1
|
Lim HK, Song IS, Park JE, Choi WC, Hwang J, Choi YJ, Kim DK, Lee UL. Relation Between Masticatory Performance and Skeletal Properties in Patients With Skeletal Class III Malocclusion. J Craniofac Surg 2024:00001665-990000000-01372. [PMID: 38393303 DOI: 10.1097/scs.0000000000010056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 01/10/2024] [Indexed: 02/25/2024] Open
Abstract
This study aimed to measure masticatory performance (MP) using β-carotene gummy jelly to investigate its relationship with skeletal properties in decompensated patients diagnosed with skeletal class III malocclusion. The study included 78 patients (38 men and 40 women) diagnosed with skeletal class III malocclusion without temporomandibular joint disorder and periodontal disease. MP was measured using a new masticatory measuring device and β-carotene in the gummy jelly. Lateral and posteroanterior cephalograms were obtained, and skeletal properties (Me deviation, ANB, SNB, APDI, Wits, ODI, facial axis, body length, ramus length, SN-GoGn, anterior facial height, posterior facial height, saddle angle, articular angle, and gonial angle) were evaluated. MP differences according to age and sex and the effect of skeletal properties on MP were analyzed using multiple linear regression analysis. The MP of all patients was 3690.55±1428.77 mm², MP of the male group was 4043.05±1498.09 mm², and MP of the female group was 3355.68±1272.19 mm². Among the items investigated, the variable that affected MP was posterior facial height. Posterior facial height showed a positive correlation (P=0.022). There was no significant difference between MP and other skeletal properties (P>0.05). The severity of the hypodivergency in skeletal class III could affect MP. The relationship between facial asymmetry or skeletal relation and MP could not be explained in this study.
Collapse
Affiliation(s)
- Ho-Kyung Lim
- Department of Oral and Maxillofacial Surgery, Korea University Guro Hospital, Seoul, Korea
| | - In-Seok Song
- Department of Oral and Maxillofacial Surgery, Korea University Anam Hospital, Seoul, Korea
| | - Jung-Eun Park
- Department of Orthodontics, Dental Center, Chung-Ang University Hospital, Seoul, Korea
| | - Won-Cheul Choi
- Department of Orthodontics, Dental Center, Chung-Ang University Hospital, Seoul, Korea
| | - Jiyoung Hwang
- Department of Oral and Maxillofacial Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - Young-Jun Choi
- Department of Oral and Maxillofacial Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - Don-Kyu Kim
- Department of Physical Medicine and Rehabilitation, Chung-Ang University College of Medicine, Seoul, Korea
| | - Ui-Lyong Lee
- Department of Oral and Maxillofacial Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| |
Collapse
|
2
|
Tagore S, Reche A, Paul P, Deshpande M. Electromyography: Processing, Muscles' Electric Signal Analysis, and Use in Myofunctional Orthodontics. Cureus 2023; 15:e50773. [PMID: 38239516 PMCID: PMC10794812 DOI: 10.7759/cureus.50773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 12/19/2023] [Indexed: 01/22/2024] Open
Abstract
Electromyography, commonly known as EMG, utilizes superficial or needle electrodes to record and analyze the fundamental electrical characteristics of skeletal muscles, determining whether the muscles are contracting. The motor unit, which consists of a collection of group muscle fibers and the motor neurons that govern them, is the structural basis of EMG. Three types of electrode are used in EMG which are needle electrode, fine wire electrode, and surface electrode. A significant amount of literature indicates that the correction of muscle function affects the relationships between teeth within the same jaw and between the jaws on opposing sides. The mechanism of action in myofunctional appliance therapy is linked to neuromuscular and skeletal adaptations resulting from altered function in the orofacial region. Both myofunctional therapy and orthodontics aim to address abnormal muscular behavior, restore abnormal muscle activity, and maintain proper alignment in various areas, including the lips, lower jaw, and tongue. This knowledge is essential for functions such as swallowing, speaking, chewing, and respiration as well as for minimizing incorrect movements and positioning. This article aims to describe the application of surface EMG as a diagnosis tool for assessing muscle activities in various orthodontic disorders, such as class II malocclusion open bite, crossbite, maxillary constriction, cleft lip and palate (CLP), and temporomandibular dysfunction, in patients. The electrodes used in EMG can be utilized to detect bioelectric activity in the muscles of the jaws and abnormalities in jaw movement. Analyzing EMG data is vital for obtaining a comprehensive understanding of the masticatory muscle system.
