachi Y, Nagumo M : Changes in bite force and occlusal contacts in patients treated for mandibular prognathism by orthognathic surgery. J Oral Maxillofac Surg, 56 : 850-855, 1998 – reference: 5) Takahashi Y, Kawamura H, Shinbo T, Kikuchi S, Hayashi S, Soya T, Sugawara J : Evaluation of sagittal splitting ramus osteotomy for mandibular prognathism-changes of masticatory function. Jpn J Oral Maxillofac Surg, 32 : 799-807, 1986 (in Japanese) – reference: 28) Tanimoto K : An electromyographic study on bilateral partial osteotomy of mandibular body. Jpn J Oral Maxillofac Surg, 27 : 357-368, 1981 (in Japanese) – reference: 13) Shiratsuchi Y, Kouno K, Tashiro H : Evaluation of masticatory function following orthognathic surgical correction of mandibular prognathism. J Craniomaxillofac Surg, 19 : 299-303, 1991 – reference: 22) lizuka T, Ishikawa H : Normal standards for various cephalometric analysis in Japanese adults. J Jpn Orthod Soc, 16 : 4-12, 1957 (in Japanese) – reference: 16) Grossman WJ, Greefield BF, Tiones DS : Electromyography as an aid in diagnosis and treatment analysis. Am J Orthod 47 : 481-497, 1961 – reference: 15) Nakaya Y, Nakamura T, Ishikawa H : Chewing rhythm in skeletal class III patients. J Jpn Orthod Soc, 56 : 170-179, 1997 (in Japanese) – reference: 17) Takahashi Y : An electromyographic study for mandibular prognathism indicated sagittal splitting of the mandibular ramus. Jpn J Oral Maxillofac Surg, 31 : 2101-2112, 1985 (in Japanese) – reference: 32) Ingervall B, Minder C : Correlation between maximum bite force and facial morphology in children. Angle Orthod, 67 : 415-422, 1997 – reference: 7) Raustia AM, Oikarinen KS : Changes in electric activity of masseter and temporal muscles after mandibular sagittal split osteotomy. Int J Oral Maxillofac Surg, 55 : 699-707, 1997 – reference: 37) Tadej G, Engstrom C, Borrman H, Christiansen EL : Mandibular condyle morphology in relation to malocclusions in children. Angle Orthod, 59 : 187-194, 1989 – reference: 23) Julien KC, Buschang PH, Throckmorton GS, Dechow PC : Normal masticatory performance in young adults and children. Arch Oral Biol, 41 : 69-75, 1996 – reference: 4) Shiratsuchi Y, Kouno K, Tashiro H : Evaluation of masticatory function following orthognathic surgical correction of mandibular prognathism. J Craniomaxillofac Surg, 19 : 299-303, 1991 – reference: 8) Ingervall B, Ridell A, Thilander B : Changes in activity of the temporal, masseter and lip muscles after surgical correction of mandibular prognathism. Int J Oral Surg, 8 : 290-300, 1979 – reference: 35) Schmid W, Mongini F, Felisio A : A computer bases assessment of structural and displacement asymmetries of the mandible. Am J Orthod Dentofacial Orthop, 100 : 19-34, 1991 – reference: 30) Ueki K, Marukawa K, Shimada M, Nakagawa K, Alam S, Yamamoto E : Maxillary stability following Le Fort I osteotomy in combination with sagittal split ramus osteotomy and intraoral vertical ramus osteotomy : a comparative study between titanium miniplate and poly-L-lactic acid plate. J Oral Maxillofac Surg, 64 : 74-80, 2006 – reference: 18) Pruzansky SRM, Rickets B, Sarnat G, Engel MB : Cephalometric electromyographic and laminagraphic analysis of two cases of bilateral subcondylar osteotomv. Am J Orthod, 37 : 147, 1951 |
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| SubjectTerms | electromyography (EMG) mandibular prognathism masticatory muscles surgical orthodontics |
| Title | Electromyographic Evaluation of Masticatory Muscles Following Surgical Orthodontics with Skeletal Mandibular Prognathism |
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