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Kothari SF, Devendran A, Kumar A, de Caxias FP, Svensson P. Signal to noise ratio of masticatory muscle activity of functional and non-functional oral tasks. J Oral Rehabil 2024; 51:1599-1609. [PMID: 38837445 DOI: 10.1111/joor.13714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 03/02/2024] [Accepted: 04/15/2024] [Indexed: 06/07/2024]
Abstract
BACKGROUND Electromyographic activity (EMG) of masticatory muscles during wakefulness is understudied. It is unclear if single channel ambulatory EMG devices are sensitive enough to detect masticatory muscle activity (MMA) during wakefulness. OBJECTIVES To compare the MMA of various oral tasks recorded with a single channel EMG device ((Grindcare4-datalogger Prototype device) (GC4-β)) and a conventional EMG (cEMG) device. METHODS EMG activity of 30 standardised oral tasks was recorded unilaterally from the masseter and anterior temporalis muscle in 24 healthy volunteers using GC4-β and a cEMG device. To compare the EMG data, signal-to-noise ratios (SNR) were calculated as a way to normalise EMG activity across tasks. Analysis of variance was used to compare the SNR between the devices, muscles and oral tasks. RESULTS SNR measured from GC4-β was overall significantly higher than the cEMG device (p =.001). The SNR for maximum voluntary contraction (MVC) was significantly higher than all other tasks (p <.001). SNR for temporalis with GC4-β was significantly higher for MVC, hard food, soft food, gum chewing (dominant side), rhythmic clenching and upper lip biting compared to the cEMG device (p <.021). The SNR for masseter with GC4-β was significantly higher for hard food and gum chewing (dominant side), rhythmic clenching, rhythmic biting of an object and yawning compared to the cEMG device (p <.022). CONCLUSIONS This study provides novel insight into the EMG patterns of numerous oral tasks enhancing knowledge of physiological differences between the masticatory muscles. Further, single channel EMG devices can effectively measure the EMG activity of various oral tasks during wakefulness.
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Affiliation(s)
- Simple Futarmal Kothari
- Section for Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
- Scandinavian Center for Orofacial Neurosciences (SCON), Aarhus, Denmark
- Hammel Neurorehabilitation and University Research Clinic, Hammel, Denmark
| | - Anupriyadarshini Devendran
- Section for Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Abhishek Kumar
- Scandinavian Center for Orofacial Neurosciences (SCON), Aarhus, Denmark
- Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
- Academic Centre for Geriatric Dentistry, Stockholm, Sweden
| | - Fernanda P de Caxias
- Department of Dental Materials and Prosthodontics, São Paulo State University (UNESP), School of Dentistry, Araçatuba, Brazil
| | - Peter Svensson
- Section for Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
- Scandinavian Center for Orofacial Neurosciences (SCON), Aarhus, Denmark
- Department of Orofacial Pain and Jaw Function, Faculty of Odontology, Malmö University, Malmö, Sweden
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De la Torre Canales G, Poluha RL, Bonjardim LR, Ernberg M, Conti PCR. Botulinum toxin-A effects on pain, somatosensory and psychosocial features of patients with refractory masticatory myofascial pain: a randomized double-blind clinical trial. Sci Rep 2024; 14:4201. [PMID: 38378855 PMCID: PMC10879180 DOI: 10.1038/s41598-024-54906-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 02/18/2024] [Indexed: 02/22/2024] Open
Abstract
The antinociceptive effect of BoNT-A have been well documented in animal studies; however, results of few but well-designed randomized placebo-controlled clinical trials about BoNT-A efficacy in masticatory myofascial pain (MFP) are inconsistent. Therefore, the present randomized, double-blind, placebo-controlled clinical trial evaluated the efficacy of BoNT-A in patients with refractory MFP. Twenty-eight patients with pain reduction of less than 30% despite conservative treatment and with an average pain intensity of > 50 mm on the visual analogue scale (VAS) participated. Patients were randomly assigned to receive a total of 80 U of BoNT-A or saline solution (SS) injected into the masseter and anterior temporalis muscles. Pain intensity (VAS), quantitative sensory testing (QST), conditioned pain modulation (CPM), and psychosocial status were examined. Follow-up was performed at 1 and 6 months. For repeated-measure comparisons between evaluation times, Friedman test with Bonferroni correction was used for pain and somatosensory variables and the Wilcoxon test for the psychosocial variables. The Mann-Whitney test was used for all comparisons between groups. The BoNT-A group had a significant decrease in pain intensity at follow-ups compared with the SS group (p < 0.001). QST assessment revealed higher pressure pain threshold values in the masseter muscle for BoNT-A group compared to SS (p < 0.03) at all follow-ups. No differences were found for mechanical pain threshold and wind-up ratio values (p > 0.05) in the entire study. The BoNT-A group presented the most efficient CPM effect (p < 0.03) only at the 1 month follow-up in the masseter muscle. There was a significant time effect for BoNT-A in all psychosocial variables (p < 0.05) and a drug effect in the Central Sensitization Inventory (p < 0.01), Pittsburgh Sleep Quality Index (p < 0.004), and Healthy Survey 36 (p < 0.05) at 6 months follow-up. The study demonstrates that a single injection-session of BoNT-A has positive effects on the hall pain spectrum of patients with refractory masticatory myofascial pain.
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Affiliation(s)
- Giancarlo De la Torre Canales
- Division of Oral Rehabilitation, Department of Dental Medicine, Karolinska Institutet, and The Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden.
- Egas Moniz Center for Interdisciplinary Research (CiiEM), Egas Moniz School of Health & Science, Caparica, Almada, Portugal.
- Bauru Orofacial Pain Group, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, São Paulo, Brazil.
| | - Rodrigo Lorenzi Poluha
- Department of Dentistry, State University of Maringá, Paraná, Brazil
- Bauru Orofacial Pain Group, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Leonardo Rigoldi Bonjardim
- Bauru Orofacial Pain Group, Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, São Paulo, Brazil
- Bauru Orofacial Pain Group, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Malin Ernberg
- Division of Oral Rehabilitation, Department of Dental Medicine, Karolinska Institutet, and The Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden
| | - Paulo César Rodrigues Conti
- Bauru Orofacial Pain Group, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, São Paulo, Brazil
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Barragán Nuñez MI, Flores DM, DE LA Torre Canales G, Quevedo HMD, Conti PR, Costa YM, Bonjardim LR. Influence of awake bruxism behaviors on fatigue of the masticatory muscles in healthy young adults. Braz Oral Res 2023; 37:e080. [PMID: 37531516 DOI: 10.1590/1807-3107bor-2023.vol37.0080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 03/17/2023] [Indexed: 08/04/2023] Open
Abstract
The present cross-sectional study aimed to analyze the relationship between awake bruxism and fatigue of masticatory muscles in healthy young adults. For this purpose, 121 graduate students participated in this study. Frequency of awake bruxism was collected for 7 consecutive days by ecological momentary assessment (EMA) using an online survey (mentimeter). Muscle fatigue was tested one day after EMA assessment, which consisted of voluntarily and continuously clenching at 30% (kgf/cm2) of maximum bite force (MBF) until exhaustion. The percentage of change in MBF after the clenching task, as compared to the MBF before the clenching task was measured. The average frequency of awake bruxism was 45.5% during 7 days. Sustained clenching resulted in a significant reduction in MBF values in the total sample (p < 0.05). Nevertheless, no significant correlation was found between frequency of awake bruxism behaviors and percent of change in MBF and endurance time during the fatigue test. Therefore, it can be concluded that young healthy adults present a relatively high frequency of awake bruxism behaviors that do not seem to impact the degree of masticatory muscle fatigue.