Collapse
Affiliation(s)
- Shweta Tagore
- Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Amit Reche
- Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Priyanka Paul
- Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Mihika Deshpande
- Public Health Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| |
Collapse
|
3
|
Ornelas G, Bueno Garcia H, Bracken DJ, Linnemeyer-Risser K, Coleman TP, Weissbrod PA. Differentiation of Bolus Texture During Deglutition via High-Density Surface Electromyography: A Pilot Study. Laryngoscope 2023; 133:2695-2703. [PMID: 36734335 DOI: 10.1002/lary.30589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 10/26/2022] [Accepted: 12/03/2022] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Swallowing is a complex neuromuscular task. There is limited spatiotemporal data on normative surface electromyographic signal during swallow, particularly across standard textures. We hypothesize the pattern of electromyographic signal of the anterior neck varies cranio-caudally, that laterality can be evaluated, and categorization of bolus texture can be differentiated by high-density surface electromyography (HDsEMG) through signal analysis. METHODS An HDsEMG grid of 20 electrodes captured electromyographic activity in eight healthy adult subjects across 240 total swallows. Participants swallowed five standard textures: saliva, thin liquid, puree, mixed consistency, and dry solid. Data were bandpass filtered, underwent functional alignment of signal, and then placed into binary classifier receiver operating characteristic (ROC) curves. Muscular activity was visualized by creating two-dimensional EMG heat maps. RESULTS Signal analysis results demonstrated a positive correlation between signal amplitude and bolus texture. Greater differences of amplitude in the cranial most region of the array when compared to the caudal most region were noted in all subjects. Lateral comparison of the array revealed symmetric power levels across all subjects and textures. ROC curves demonstrated the ability to correctly classify textures within subjects in 6 of 10 texture comparisons. CONCLUSION This pilot study suggests that utilizing HDsEMG during deglutition can noninvasively differentiate swallows of varying texture noninvasively. This may prove useful in future diagnostic and behavioral swallow applications. LEVEL OF EVIDENCE 4 Laryngoscope, 133:2695-2703, 2023.
Collapse
Affiliation(s)
- Gladys Ornelas
- Department of Bioengineering, University of California San Diego, La Jolla, California, U.S.A
| | - Hassler Bueno Garcia
- Department of Bioengineering, University of California San Diego, La Jolla, California, U.S.A
| | - David J Bracken
- Department of Otolaryngology, University of California San Francisco, San Francisco, California, U.S.A
| | | | - Todd P Coleman
- Department of Bioengineering, University of California San Diego, La Jolla, California, U.S.A
| | - Philip A Weissbrod
- Department of Otolaryngology, University of California San Diego, La Jolla, California, U.S.A
| |
Collapse
|
4
|
Thymi M, Lobbezoo F, Aarab G, Ahlberg J, Baba K, Carra MC, Gallo LM, De Laat A, Manfredini D, Lavigne G, Svensson P. Signal acquisition and analysis of ambulatory electromyographic recordings for the assessment of sleep bruxism: A scoping review. J Oral Rehabil 2021; 48:846-871. [PMID: 33772835 PMCID: PMC9292505 DOI: 10.1111/joor.13170] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/07/2021] [Accepted: 03/17/2021] [Indexed: 12/14/2022]
Abstract