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Affiliation(s)
| | - Dyanne Medina Flores
- Universidade de São Pulo - USP, Bauru School of Dentistry, Department of Prosthodontics, Bauru, SP, Brazil
| | - Giancarlo DE LA Torre Canales
- Egas Moniz - Cooperativa de Ensino Superior, Centro de Investigação Interdisciplinar Egas Moniz, Clinical Research Unit, Caparica, Portugal
| | - Henrique Müller de Quevedo
- Universidade de São Pulo - USP, Bauru School of Dentistry, Department of Prosthodontics, Bauru, SP, Brazil
| | - Paulo Rodrigues Conti
- Universidade de São Pulo - USP, Bauru School of Dentistry, Department of Prosthodontics, Bauru, SP, Brazil
| | - Yuri Martins Costa
- Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Department of Biosciences, Piracicaba, SP, Brazil
| | - Leonardo Rigoldi Bonjardim
- Universidade de São Paulo - USP, Bauru School of Dentistry, Department of Biological Sciences, Bauru, SP, Brazil
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Martins IM, Alonso LS, Vale MP, Abreu LG, Serra-Negra JM. Association between the severity of possible sleep bruxism and possible awake bruxism and attrition tooth wear facets in children and adolescents. Cranio 2022:1-7. [PMID: 35876686 DOI: 10.1080/08869634.2022.2102708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
OBJECTIVE To evaluate the association between the severity of possible sleep bruxism (PSB) and possible awake bruxism (PAB) and attrition tooth wear facets (ATWF) in children/adolescents. METHODS Four hundred-thirty-four children/adolescents enrolled in schools in Lavras, Brazil, participated in this cross-sectional study. Caregivers answered a questionnaire about their childrens' PSB. Children/adolescents answered a questionnaire about the occurrence of PAB. RESULTS ATWF among individuals without PSB and PAB was lower than those with moderate/severe PSB (p = 0.038) and moderate/severe PAB (p = 0.003). ATWF in anterior teeth was lower among individuals without PSB compared to those with mild (p = 0.015) and moderate/severe PSB (p = 0.032). ATWF in posterior teeth was lower among individuals without PAB compared to those with mild (p = 0.046) and moderate/severe PAB (p = 0.017). CONCLUSION The number of attrition tooth wear facets is proportional to the severity of PSB and PAB.
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Affiliation(s)
- Isabela Melo Martins
- Department of Pediatric Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizont, Brazil
| | - Letícia Silva Alonso
- Department of Pediatric Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizont, Brazil
| | - Miriam Pimenta Vale
- Department of Pediatric Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizont, Brazil
| | - Lucas Guimarães Abreu
- Department of Pediatric Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizont, Brazil
| | - Júnia Maria Serra-Negra
- Department of Pediatric Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizont, Brazil
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Donnarumma V, Ohrbach R, Simeon V, Lobbezoo F, Piscicelli N, Michelotti A. Association between waking-state oral behaviours, according to the oral behaviors checklist, and TMD subgroups. J Oral Rehabil 2021; 48:996-1003. [PMID: 34192368 PMCID: PMC8457156 DOI: 10.1111/joor.13221] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/27/2021] [Accepted: 06/24/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To assess the association between waking-state oral behaviours and temporomandibular disorder (TMD) subgroups and to develop new scoring methods for the Oral Behavior Checklist (OBC). METHODS Patients with any TMD diagnosis, according to the diagnostic criteria for TMD (DC/TMD), were divided into subgroups: 'Dysfunctional-TMD' (n = 70), only mechanical dysfunction; 'Painful-TMD' (n = 204), only myalgia, arthralgia or both; and 'Painful-Dysfunctional TMD' (n = 95), combined pain and dysfunction. A group of individuals without TMD, 'Non-TMD' (n = 374), was used for testing associations. Participants completed the OBC. An exploratory factor analysis, followed by a confirmatory factor analysis of the OBC responses, identified 2 major factors, named non-functional activities (NFA) and functional activities (FA). Component total scores were computed. Differences among subgroups for OBC-MS (mean score) and NFA and FA factor scores were estimated using one-way ANOVA and Tukey post hoc tests. Significance was set at p < .05. RESULTS The OBC-MS in Non-TMD, Painful-TMD and Painful-Dysfunctional TMD subgroups was higher than in the Dysfunctional-TMD subgroup (p ≤ .001). NFA in Painful-TMD and Painful-Dysfunctional TMD subgroups were higher than in the Non-TMD group (p < .05); NFA in the Dysfunctional-TMD subgroup were lower than in the Painful-TMD subgroup (p = .034). In contrast, FA in Painful-TMD, Dysfunctional-TMD and Painful-Dysfunctional TMD subgroups were lower than in the Non-TMD group (p < .0001). CONCLUSIONS A new scoring method for the OBC results in item reduction and creation of meaningful subscales for functional and non-functional behaviours, which are differentially associated with painful and dysfunctional TMDs. This may help clinicians to better tailor treatment for the management of subtypes of TMD patients.
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Affiliation(s)
- Valeria Donnarumma
- Division of Orthodontics, Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples 'Federico II', Naples, Italy
| | - Richard Ohrbach
- Department of Oral Diagnostic Sciences, University at Buffalo, Buffalo, NY, USA
| | - Vittorio Simeon
- Medical Statistics Unit, Department of Mental Health and Preventive Medicine, University of Campania 'Luigi Vanvitelli', Naples, Italy
| | - Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Noemi Piscicelli
- Division of Orthodontics, Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples 'Federico II', Naples, Italy
| | - Ambrosina Michelotti
- Division of Orthodontics, Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples 'Federico II', Naples, Italy
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Kothari SF, Visser M, Timmerman K, Baad-Hansen L, Koutris M, Lobbezoo F, Svensson P. Painful and non-painful symptoms evoked by experimental bracing and thrusting of the mandible in healthy individuals. J Oral Rehabil 2021; 48:1004-1012. [PMID: 34191303 DOI: 10.1111/joor.13222] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 05/06/2021] [Accepted: 06/21/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Bruxism may involve bracing and thrusting of the mandible, in addition to clenching or grinding of the teeth. It is unclear how bracing and thrusting may contribute to potential musculoskeletal symptoms associated with bruxism. OBJECTIVE To examine the effect of experimental bracing and thrusting of the mandible on the development of musculoskeletal symptoms in healthy volunteers. METHODS Thirty healthy volunteers performed six trials of 5 min of repeated bracing and thrusting of the mandible. Bracing involved forcefully maintaining maximum protruded position (5 s with 1 s rest in between), whereas thrusting involved forcefully moving the mandible in a forward direction and back (1 Hz). The participants rated pain, unpleasantness, soreness, fatigue, tension, stiffness, stress and headache on 10-cm visual analogue scales (VAS) before, immediately and 24 h after the tasks. Pain drawings were obtained and maximum voluntary protrusive force (MVPF) was determined before and after the tasks. The outcome parameters for each task were compared between the time points. RESULTS There was a significant increase in the VAS scores (2-4/10) of pain, unpleasantness, soreness, fatigue, tension, stiffness and stress immediately following the tasks compared to baseline and 24 h after the tasks (p < .008). Pain was frequently reported in masseter muscles. MVPF values were significantly higher immediately (p < .001) and 24 h after thrusting (p < .001) and bracing (p = .012) tasks compared to the baseline. CONCLUSIONS Experimental bracing and thrusting of the mandible evoked transient, mild-to-moderate levels of muscle pain, fatigue, tension and stiffness and increased unpleasantness and stress scores in healthy volunteers.
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Affiliation(s)
- Simple Futarmal Kothari
- Section of Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark.,Scandinavian Center for Orofacial Neurosciences (SCON), Aarhus, Denmark.,Hammel Neurorehabilitation Centre and University Research Clinic, Hammel, Denmark
| | - Meike Visser
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Kimberley Timmerman
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Lene Baad-Hansen
- Section of Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark.,Scandinavian Center for Orofacial Neurosciences (SCON), Aarhus, Denmark
| | - Michail Koutris
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Peter Svensson
- Section of Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark.,Scandinavian Center for Orofacial Neurosciences (SCON), Aarhus, Denmark.,Department of Orofacial Pain and Jaw Function, Faculty of Odontology, Malmӧ University, Malmӧ, Sweden
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Imbriglio TV, Moayedi M, Freeman BV, Tenenbaum HC, Thaut M, Cioffi I. Music Modulates Awake Bruxism in Chronic Painful Temporomandibular Disorders. Headache 2020; 60:2389-2405. [PMID: 32997813 DOI: 10.1111/head.13971] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/15/2020] [Accepted: 08/16/2020] [Indexed: 12/27/2022]
Abstract
OBJECTIVE In this experimental study, we aimed to determine whether guided music listening (GML) - a music intervention based on models of mood mediation and attention modulation - modulates masticatory muscle activity and awake bruxism in subjects with chronic painful muscular temporomandibular disorders (TMD myalgia, mTMD), a condition causing a significant burden to patients, their families, and healthcare systems. BACKGROUND Awake bruxism - a stress behavior characterized by clenching of the teeth - is a strong contributor to chronic mTMD. GML modulates psychological stress and motor responses and could thus reduce muscle activity in chronic musculoskeletal conditions, including mTMD. METHODS We recorded the electromyographic (EMG) activity in the right masseter of 14 women with chronic (>6 months) mTMD (median [IQR] = 39.5.3 [24.3] years) and 15 pain-free women (median [IQR] = 30.0 [3.5] years) during a GML session, including 3 music (stressful, relaxing, and participants' favorite music) and a no-music (pink noise) control blocks, each lasting 15 minutes. We measured the motor effort of the right masseter relative to the participants' maximum voluntary contraction (MVC), the muscular effort to maintain mandibular posture (EMGposture ), and to produce spontaneous awake bruxism episodes (EMGbruxism ), and the duration and frequency of spontaneous awake bruxism episodes. We tested between-group and within-group (between blocks) differences, as well as the effect of the interaction group by experimental block on these outcome measures. RESULTS In both groups, EMGposture was significantly affected by the interaction group by experimental block (P < .001). Compared to pink noise [mean (95% CI); mTMD: 2.2 (1.6-2.8) %MVC; Controls: 1.1 (0.5-1.7) %MVC], EMGposture increased during the stressful music block [contrast estimate (95% CI); mTMD: +0.8 (0.7-0.8) %MVC; Controls: +0.3 (0.3-0.4) %MVC; both P < .001], and decreased during the relaxing [mTMD: -0.4 (-0.5 to -0.4) %MVC; Controls: -0.3 (-0.4 to -0.3) %MVC; both P < .001] and favorite [mTMD: -0.5 (-0.6 to -0.5) %MVC; Controls: -0.5 (-0.5 to -0.4) %MVC; both P < .001] music blocks. EMGposture was greater in mTMD individuals than controls during the favorite music [contrast estimate (95% CI): +1.1 (0.2-1.9) %MVC; P = .019] and the pink noise [+1.1 (0.2-2.0) %MVC; P = .014] blocks. EMGbruxism was significantly affected by the interaction group by experimental block (P < .001). In mTMD participants, compared to the pink noise block [mean (95% CI); 23.8 (16.0-31.6) %MVC], EMGbruxism increased during the stressful music block [contrast estimate (95% CI); +10.2 (8.6-11.8) %MVC], and decreased during the relaxing [-6.2 (-8.1 to -4.3) %MVC; P < .001] and favorite [-10.2 (-12.2 to -9.1) %MVC; P < .001] music blocks. These effects were not observed in the control group [mean (95% CI); pink noise: 19.3 (10.9-27.6); stressful: 21.2 (12.9-29.4) %MVC; relaxing: 21.6 (13.3-29.9) %MVC; favorite: 24.2 (15.8-32.7) %MVC; all P > .05]. EMGbruxism was significantly greater in mTMD participants than controls during the stressful music block [contrast estimate (95% CI): +12.9 (1.6-24.2) %MVC; P = .026). GML did not affect the duration or the frequency of awake bruxism in either group (median [IQR], mTMD: 23.5 [96.7] s, range 1-1300 seconds; Controls: 5.5 [22.5], range 0-246 seconds; P = .108). The frequency of awake bruxism episodes was greater in the mTMD group compared to controls only during the pink noise block (median [IQR], mTMD: 5 [15.3] episodes, range 0-62 episodes; Controls: 1 [3] episode, range 0-27 episodes; P = .046). No significant between-group differences were found in either the overall time spent engaging in awake bruxism (median [IQR], mTMD: 23.5 [96.7] s, range 1-1300 seconds; Controls: 5.5 [22.5], range 0-246 seconds; P = .108), or during each block (all P > .05). CONCLUSIONS In subjects with chronic mTMD, relaxing music and the individual's favorite music decreased the muscular effort during spontaneous awake bruxism episodes by 26% and 44% (relative changes), respectively. In contrast, stressful music increases it by about 43%. Because of its positive effects on awake bruxism, GML with selected music could be a promising and non-invasive component of a multimodal approach for the management of chronic mTMD.
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Affiliation(s)
- Tina Veronica Imbriglio
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada.,Centre for Multimodal Sensorimotor and Pain Research, University of Toronto, Toronto, ON, Canada
| | - Massieh Moayedi
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada.,Centre for Multimodal Sensorimotor and Pain Research, University of Toronto, Toronto, ON, Canada.,University of Toronto Centre for the Study of Pain, University of Toronto, Toronto, ON, Canada.,Department of Dentistry, Centre for Advanced Dental Research and Care, Mount Sinai Hospital, Toronto, ON, Canada
| | - Bruce Victor Freeman
- Department of Dentistry, Centre for Advanced Dental Research and Care, Mount Sinai Hospital, Toronto, ON, Canada
| | - Howard Charles Tenenbaum
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada.,Department of Dentistry, Centre for Advanced Dental Research and Care, Mount Sinai Hospital, Toronto, ON, Canada
| | - Michael Thaut
- Faculty of Music, University of Toronto, Toronto, ON, Canada
| | - Iacopo Cioffi
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada.,Centre for Multimodal Sensorimotor and Pain Research, University of Toronto, Toronto, ON, Canada.,University of Toronto Centre for the Study of Pain, University of Toronto, Toronto, ON, Canada.,Department of Dentistry, Centre for Advanced Dental Research and Care, Mount Sinai Hospital, Toronto, ON, Canada
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8
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Haggiag A, Speciali JG. A new biofeedback approach for the control of awake bruxism and chronic migraine headache: utilization of an awake posterior interocclusal device. ARQUIVOS DE NEURO-PSIQUIATRIA 2020; 78:397-402. [PMID: 32756859 DOI: 10.1590/0004-282x20200031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 02/29/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The relationship of bidirectional comorbidity between chronic migraine and pain in the cephalic segment led us to evaluate the improvement in reducing the pain in patients diagnosed with chronic migraine headache and awake bruxism, when undergoing treatment with a partial posterior interocclusal device designed for the management and control of awake bruxism through biofeedback. METHODS Seventy-four patients were evaluated during the following periods: pretreatment, seven, thirty, ninety, one hundred and eighty days, and one year. The evaluation was carried out by measuring the pain in the pretreatment period and pain reduction after awake bruxism treatment, using clinical evaluation and numerical scales for pain. RESULTS Most of the patients who complained of headache migraine pain, masticatory myofascial pain, temporomandibular joint and neck pain experienced a significant reduction in overall pain, including headaches, between t0 and t30 (p<0.0001). After 30 days of using the device, it was observed that the improvement remained at the same level without any recurrence of pain up to t90. At t180 and t360, it was observed that even with the device withdrawal (at t90) the improvement remained at the same level. CONCLUSION The utilization of a posterior interocclusal device designed for the management and control of awake bruxism through biofeedback seems to contribute to the reduction of pain (including migraine headache) in the majority of patients, and, even with the device withdrawal (at t90), the improvement remained at the same level, suggesting the patients succeeded in controlling their awake bruxism and consequently the pains.