Background Ambulatory electromyographic (EMG) devices are increasingly being used in sleep bruxism studies. EMG signal acquisition, analysis and scoring methods vary between studies. This may impact comparability of studies and the assessment of sleep bruxism in patients. Objectives (a) To provide an overview of EMG signal acquisition and analysis methods of recordings from limited‐channel ambulatory EMG devices for the assessment of sleep bruxism; and (b) to provide an overview of outcome measures used in sleep bruxism literature utilising such devices. Method A scoping review of the literature was performed. Online databases PubMed and Semantics Scholar were searched for studies published in English until 7 October 2020. Data on five categories were extracted: recording hardware, recording logistics, signal acquisition, signal analysis and sleep bruxism outcomes. Results Seventy‐eight studies were included, published between 1977 and 2020. Recording hardware was generally well described. Reports of participant instructions in device handling and of dealing with failed recordings were often lacking. Basic elements of signal acquisition, for example amplifications factors, impedance and bandpass settings, and signal analysis, for example rectification, signal processing and additional filtering, were underreported. Extensive variability was found for thresholds used to characterise sleep bruxism events. Sleep bruxism outcomes varied, but typically represented frequency, duration and/or intensity of masticatory muscle activity (MMA). Conclusion Adequate and standardised reporting of recording procedures is highly recommended. In future studies utilising ambulatory EMG devices, the focus may need to shift from the concept of scoring sleep bruxism events to that of scoring the whole spectrum of MMA.
Collapse
Affiliation(s)
- Magdalini Thymi
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Ghizlane Aarab
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Jari Ahlberg
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | - Kazuyoshi Baba
- Department of Prosthodontics, Showa University School of Dentistry, Ohta-ku, Japan
| | - Maria Clotilde Carra
- UFR of Odontology Garanciere, Université de Paris and Service of Odontology, Rothschild Hospital (AP-HP), Paris, France
| | - Luigi M Gallo
- Clinic of Masticatory Disorders, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Antoon De Laat
- Department of Oral Health Sciences, Leuven, Belgium.,Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.,Department of Dentistry, University Hospital, Leuven, Belgium
| | - Daniele Manfredini
- Department of Biomedical Technologies, School of Dentistry, University of Siena, Siena, Italy
| | - Gilles Lavigne
- Faculty of Dental Medicine, Université de Montréal, Montreal, QC, Canada.,CIUSSS Nord Ile de Montreal, Center for Advance Research in Sleep Medicine & Stomatology, CHUM, Montreal, QC, Canada
| | - Peter Svensson
- Section of Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Aarhus Universitet Tandlageskolen, Aarhus, Denmark.,Faculty of Odontology, Malmø University, Malmø, Sweden
| |
Collapse
|
5
|
Chi JY, Halaki M, Ackermann BJ. Ergonomics in violin and piano playing: A systematic review. APPLIED ERGONOMICS 2020; 88:103143. [PMID: 32678769 DOI: 10.1016/j.apergo.2020.103143] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 04/03/2020] [Accepted: 05/02/2020] [Indexed: 06/11/2023]
Abstract
This systematic review aimed to evaluate whether muscle activity and playing-related musculoskeletal disorders are associated with musicians' anthropometrics and their instrument size or set-up during violin and piano performance. Studies were retrieved systematically from six databases on 1 April 2019 combined with hand searching results. The Appraisal tool for Cross-Sectional Studies (AXIS tool) was used to evaluate the methodological quality of the included papers. A total of twenty articles were identified. Most included studies focussed on either the adjustment of the shoulder rest in violinists, or the hand size in pianists. However, methodological quality was inconsistent. The electromyography data reported by the included studies were not appropriately processed and interpreted. Studies generally reported the use of a shoulder rest changes muscle activity and smaller hand size is correlated to increased playing-related musculoskeletal disorders incidence. However, no conclusions can be drawn due to heterogeneity and low quality of methodology in the available literature.
Collapse
Affiliation(s)
- Ju-Yang Chi
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Room 132, RC Mills A26, Sydney, New South Wales, 2006, Australia.
| | - Mark Halaki
- Discipline of Exercise and Sport Science, Faculty of Medicine and Health, The University of Sydney, 75 East Street, Lidcombe, New South Wales, 2141, Australia
| | - Bronwen J Ackermann
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Room 132, RC Mills A26, Sydney, New South Wales, 2006, Australia
| |
Collapse
|
6
|
Di Palma E, Tepedino M, Chimenti C, Tartaglia GM, Sforza C. Longitudinal effects of rapid maxillary expansion on masticatory muscles activity. J Clin Exp Dent 2017; 9:e635-e640. [PMID: 28512539 PMCID: PMC5429474 DOI: 10.4317/jced.53544] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 12/16/2016] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND To investigate the modifications induced by rapid maxillary expansion (RME) on the electromyographic (EMG) activities of the anterior temporal and superficial masseter muscles, in patients without pre-treatment EMG alterations. MATERIAL AND METHODS Twenty-one patients with unilateral posterior cross-bite selected from the orthodontic department of the University of L'Aquila (Italy), were enrolled. There was no control group in this study since each subject acted as a control of her/himself. Two surface EMG recordings were taken: T0 (before RME) and at T1 (3 month after the end of expansion). To verify the neuromuscular equilibrium, the EMG activities of both right and left masseter and anterior temporal muscles were recorded during a test of maximum clench. EMG indexes were compared by paired Student's t-test. RESULTS In both occasions, all indices showed a good symmetry between the right and left side masticatory muscles. No statistically significant differences were found between the two recordings. CONCLUSIONS In children without pre-treatment EMG alterations, no variations in standardized muscular activity after RME were found. The treatment did not alter the equilibrium of the masseter and temporal muscles. Key words:Rapid maxillary expansion, electromyography, masticatory muscles.
Collapse
Affiliation(s)
- Elena Di Palma
- DDS, PhD, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy
| | - Michele Tepedino
- DDS, PhD, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy
| | - Claudio Chimenti
- Professor, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy
| | - Gianluca M Tartaglia
- DDS, PhD, Department of Human Morphology, Functional Anatomy Research Center (FARC), Faculty of Medicine and Surgery, University of Milan, Italy
| | - Chiarella Sforza
- Professor, Department of Human Morphology, Functional Anatomy Research Center (FARC), Faculty of Medicine and Surgery, University of Milan, Italy
| |
Collapse
|
7
|
Herpich CM, Amaral AP, Leal-Junior ECP, Tosato JDP, Gomes CAFDP, Arruda ÉEC, Glória IPDS, Garcia MBS, Barbosa BRB, Rodrigues MS, Silva KL, El Hage Y, Politti F, Gonzalez TDO, Bussadori SK, Biasotto-Gonzalez DA. Analysis of laser therapy and assessment methods in the rehabilitation of temporomandibular disorder: a systematic review of the literature. J Phys Ther Sci 2015; 27:295-301. [PMID: 25642095 PMCID: PMC4305586 DOI: 10.1589/jpts.27.295] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 07/18/2014] [Indexed: 12/02/2022] Open
Abstract
The aim of the present study was to perform a systematic review of the literature on the
effects of low-level laser therapy in the treatment of TMD, and to analyze the use of
different assessment tools. [Subjects and Methods] Searches were carried out of the
BIREME, MEDLINE, PubMed and SciELO electronic databases by two independent researchers for
papers published in English and Portuguese using the terms: “temporomandibular joint laser
therapy” and “TMJ laser treatment”. [Results] Following the application of the eligibility
criteria, 11 papers were selected for in-depth analysis. The papers analyzed exhibited
considerable methodological differences, especially with regard to the number of sessions,
anatomic site and duration of low-level laser therapy irradiation, as well as irradiation
parameters, diagnostic criteria and assessment tools. [Conclusion] Further studies are
needed, especially randomized clinical trials, to establish the exact dose and ideal
parameters for low-level laser therapy and define the best assessment tools in this
promising field of research that may benefit individuals with signs and symptoms of
TMD.