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Affiliation(s)
- Alain Haggiag
- Dentistry Division, Hospital das Clínicas, Universidade de São Paulo, São Paulo, SP, Brazil
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Al Sayegh S, Vasilatou I, Kumar A, Al Barwari C, Fredriksson L, Grigoriadis A, Christidis N. Experimental pain and fatigue induced by excessive chewing. BMC Oral Health 2020; 20:179. [PMID: 32600327 PMCID: PMC7322929 DOI: 10.1186/s12903-020-01161-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 06/08/2020] [Indexed: 12/18/2022] Open
Abstract
Background The study was aiming to optimize excessive gum chewing as an experimental model to induce jaw muscle pain and fatigue similar to those in painful TMDs with durations that would allow immediate investigations of jaw-motor function. Further, if any sex differences would be detected in the expression of pain. Methods This randomized, double blinded study included 31 healthy participants of both sexes. A standardized chewing protocol of either 40- or 60-min of chewing was used with a wash-out period of 1 week. Subjective fatigue, pain characteristics and functional measures were assessed. For statistical analyses, Wilcoxon Signed Rank test, Mann–Whitney Rank Sum test and Friedman’s ANOVA with Tukey post-hoc test were used. Results High subjective fatigue scores that lasted up to 20 min after the end of the trial were significantly induced both in the 40- and 60-min chewing trials (P < 0.001*). Significant but mild pain was induced only in the 60-min trial (P = 0.004*) and only in men (P = 0.04*). Also, the induced pain area was significantly bigger in the 60-min trial (P = 0.009*). However, this increase in pain and pain area did not last to the first 10-min follow-up. There were no significant differences neither between the 40- and 60-min chewing trials, except regarding the pain area (P = 0.008*), nor between the sexes. Conclusion Taken together, excessive chewing in its current form does not seem to be a proper pain experimental model. The model needs further adjustments in order to mimic TMD-pain especially in women and to prolong the pain duration.
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Affiliation(s)
- Samaa Al Sayegh
- Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Box 4046, SE-141 04, Huddinge, Sweden. .,Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden.
| | - Ioanna Vasilatou
- Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Box 4046, SE-141 04, Huddinge, Sweden
| | - Abhishek Kumar
- Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Box 4046, SE-141 04, Huddinge, Sweden.,Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden
| | - Ceva Al Barwari
- Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Box 4046, SE-141 04, Huddinge, Sweden
| | - Lars Fredriksson
- Department of Clinical Oral Physiology at the Eastman Institute, Folktandvården Stockholms län AB, SE-113 24, Stockholm, Sweden
| | - Anastasios Grigoriadis
- Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Box 4046, SE-141 04, Huddinge, Sweden.,Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden
| | - Nikolaos Christidis
- Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Box 4046, SE-141 04, Huddinge, Sweden.,Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden
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10
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Oleksy Ł, Wojciechowska M, Mika A, Antos E, Bylina D, Kielnar R, Pruszczyński B, Stolarczyk A. Normative values for Glazer Protocol in the evaluation of pelvic floor muscle bioelectrical activity. Medicine (Baltimore) 2020; 99:e19060. [PMID: 32000454 PMCID: PMC7004594 DOI: 10.1097/md.0000000000019060] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The aim of the study was to evaluate pelvic floor muscle bioelectrical activity in healthy, young, and nulliparous women, and to present normative values for all phases and parameters measured with the Glazer Protocol.In this study, 96 healthy, young, nulliparous women (age 22-27 years; 168.6 ± 5.1 cm; 57.1 ± 11.8 kg) were tested. The bioelectrical activity of the pelvic floor muscles was collected using an endovaginal electrode with the Glazer Protocol, which included the following series of muscles contractions and relaxations: pre-baseline rest, phasic contractions, tonic contractions, isometric contractions for muscle endurance evaluation, and post-baseline rest.The following normative values of the bioelectrical signal for all phases of the Glazer Protocol were calculated: mean, minimal, and maximal values, 95% confidence interval, standard deviation, 95% standard deviation confidence interval, variance, coefficient of variation, and standard error of measurement. Average Mean Amplitude (μV) was as follows: pre-baseline rest (6.26 ± 3.33 μV), phasic contractions (49.76 ± 26.44 μV), tonic contractions (37.05 ± 25.99 μV), endurance contraction (16.10 ± 6.68 μV), and post-baseline rest (6.93 ± 3.99 μV).This study was the first in which normative values for all phases of the Glazer Protocol were reported. This protocol is very often used in electromyography devices as a tool for pelvic floor muscle assessment. Due to the fact that the interpretation of the pelvic floor muscle evaluation is complex and difficult, the authors believe that the normative values proposed in this study allow for comprehensive interpretation of this test (both qualitatively and quantitatively) and provide a reference point for parameters measured in women with different pelvic floor dysfunctions.
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Affiliation(s)
- Łukasz Oleksy
- Physiotherapy and Sports Centre, Rzeszow University of Technology
- Oleksy Medical & Sports Sciences
| | - Małgorzata Wojciechowska
- Faculty of Rehabilitation, Department of Clinical Nursing, Józef Pilsudski University of Physical Education in Warsaw
| | - Anna Mika
- Department of Clinical Rehabilitation, University of Physical Education in Krakow
| | - Elżbieta Antos
- Faculty of Rehabilitation, Department of Clinical Nursing, Józef Pilsudski University of Physical Education in Warsaw
| | - Dorota Bylina
- Chair of Natural Sciences, Józef Pilsudski University of Physical Education in Warsaw, Faculty of Physical Education in Biala Podlaska
| | | | - Błażej Pruszczyński
- Department of Orthopaedics and Paediatric Orthopaedics Medical University of Lodz
| | - Artur Stolarczyk
- Orthopaedic and Rehabilitation Department, Medical University of Warsaw, Poland
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11
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Bragante KC, Groisman S, Carboni C, Baiocchi JMT, da Motta NW, Silva MF, Pinto RC, Plentz RDM, Wienandts P, Jotz GP. Efficacy of exercise therapy during radiotherapy to prevent reduction in mouth opening in patients with head and neck cancer: A randomized controlled trial. Oral Surg Oral Med Oral Pathol Oral Radiol 2019; 129:27-38. [PMID: 31685429 DOI: 10.1016/j.oooo.2019.09.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 09/11/2019] [Accepted: 09/21/2019] [Indexed: 01/31/2023]
Abstract
OBJECTIVE The aim of this study was to compare the efficacy of 2 protocols of exercise therapy to avoid reduction in mouth opening (MO) in patients undergoing radiotherapy for head and neck cancer. STUDY DESIGN This was a randomized, controlled, double-blind, 3-arm, parallel-group, prevention clinical trial. Ninety patients were randomized into 3 groups to perform exercises during radiotherapy treatment: intervention group 1 (G1); intervention group 2 (G2); and control group (CG). Maximum MO was measured before (T0), immediately after (T1), and at 12 months (T2) after completion of radiotherapy treatment. Generalized estimating equations model complemented by the least significant difference test was applied to group comparisons. RESULTS There was no significant difference in MO measure between the groups at the 3 assessment time points (P = .264). The difference in MO measure from baseline to 12 months after having completed radiotherapy was -1 mm in CG (95% confidence interval [CI] -4.0 to 2.0); 1.3 mm in G1 (95% CI -1.7 to 4.3); and 0.5 mm in G2 (95% CI -3.4 to 4.4). CONCLUSIONS It was not possible to conclude that the exercise protocols performed in this study are more effective than the usual guidance to prevent reduction in MO in patients undergoing radiotherapy for head and neck cancer.
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Affiliation(s)
- Karoline Camargo Bragante
- Department of Health Science, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil.