Collapse
Affiliation(s)
- Carolina Marciela Herpich
- Postgraduate Program in Rehabilitation Sciences, Movement Analysis Research Support Center, University Nove de Julho (UNINOVE): Rua Profa Maria Jose Barone Fernandes, 300, Sao Paulo, SP, 02117-020, Brazil
| | - Ana Paula Amaral
- Postgraduate Program in Rehabilitation Sciences, Movement Analysis Research Support Center, University Nove de Julho (UNINOVE): Rua Profa Maria Jose Barone Fernandes, 300, Sao Paulo, SP, 02117-020, Brazil
| | - Ernesto Cesar Pinto Leal-Junior
- Postgraduate Program in Rehabilitation Sciences, Laboratory of Phototherapy in Sports and Exercise, University Nove de Julho (UNINOVE), Brazil
| | - Juliana de Paiva Tosato
- Postgraduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), Brazil
| | | | - Éric Edmur Camargo Arruda
- Postgraduate Program in Rehabilitation Sciences, Movement Analysis Research Support Center, University Nove de Julho (UNINOVE): Rua Profa Maria Jose Barone Fernandes, 300, Sao Paulo, SP, 02117-020, Brazil
| | - Igor Phillip Dos Santos Glória
- Postgraduate Program in Rehabilitation Sciences, Movement Analysis Research Support Center, University Nove de Julho (UNINOVE): Rua Profa Maria Jose Barone Fernandes, 300, Sao Paulo, SP, 02117-020, Brazil
| | - Marilia Barbosa Santos Garcia
- Postgraduate Program in Rehabilitation Sciences, Movement Analysis Research Support Center, University Nove de Julho (UNINOVE): Rua Profa Maria Jose Barone Fernandes, 300, Sao Paulo, SP, 02117-020, Brazil
| | - Bruno Roberto Borges Barbosa
- Postgraduate Program in Rehabilitation Sciences, Movement Analysis Research Support Center, University Nove de Julho (UNINOVE): Rua Profa Maria Jose Barone Fernandes, 300, Sao Paulo, SP, 02117-020, Brazil
| | | | - Katiane Lima Silva
- Graduation Phisical Therapy, Universidade Nove de Julho (UNINOVE), Brazil
| | - Yasmin El Hage
- Program in Rehabilitation Sciences, Movement Analysis Research Support Center, University Nove de Julho (UNINOVE), Brazil
| | - Fabiano Politti
- Program in Rehabilitation Sciences, Movement Analysis Research Support Center, University Nove de Julho (UNINOVE), Brazil
| | | | - Sandra Kalil Bussadori
- Postgraduate Program in Rehabilitation Sciences, Movement Analysis Research Support Center, University Nove de Julho (UNINOVE): Rua Profa Maria Jose Barone Fernandes, 300, Sao Paulo, SP, 02117-020, Brazil
| | - Daniela Aparecida Biasotto-Gonzalez
- Postgraduate Program in Rehabilitation Sciences, Movement Analysis Research Support Center, University Nove de Julho (UNINOVE): Rua Profa Maria Jose Barone Fernandes, 300, Sao Paulo, SP, 02117-020, Brazil
| |
Collapse
|
8
|
França ECL, Sousa CB, Aragão LC, Costa LR. Electromyographic analysis of masseter muscle in newborns during suction in breast, bottle or cup feeding. BMC Pregnancy Childbirth 2014; 14:154. [PMID: 24885762 PMCID: PMC4014087 DOI: 10.1186/1471-2393-14-154] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 04/26/2014] [Indexed: 11/10/2022] Open
Abstract
Background When breastfeeding is difficult or impossible during the neonatal period, an analysis of muscle activity can help determine the best method for substituting it to promote the child’s development. The aim of this study was to analyze the electrical activity of the masseter muscle using surface electromyography during suction in term newborns by comparing breastfeeding, bottle and cup feeding. Methods An observational, cross-sectional analytical study was carried out on healthy, clinically stable term infants, assigned to receive either breast, or bottle or cup feeding. Setting was a Baby Friendly accredited hospital. Muscle activity was analyzed when each infant showed interest in sucking using surface electromyography. Root mean square averages (RMS) recorded in microvolts were transformed into percentages (normalization) of the reference value. The three groups were compared by ANOVA; the “stepwise” method of the multiple linear regression analysis tested the model which best defined the activity of the masseter muscle in the sample at a significance level of 5%. Results Participants were 81 full term newborns (27 per group), from 2 to 28 days of life. RMS values were lower for bottle (mean 44.2%, SD 14.1) than breast feeding (mean 58.3%, SD 12.7) (P = 0.003, ANOVA); cup feeding (52.5%, SD 18.2%) was not significantly different (P > 0.05). For every gram of weight increase, RMS increased by 0.010 units. Conclusions Masseter activity was significantly higher in breastfed newborns than in bottle-fed newborns, who presented the lowest RMS values. Levels of masseter activity during cup-feeding were between those of breast and bottle feeding, and did not significantly differ from either group. This study in healthy full term neonates endorses cup rather than bottle feeding as a temporary substitute for breastfeeding.
Collapse
Affiliation(s)
| | | | | | - Luciane R Costa
- Health Sciences Graduate Program, Federal University of Goias, Goiania, GO, Brazil.
| |
Collapse
|
9
|
Farias BULD, Bianchini EMG, Paiva JBD, Neto JR. Muscular Activity in Class III Dentofacial Deformity. Cranio 2014; 31:181-9. [DOI: 10.1179/crn.2013.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
|
10
|
Ko EWC, Huang CS, Lo LJ, Chen YR. Alteration of masticatory electromyographic activity and stability of orthognathic surgery in patients with skeletal class III malocclusion. J Oral Maxillofac Surg 2013; 71:1249-60. [PMID: 23562358 DOI: 10.1016/j.joms.2013.01.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Revised: 01/02/2013] [Accepted: 01/02/2013] [Indexed: 11/16/2022]
Abstract
PURPOSE The purposes of this study were to 1) investigate longitudinal changes in electromyographic masticatory activity subsequent to orthognathic surgery (OGS) in patients with skeletal Class III malocclusion, and 2) compare masticatory muscle activity and skeletal factors in patients with stable versus relapsed mandibular positions after OGS. MATERIALS AND METHODS A consecutive series of patients with skeletal Class III malocclusion who underwent 2-jaw OGS (35 patients, 17 men and 18 women; age, 24.5 ± 5.0 yr) were included. Lateral cephalometric films were obtained preoperatively (T1), 1 month after OGS (T2), and at completion of orthodontic treatment (T3). Serial cephalometric tracings and analyses were obtained. Surface electromyograms of the anterior temporalis and masseter muscles were recorded at T1, T2, and T3 (6 mo after OGS). Resting tonus, maximum voluntary clench with habitual intercuspation and on cotton pads, and maximum muscle firing were evaluated. Percentage of overlapping coefficient and torque coefficient were calculated. Patients were categorized further into stable and relapse groups according to the sagittal relapse rate of mandibular setback. These surface electromyographic variables were compared between the 2 groups. RESULTS On average, the mandible showed a significant setback of 10.19 mm and a relapse of 1.12 mm (10.99%). Surgical relapse did not correlate with gender or genioplasty. Serial surface electromyographic data indicated a significant decrease from T1 to T2 that then recovered from T2 to T3. No significant difference between T1 and T3 was noted. Percentage of overlapping coefficient was significantly decreased after OGS. The torque coefficient did not differ significantly from T1 to T3. The relapse group (relapse, >11%; n = 15) had a greater resting tonus of the anterior temporalis muscle at T3, a larger percentage of overlapping coefficient at T1, and a greater maximum voluntary clench of the masseter muscles at all times than in the stable group (n = 20). The relapse group exhibited a greater decrease in facial height (2.18 mm) from T2 to T3 than did the stable group (0.5 mm). CONCLUSION A larger sagittal relapse of mandibular setback occurred in patients with greater masticatory muscle activity. Modifications in surgical design and overcorrection should be considered in patients with greater masticatory muscle activity before OGS.