| | - Sandro Groisman
- Department of Health Science, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | | | | | - Neiro Waechter da Motta
- Department of Radiation Oncology, Hospital Santa Rita, Santa Casa de Misericórdia de Porto Alegre (ISCMPA), Porto Alegre, RS, Brazil
| | | | - Roselie Corcini Pinto
- Department of Radiation Oncology, Hospital Santa Rita, Santa Casa de Misericórdia de Porto Alegre (ISCMPA), Porto Alegre, RS, Brazil
| | - Rodrigo Della Mea Plentz
- Department of Health Science, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | - Patrícia Wienandts
- Department of Special Dental Care, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Geraldo Pereira Jotz
- Department of Morphological Sciences, UFRGS, Rua Sarmento Leite, Porto Alegre, RS, Brazil
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12
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Takeuchi‐Sato T, Ono Y, Funato M, Sato H, Suganuma T, Baba K. Efficacy of an email‐based recording and reminding system for limiting daytime non‐functional tooth contact in patients with temporomandibular disorders: A randomized controlled trial. J Oral Rehabil 2019; 47:158-163. [DOI: 10.1111/joor.12875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 07/23/2019] [Accepted: 08/10/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Tamiyo Takeuchi‐Sato
- Division of Temporomandibular Disorders and Orofacial Pain, Department of Special Needs Dentistry Showa University School of Dentistry Ohta‐ku Japan
| | - Yasuhiro Ono
- Department of Prosthodontics Showa University School of Dentistry Ohta‐ku Japan
| | - Masahiko Funato
- Research Institute for Sport and Exercise Sciences Showa University Yokohama Japan
| | - Hitoshi Sato
- Department of Oral and Maxillofacial Surgery Showa University School of Dentistry Ohta‐ku Japan
| | - Takeshi Suganuma
- Division of Temporomandibular Disorders and Orofacial Pain, Department of Special Needs Dentistry Showa University School of Dentistry Ohta‐ku Japan
| | - Kazuyoshi Baba
- Department of Prosthodontics Showa University School of Dentistry Ohta‐ku Japan
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13
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Satokawa C, Nishiyama A, Suzuki K, Uesugi S, Kokai S, Ono T. Evaluation of tissue oxygen saturation of the masseter muscle during standardised teeth clenching. J Oral Rehabil 2019; 47:19-26. [PMID: 31332831 DOI: 10.1111/joor.12863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/03/2019] [Accepted: 07/18/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND Haemodynamics during recovery after teeth clenching is poorly understood. OBJECTIVE To clarify factors influencing tissue blood oxygenation recovery after clenching with altered muscle activity and duration, but constant total muscle activity. METHODS The following tasks were based on constant maximum voluntary clenching (100% MVC): (a) 50% MVC × 30 seconds; (b) 30% MVC × 50 seconds; and (c) 10% MVC × 150 seconds. Tissue oxygenated (oxy-Hb), deoxygenated (deoxy-Hb) and total haemoglobin (total-Hb) were recorded using near-infrared spectroscopy in the masseter muscle during recovery after each task. Participants rested for 30 seconds before each task; average resting values were set as baseline. Respective ratios to baseline at 20, 60, 120 and 180 seconds after each task were calculated; the tasks were compared at each time point using one-way repeated-measures ANOVA. RESULTS Oxy-Hb and total-Hb decreased and deoxy-Hb increased during the tasks and recovered thereafter. For Task 3, not all values recovered to baseline, even after 180 seconds (oxy-Hb: 96.85%, total-Hb: 98.31%, deoxy-Hb: 102.98%). Oxy-Hb (after 180 seconds, Task 1-Task 3: P < .001, Task 2-Task 3: P = .013) and total-Hb (after 180 seconds, Task 1-Task 3: P < .001, Task 2-Task 3: P = .005) were significantly lower, and deoxy-Hb (after 180 seconds, Task 1-Task 3: P < .001, Task 2-Task 3: P = .005) was significantly higher for Task 3 than other tasks, at all times during and after recovery. CONCLUSION Despite the same total muscle activity, weak-force, long-duration clenching is more harmful than strong-force, short-duration clenching, suggesting a greater effect of awakening bruxism than sleep bruxism on myalgia.
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Affiliation(s)
- Chiho Satokawa
- Orthodontic Science, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Akira Nishiyama
- Orofacial Pain Management, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Katsuhiko Suzuki
- Orthodontic Science, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Shunsuke Uesugi
- Orthodontic Science, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Satoshi Kokai
- Orthodontic Science, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Takashi Ono
- Orthodontic Science, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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14
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Baad‐Hansen L, Thymi M, Lobbezoo F, Svensson P. To what extent is bruxism associated with musculoskeletal signs and symptoms? A systematic review. J Oral Rehabil 2019; 46:845-861. [DOI: 10.1111/joor.12821] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 05/09/2019] [Accepted: 05/11/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Lene Baad‐Hansen
- Section of Oro‐facial Pain and Jaw Function, Department of Dentistry Aarhus University Aarhus Denmark
- Scandinavian Center for Oro‐facial Neurosciences (SCON)
| | - Magdalini Thymi
- Department of Oral Health Sciences, Academic Centre for Dentistry Amsterdam (ACTA) University of Amsterdam Amsterdam The Netherlands
- Vrije Uiversiteit Amsterdam Amsterdam The Netherlands
| | - Frank Lobbezoo
- Department of Oral Health Sciences, Academic Centre for Dentistry Amsterdam (ACTA) University of Amsterdam Amsterdam The Netherlands
- Vrije Uiversiteit Amsterdam Amsterdam The Netherlands
| | - Peter Svensson
- Section of Oro‐facial Pain and Jaw Function, Department of Dentistry Aarhus University Aarhus Denmark
- Scandinavian Center for Oro‐facial Neurosciences (SCON)
- Department of Dental Medicine Karolinska Institutet Huddinge Sweden
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15
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Haggiag A, de Siqueira JTT. A new biofeedback approach for the control of masseter and temporal myalgia: Utilization of an awake posterior interocclusal device. Cranio 2018; 38:180-186. [PMID: 30099938 DOI: 10.1080/08869634.2018.1503991] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Objective: To evaluate the improvement in reducing the pain of patients diagnosed with masticatory myofascial pain and bruxism when undergoing treatment with a partial posterior interocclusal device for the management and control of awake bruxism through biofeedback. Methods: Sixty patients were evaluated during the following periods: pretreatment, 7, 30, and 90 days. The evaluation was carried out by measuring the reduction in pain using clinical and numerical scales. Results: The majority of the patients who complained of masticatory myofascial pain, TMJ, and neck pain experienced a significant reduction in pain between t0 and t30 (p < 0.0001). After 30 days of using the device, the improvement remained at the same level, without any recurrence of pain up to t90. Conclusion: The utilization of a posterior interocclusal device for the management and control of awake bruxism through biofeedback contributed to the reduction of pain in the majority of patients.
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Affiliation(s)
- Alain Haggiag
- Orofacial Pain Team of the Dentistry Division, Hospital das Clínicas, University of São Paulo, São Paulo, Brazil
| | - Jose Tadeu Tesseroli de Siqueira
- Head of the Orofacial Pain Team of the Dentistry Division, Hospital das Clínicas and collaborator professor of the Department of Neurology of the Medical School, University of São Paulo, São Paulo, Brazil
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16
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Mude AH, Kawakami S, Kato S, Minagi S. Properties of tonic episodes of masseter muscle activity during waking hours and sleep in subjects with and without history of orofacial pain. J Prosthodont Res 2018; 62:234-238. [DOI: 10.1016/j.jpor.2017.09.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 09/26/2017] [Accepted: 09/27/2017] [Indexed: 11/16/2022]
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17
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Ikoma T, Bendixen KH, Arima T, Dawson A, Yamaguchi T, List T, Svensson P. Effects of Low-Intensity Contractions of Different Craniofacial Muscles in Healthy Participants - An Experimental Cross-Over Study. Headache 2018; 58:559-569. [DOI: 10.1111/head.13280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 12/24/2017] [Accepted: 12/26/2017] [Indexed: 12/24/2022]
Affiliation(s)
- Tomoko Ikoma
- Faculty of Dental Medicine and Graduate School of Dental Medicine; Hokkaido University; Sapporo Japan
| | - Karina Haugaard Bendixen
- Section of Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health; Aarhus University; Aarhus Denmark
- Scandinavian Center for Orofacial Neurosciences (SCON); Denmark , Sweden (A. Dawson, T. List)
| | - Taro Arima
- Section of International Affairs, Faculty of Dental Medicine and Graduate School of Dental Medicine; Hokkaido University; Sapporo Japan (Taro Arima)
| | - Andreas Dawson
- Scandinavian Center for Orofacial Neurosciences (SCON); Denmark , Sweden (A. Dawson, T. List)
- Centre for Oral Rehabilitation, Östergötland County Council; Linköping Norrköping Sweden
- Department of Orofacial Pain and Jaw Function, Faculty of Odontology; Malmö University; Malmö Sweden
| | - Taihiko Yamaguchi
- Department of Crown and Bridge Prosthodontics, Faculty of Dental Medicine and Graduate School of Dental Medicine; Hokkaido University; Sapporo Japan
| | - Thomas List
- Scandinavian Center for Orofacial Neurosciences (SCON); Denmark , Sweden (A. Dawson, T. List)
- Department of Orofacial Pain and Jaw Function, Faculty of Odontology; Malmö University; Malmö Sweden (Thomas List)
| | - Peter Svensson
- Scandinavian Center for Orofacial Neurosciences (SCON); Denmark , Sweden (A. Dawson, T. List)
- Section of Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health; Aarhus University; Aarhus Denmark
- Department of Dental Medicine; Karolinska Institutet; Huddinge Sweden
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18
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Yamaguchi S, Okada C, Watanabe Y, Watanabe M, Hattori Y. Analysis of masticatory muscle coordination during unilateral single-tooth clenching using muscle functional magnetic resonance imaging. J Oral Rehabil 2017; 45:9-16. [PMID: 29090477 DOI: 10.1111/joor.12583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/26/2017] [Indexed: 12/15/2022]
Abstract
In a previous study, we used muscle functional magnetic resonance imaging to show that the anterior movement of the occlusal point increased the activity of the superior head of the ipsilateral lateral pterygoid muscle (ipsilateral SHLP) during unilateral single-tooth clenching. The purpose of this study was to verify the hypothesis that the increased activity of the ipsilateral SHLP described above serves to antagonise the occlusal force acting on the condyle. In total, 9 healthy volunteers were requested to perform left unilateral clenching at the first molar or first premolar region for 1 minute at 20% or 40% maximum voluntary clenching force. Changes in the mean proton transverse relaxation time (∆T2) were examined from the magnetic resonance images obtained before and after each clenching act as an index of the activity in all masticatory muscles. Correlation analyses of the mean ΔT2 for each volume of interest were performed with the first molar or premolar clenches to analyse the correlation between the activities in each muscle. A statistically significant correlation was exhibited between the ipsilateral temporal and ipsilateral SHLP (r = .651, P = .003) during first premolar clenching. However, no significant correlations were observed in the ipsilateral SHLP during first molar clenching. The results of this study suggest that the ipsilateral SHLP may contribute to the pulling of the mandibular condyle forward against the occlusal force generated by the ipsilateral temporal muscle.
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Affiliation(s)
- S Yamaguchi
- Division of Aging and Geriatric Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - C Okada
- Division of Aging and Geriatric Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Y Watanabe
- Department of Health Services Management, Faculty of Health Sciences, Tohoku Fukushi University, Sendai, Japan.,Kansei Fukushi Research Center, Tohoku Fukushi University, Sendai, Japan
| | - M Watanabe
- Division of Aging and Geriatric Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.,Kansei Fukushi Research Center, Tohoku Fukushi University, Sendai, Japan
| | - Y Hattori
- Division of Aging and Geriatric Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
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Suzuki S, Arima T, Kitagawa Y, Svensson P, Castrillon E. Influence of glutamate-evoked pain and sustained elevated muscle activity on blood oxygenation in the human masseter muscle. Eur J Oral Sci 2017; 125:453-462. [DOI: 10.1111/eos.12383] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Shunichi Suzuki
- Section of Orofacial Pain and Jaw Function; Department of Dentistry and Oral Health, Health; Aarhus University; Aarhus Denmark
- Division of Oral Diagnosis and Medicine; Department of Oral Pathobiological Science; Faculty of Dental Medicine and Graduate School of Dental Medicine; Hokkaido University; Sapporo Japan
- Scandinavian Center for Orofacial Neurosciences (SCON); Aarhus Denmark
| | - Taro Arima
- Section of International Affairs; Faculty of Dental Medicine and Graduate School of Dental Medicine; Hokkaido University; Sapporo Japan
- Clinical Division of Temporomandibular Disorders; Hokkaido University Hospital; Sapporo Japan
| | - Yoshimasa Kitagawa
- Division of Oral Diagnosis and Medicine; Department of Oral Pathobiological Science; Faculty of Dental Medicine and Graduate School of Dental Medicine; Hokkaido University; Sapporo Japan
| | - Peter Svensson
- Section of Orofacial Pain and Jaw Function; Department of Dentistry and Oral Health, Health; Aarhus University; Aarhus Denmark
- Scandinavian Center for Orofacial Neurosciences (SCON); Aarhus Denmark
- Department of Dental Medicine; Karolinska Institutet; Huddinge Sweden
| | - Eduardo Castrillon
- Section of Orofacial Pain and Jaw Function; Department of Dentistry and Oral Health, Health; Aarhus University; Aarhus Denmark
- Scandinavian Center for Orofacial Neurosciences (SCON); Aarhus Denmark
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20
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Oliveira LF, Palinkas M, Vasconcelos PBD, Regalo IH, Cecilio FA, Oliveira EF, Semprini M, Siéssere S, Regalo SCH. Influence of age on the electromyographic fatigue threshold of the masseter and temporal muscles of healthy individuals. Arch Oral Biol 2017; 84:1-5. [PMID: 28926743 DOI: 10.1016/j.archoralbio.2017.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 08/30/2017] [Accepted: 09/07/2017] [Indexed: 11/24/2022]
Affiliation(s)
- Lígia Franco Oliveira
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
| | - Marcelo Palinkas
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil.
| | - Paulo Batista de Vasconcelos
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
| | - Isabela Hallak Regalo
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
| | - Flávia Argentato Cecilio
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
| | - Erica Franco Oliveira
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
| | - Marisa Semprini
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
| | - Selma Siéssere
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
| | - Simone Cecilio Hallak Regalo
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
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21
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Goiato MC, Zuim PRJ, Moreno A, Dos Santos DM, da Silva EVF, de Caxias FP, Turcio KHL. Does pain in the masseter and anterior temporal muscles influence maximal bite force? Arch Oral Biol 2017; 83:1-6. [PMID: 28688272 DOI: 10.1016/j.archoralbio.2017.06.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 06/20/2017] [Accepted: 06/22/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate changes in pain and muscle force, and the relationship between them, in patients with muscle pain and bruxism, prior to and after treatment. METHODS Thirty women with bruxism and myofascial pain (Ia) were included in this study. Sleep bruxism diagnosis was made based on clinical diagnostic criteria, and awake bruxism diagnosis was made by patient questionnaires and the presence of tooth wear. The diagnosis of myofascial pain was established according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC-TMD). Dentulous or partially edentulous patients (rehabilitated with conventional fixed prostheses) were included in the study according to the inclusion and exclusion criteria. The pain treatment protocol included occlusal splints, patient education, and physiotherapy for 30days. Bite force was measured using a dynamometer at the central incisor and the first molar regions on both sides. The exams were performed at baseline, after 7days, and 30days after treatment. The Wilcoxon test was used to compare patient pain level response among the periods analyzed in the study. Bite force data were submitted to two-way repeated-measures ANOVA, followed by the Tukey HSD test (p<0.05). A simple regression analysis was performed to verify the relation between pain level and bite force. RESULTS Results revealed that there was a statistical difference in pain level over time for both muscles and sides (p<0.01). In the molar region, the bite force exhibited significantly higher values after 30days of treatment, when compared with the baseline (p<0.001). There was a correlation between pain level and bite force only for the temporal muscle in all periods analyzed (p<0.05). There was no strong correlation in the response level points to support the association of pain and bite force. CONCLUSIONS Pain level decreased and bite force increased in the molar region after treatment. No strong correlation or dispersion in the relationship between pain levels and bite force was seen in women with myofascial pain and bruxism.
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Affiliation(s)
- Marcelo Coelho Goiato
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Sao Paulo State University (UNESP), Brazil
| | - Paulo Renato Junqueira Zuim
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Sao Paulo State University (UNESP), Brazil
| | - Amália Moreno
- Department of Oral Surgery, Pathology and Dental Clinical, School of Dentistry, Federal University of Minas Gerais (UFMG), Brazil
| | - Daniela Micheline Dos Santos
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Sao Paulo State University (UNESP), Brazil
| | | | - Fernanda Pereira de Caxias
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Sao Paulo State University (UNESP), Brazil
| | - Karina Helga Leal Turcio
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Sao Paulo State University (UNESP), Brazil.