Collapse
Affiliation(s)
- Ellen Wen-Ching Ko
- Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taipei, Taiwan.
| | | | | | | |
Collapse
|
11
|
Archer SK, Garrod R, Hart N, Miller S. Dysphagia in Duchenne Muscular Dystrophy Assessed Objectively by Surface Electromyography. Dysphagia 2012. [DOI: 10.1007/s00455-012-9429-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
12
|
MORE ABOUT TMD. J Am Dent Assoc 2012; 143:1074-6; author reply 1076-80. [DOI: 10.14219/jada.archive.2012.0030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
13
|
Swinnen E, Baeyens JP, Meeusen R, Kerckhofs E. Methodology of electromyographic analysis of the trunk muscles during walking in healthy subjects: a literature review. J Electromyogr Kinesiol 2011; 22:1-12. [PMID: 21622008 DOI: 10.1016/j.jelekin.2011.04.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 03/04/2011] [Accepted: 04/13/2011] [Indexed: 10/18/2022] Open
Abstract
PURPOSE To review and discuss the literature about the use of trunk muscle electromyography - including the use of surface or fine-wire electrodes, site of application and muscle selection - during gait analysis in healthy subjects. METHODS The databases Pubmed, Web of Knowledge and Cochrane Library were searched. Articles were included when EMG activity of at least one trunk muscle was measured in healthy subjects during walking. RESULTS In the 33 selected articles 491 healthy subjects walked with different velocities on a treadmill and/or overground. The activity of the M. erector spinae, M. multifidus, M. obliquus externus and internus, M. rectus abdominus, M. trapezius, M. latissimus dorsi, M. transversus abdominus, M. iliopsoas and M. quadrates lumborum was measured. Twenty-nine studies used surface electrodes, one study fine-wire electrodes, and the other three studies used a combination. There is no consensus on the exact placement site of the electrodes. CONCLUSION Surface electrodes were used more often than fine-wire electrodes and the descriptions of the electrode locations were mostly vague and not consistent among the different studies. There is need for further research to make specific recommendations about the type of electrodes in combination with the optimal locations of application of these electrodes.
Collapse
Affiliation(s)
- Eva Swinnen
- Vrije Universiteit Brussel, Faculty of Physical Education and Physiotherapy, Advanced Rehabilitation Technology and Science (ARTS), Belgium.
| | | | | | | |
Collapse
|
14
|
|
15
|
Castroflorio T, Bracco P, Farina D. Surface electromyography in the assessment of jaw elevator muscles. J Oral Rehabil 2008; 35:638-45. [PMID: 18466277 DOI: 10.1111/j.1365-2842.2008.01864.x] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Surface electromyography (EMG) allows the non-invasive investigation of the bioelectrical phenomena of muscular contraction. The clinical application of surface EMG recordings has been long debated. This paper reviews the main limitations and the current applications of the surface EMG in the investigation of jaw elevator muscles. Methodological factors associated with the recording of the surface EMG may reduce the reliability and sensitivity of this technique and may have been the cause of controversial results reported in different studies. Despite these problems, several clinical applications of surface EMG in jaw muscles are promising. Moreover, technological advances in signal detection and processing have improved the quality of the information extracted from the surface EMG and furthered our understanding of the anatomy and physiology of the stomatognathic apparatus.
Collapse
Affiliation(s)
- T Castroflorio
- Department of Biomedical Sciences and Human Oncology, Specialization School of Orthodontics, University of Turin, Turin, Italy.
| | | | | |
Collapse
|