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22
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Wei F, Van Horn MH, Coombs MC, She X, Gonzales TS, Gonzalez YM, Scott JM, Iwasaki LR, Nickel JC, Yao H. A pilot study of nocturnal temporalis muscle activity in TMD diagnostic groups of women. J Oral Rehabil 2017; 44:517-525. [PMID: 28449265 DOI: 10.1111/joor.12517] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2017] [Indexed: 01/28/2023]
Abstract
Temporomandibular disorder (TMD) incidences are believed to be related to parafunctional behaviours like teeth clenching. This pilot study aimed to (i) develop an automated clench-detection algorithm, and (ii) apply the algorithm to test for differences in nocturnal clenching in women with and without TMD. Subjects gave informed consent to participate. Adult women were categorised using Diagnostic Criteria for TMD according to presence/absence (+/-) of both TM joint disc placement (DD) and chronic pain (P) into two groups (+DD+P, -DD-P) with 12 subjects each. Surface temporalis electromyography was recorded during oral tasks performed by subjects at two laboratory sessions. The data were used to characterise muscle activity per N of bite force (μV/N) for each subject, develop the clench-detection algorithm and test its accuracy. Ambulatory surface temporalis electromyography was self-recorded by each subject over three nights and analysed using the algorithm and bite force (N) versus muscle activity μV/N calibrations. Bonferroni-adjusted homoscedastic t-tests assessed for significant between-group differences in clenching (P < 0·05). Sensitivity, specificity and accuracy of algorithm-detected laboratory clenches were all ≥96%. During self-recordings 95% of clenches had durations of <4 s and peak forces of <10 N in both groups. Mean clench durations were significantly longer (P = 0·042) in +DD+P (1·9 ± 0·8 s) than -DD-P subjects (1·4 ± 0·4 s). Mean temporalis duty factors (%clench time/total recording time) were significantly larger (P = 0·041) in +DD+P (0·47 ± 0·34%) than -DD-P (0·26 ±0·22%) subjects. Nocturnal temporalis muscle activities detected by a validated algorithm were longer per clench and recording time in +DD+P compared to -DD-P women.
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Affiliation(s)
- F Wei
- Department of Bioengineering, Clemson University, Clemson, SC, USA
| | - M H Van Horn
- Department of Bioengineering, Clemson University, Clemson, SC, USA
| | - M C Coombs
- Department of Bioengineering, Clemson University, Clemson, SC, USA.,Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - X She
- Department of Bioengineering, Clemson University, Clemson, SC, USA
| | - T S Gonzales
- Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Y M Gonzalez
- Department of Oral Diagnostic Sciences, School of Dental Medicine, University at Buffalo, Buffalo, NY, USA
| | - J M Scott
- Department of Research and Graduate Programs, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA
| | - L R Iwasaki
- Department of Oral Diagnostic Sciences, School of Dental Medicine, University at Buffalo, Buffalo, NY, USA.,Departments of Orthodontics and Dentofacial Orthopedics, and Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA
| | - J C Nickel
- Department of Oral Diagnostic Sciences, School of Dental Medicine, University at Buffalo, Buffalo, NY, USA.,Departments of Orthodontics and Dentofacial Orthopedics, and Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA
| | - H Yao
- Department of Bioengineering, Clemson University, Clemson, SC, USA.,Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
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23
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Manfredini D, Poggio CE. Prosthodontic planning in patients with temporomandibular disorders and/or bruxism: A systematic review. J Prosthet Dent 2017; 117:606-613. [DOI: 10.1016/j.prosdent.2016.09.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 09/19/2016] [Accepted: 09/19/2016] [Indexed: 12/14/2022]
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24
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Xu L, Fan S, Cai B, Fang Z, Jiang X. Influence of sustained submaximal clenching fatigue test on electromyographic activity and maximum voluntary bite forces in healthy subjects and patients with temporomandibular disorders. J Oral Rehabil 2017; 44:340-346. [PMID: 28244122 DOI: 10.1111/joor.12497] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2017] [Indexed: 11/30/2022]
Affiliation(s)
- L. Xu
- Department of Rehabilitation Medicine; Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - S. Fan
- Department of Rehabilitation Medicine; Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - B. Cai
- Department of Rehabilitation Medicine; Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Z. Fang
- Department of Rehabilitation Medicine; Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - X. Jiang
- Department of Rehabilitation Medicine; Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
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25
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Jiménez-Silva A, Peña-Durán C, Tobar-Reyes J, Frugone-Zambra R. Sleep and awake bruxism in adults and its relationship with temporomandibular disorders: A systematic review from 2003 to 2014. Acta Odontol Scand 2017; 75:36-58. [PMID: 27796166 DOI: 10.1080/00016357.2016.1247465] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE In order to establish a relationship between bruxism and temporomandibular disorders (TMDs), a systematic review was performed. MATERIALS AND METHODS A systematic research was performed based on PubMed, Cochrane Library, Medline, Embase, BIREME, Lilacs and Scielo data bases, between 2003 and 2014 including all languages. Descriptive clinical cases were identified. Two independent authors selected the articles. PICO format was used to analyse the studies and the Newcastle-Ottawa Scale (NOS) was used to verify the quality of the evidence. RESULTS Thirty-nine studies (n = 39) were analysed in this review. According to bruxism diagnosis, articles were grouped as follows: polysomnographic diagnosis (PSG) (n = 7), clinical diagnosis (n = 11) and survey/self-report (n = 21). Thirty-three articles (n = 33) established a positive relation between bruxism and TMD and six (n = 6) did not. Quality of evidence was low to moderate. In general, the most part of the studies showed shortcomings on their design with bias risk, and also had a low sensitivity on bruxism diagnosis. CONCLUSIONS The evidence based on PSG was not as conclusive as the studies that used surveys and clinical exam to diagnosis bruxism, when bruxism was related to TMD. Sleep bruxism could be associated with myofascial pain, arthralgia and joint pathology as disc displacement and joint noises. Although the evidence at present is inconclusive and does not provide information according to the type of bruxism (bruxism sleep and wakefulness), it is possible to suggest that bruxism would be associated with TMD.
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26
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Häggman-Henrikson B, Osterlund C, Eriksson PO. Endurance during Chewing in Whiplash-associated Disorders and TMD. J Dent Res 2016; 83:946-50. [PMID: 15557403 DOI: 10.1177/154405910408301211] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We have previously shown an association between neck injury and disturbed jaw function. This study tested the hypothesis of a relationship between neck injury and impaired endurance during chewing. Fifty patients with whiplash-associated disorders (WAD) were compared with 50 temporomandibular disorders (TMD) patients and 50 healthy subjects. Endurance was evaluated during unilateral chewing of gum for 5 min when participants reported fatigue and pain. Whereas all healthy subjects completed the task, 1/4 of the TMD and a majority of the WAD patients discontinued the task. A majority of the WAD patients also reported fatigue and pain. These findings suggest an association between neck injury and reduced functional capacity of the jaw motor system. From the results, we propose that routine examination of WAD patients should include jaw function and that an endurance test as described in this study could also be a useful tool for non-dental professionals.
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Affiliation(s)
- B Häggman-Henrikson
- Department of Odontology, Clinical Oral Physiology, Umeå University, S-901 87 Umeå, Sweden
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27
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Criado L, de La Fuente A, Heredia M, Montero J, Albaladejo A, Criado JM. Electromyographic biofeedback training for reducing muscle pain and tension on masseter and temporal muscles: A pilot study. J Clin Exp Dent 2016; 8:e571-e576. [PMID: 27957273 PMCID: PMC5149094 DOI: 10.4317/jced.52867] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 01/13/2016] [Indexed: 11/10/2022] Open
Abstract
Background Due to the absence of agreement about an effective unified treatment for temporomandibular disorders, non-invasive therapies such as EMG-biofeedback generate a greater interest. Furthermore, most studies to the present show methodological deficiencies that must be solved in the future, which makes important to emphasize this line of studies. Material and Methods Fourteen patients were selected for this case series study, and replied to a questionnaire concerning awareness of bruxism, painful muscles, and muscle tension. They also practiced an intraoral exploration (occlusal analysis and mandibular dynamics), and an extraoral exploration of the head and neck muscles and the temporomandibular joint. Before each session, patients responded to a questionnaire about the subjective perceived improvement. In each session, a period of three minutes of pre-biofeedback EMG activity of right masseter and temporal muscles was registered, then patients performed 30 iterations of visual EMG-biofeedback training and finally, a period of three minutes of post-EMG activity was also registered for those muscles. Patients performed four sessions. Results A decrease in painful symptoms was found for all patients since the first session. EMG activity decreases (p<0,05) in both muscles during the biofeedback training stage, in the four sessions. It is also observed a decrease (p<0,05) in EMG activity in the masseter muscle at the post-biofeedback stage, in the second and third sessions. There is likewise a decrease in EMG post-biofeedback activity of the temporal muscle (p<0,05) in sessions two, three, and four. Conclusions EMG-biofeedback training produces a decrease in EMG activity in both masseter and temporal muscles during the session. This decrease persists during the post-biofeedback period since the second session. Also there is a decrease in painful symptoms for all patients. Key words:Muscle tension, muscle pain, EMG-biofeedback, masseter muscle, temporal muscle.
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Affiliation(s)
- Laura Criado
- PhD, Student. Universidad de Salamanca. Dep. Cirugía. Facultad de Medicina. Avenida Alfonso X el Sabio s/n. 37007. Salamanca. Spain
| | - Antonio de La Fuente
- PhD, MD. Associate Professor. Universidad de Salamanca. Dep. Fisiología y Farmacología. Facultad de Medicina. Avenida Alfonso X el Sabio s/n. 37007. Salamanca. Spain
| | - Margarita Heredia
- PhD. Senior Lecturer. Universidad de Salamanca. Dep. Fisiología y Farmacología. Facultad de Medicina. Avenida Alfonso X el Sabio s/n. 37007. Salamanca. Spain
| | - Javier Montero
- PhD. Associate Professor. Universidad de Salamanca. Dep. Cirugía. Facultad de Medicina. Avenida Alfonso X el Sabio s/n. 37007. Salamanca. Spain
| | - Alberto Albaladejo
- PhD. Associate Professor. Universidad de Salamanca. Dep. Cirugía. Facultad de Medicina. Avenida Alfonso X el Sabio s/n. 37007. Salamanca. Spain
| | - José-María Criado
- PhD, MD. Senior Lecturer. Universidad de Salamanca. Dep. Fisiología y Farmacología. Facultad de Medicina. Avenida Alfonso X el Sabio s/n. 37007. Salamanca. Spain
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28
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Suzuki S, Castrillon EE, Arima T, Kitagawa Y, Svensson P. Blood oxygenation of masseter muscle during sustained elevated muscle activity in healthy participants. J Oral Rehabil 2016; 43:900-910. [PMID: 27743403 DOI: 10.1111/joor.12450] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2016] [Indexed: 11/30/2022]
Abstract
Myofascial pain associated with temporomandibular disorders has often been linked to pathological muscle hyperactivity. As a result, localised disturbances of intramuscular blood flow could lead to a lower level of oxygen distribution, hypoxia and microcirculatory changes. To assess haemodynamic changes in the masseter muscle during sustained elevated muscle activity (SEMA). Sixteen healthy participants performed thirty 1-min bouts of SEMA with intervals of 1-min 'rest' periods between the bouts on a bite force transducer device. The participants completed three sessions with different percentage of their maximal voluntary occlusal bite force (MVOBF): 0% (no task), 10% or 40% MVOBF tasks. The order of the sessions was randomised with 1- to 2-week intervals. Haemodynamic characteristics of the masseter muscle were estimated with use of a laser blood oxygenation monitor. Tissue blood oxygen saturation (StO2 ) during SEMA was lower than during rest (P < 0·001). The relative changes in total haemoglobin (Total-Hb) and StO2 were influenced by condition (SEMA and rest) and with interactions between condition and session (0%, 10% and 40% MVOBF tasks). These results suggest that SEMA may lead to hypoxia in the masseter muscle and that the haemodynamic characteristics and muscle symptoms depend on the magnitude of muscle contractions. Overall, the present findings may help to provide better insights into relationships between jaw muscle activity, haemodynamic changes and symptom developments with implications for clinical conditions such as bruxism characterised by different levels of tooth-grinding and tooth-clenching muscle activity.
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Affiliation(s)
- S Suzuki
- Section of Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Health, Aarhus University, Aarhus, Denmark.,Scandinavian Center for Orofacial Neuroscience (SCON), Aarhus, Denmark.,Scandinavian Center for Orofacial Neuroscience (SCON), Malmö, Stockholm, Sweden.,Division of Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - E E Castrillon
- Section of Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Health, Aarhus University, Aarhus, Denmark.,Scandinavian Center for Orofacial Neuroscience (SCON), Aarhus, Denmark.,Scandinavian Center for Orofacial Neuroscience (SCON), Malmö, Stockholm, Sweden
| | - T Arima
- Division of International Affairs, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Y Kitagawa
- Division of Oral Diagnosis and Medicine, Department of Oral Pathobiological Science, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - P Svensson
- Section of Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, Health, Aarhus University, Aarhus, Denmark.,Scandinavian Center for Orofacial Neuroscience (SCON), Aarhus, Denmark.,Scandinavian Center for Orofacial Neuroscience (SCON), Malmö, Stockholm, Sweden.,Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden
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29
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Iida T, Komiyama O, Honki H, Komoda Y, Baad-Hansen L, Kawara M, Svensson P. Effect of a repeated jaw motor task on masseter muscle performance. Arch Oral Biol 2015; 60:1625-31. [DOI: 10.1016/j.archoralbio.2015.08.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 08/06/2015] [Accepted: 08/09/2015] [Indexed: 10/23/2022]
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30
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Effects of Experimental Tooth Clenching on Pain and Intramuscular Release of 5-HT and Glutamate in Patients With Myofascial TMD. Clin J Pain 2015; 31:740-9. [DOI: 10.1097/ajp.0000000000000154] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Takeuchi T, Arima T, Ernberg M, Yamaguchi T, Ohata N, Svensson P. Symptoms and physiological responses to prolonged, repeated, low-level tooth clenching in humans. Headache 2015; 55:381-94. [PMID: 25754714 DOI: 10.1111/head.12528] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/17/2014] [Indexed: 01/03/2023]
Abstract
BACKGROUND The traditional view contends bruxism, such as tooth grinding/clenching, is part of the etiology of temporomandibular disorders (TMD) including some subtypes of headaches. The purpose of this study is to investigate if a low-level but long-lasting tooth-clenching task initiates TMD symptoms/signs. METHODS Eighteen healthy participants (mean age ± SD, 24.0 ± 4.3 years) performed and repeated an experimental 2-hour tooth-clenching task at 10% maximal voluntary occlusal bite force at incisors (11.1 ± 4.6 N) for three consecutive days (Days 1-3). Pain and cardiovascular parameters were estimated during the experiment. RESULTS The task evoked pain in the masseter/temporalis muscles and temporomandibular joint after 40.0 ± 18.0 minutes with a peak intensity of 1.6 ± 0.4 on 0-10 numerical rating scale (NRS) after 105.0 ± 5.0 minutes (Day 1). On Day 2 and Day 3, pain had disappeared but the tasks, again, evoked pain with similar intensities. The onset and peak levels of pain were not different between the experimental days (P = .977). However, the area under the curve of pain NRS in the masseter on Day 2 and Day 3 were smaller than that on Day 1 (P = .006). Cardiovascular parameters changed during the task but not during the days. CONCLUSIONS Prolonged, low-level tooth clenching evoked short-lived pain like TMD. This intervention study proposes that tooth clenching alone is insufficient to initiate longer lasting and self-perpetuating symptoms of TMD, which may require other risk factors.
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Affiliation(s)
- Tamiyo Takeuchi
- Department of Crown and Bridge Prosthodontics, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
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32
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La Touche R, Paris-Alemany A, Gil-Martínez A, Pardo-Montero J, Angulo-Díaz-Parreño S, Fernández-Carnero J. Masticatory sensory-motor changes after an experimental chewing test influenced by pain catastrophizing and neck-pain-related disability in patients with headache attributed to temporomandibular disorders. J Headache Pain 2015; 16:20. [PMID: 25902781 PMCID: PMC4385233 DOI: 10.1186/s10194-015-0500-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 02/04/2015] [Indexed: 01/03/2023] Open
Abstract
Background Recent research has shown a relationship of craniomandibular disability with neck-pain-related disability has been shown. However, there is still insufficient information demonstrating the influence of neck pain and disability in the sensory-motor activity in patients with headache attributed to temporomandibular disorders (TMD). The purpose of this study was to investigate the influence of neck-pain-related disability on masticatory sensory-motor variables. Methods An experimental case–control study investigated 83 patients with headache attributed to TMD and 39 healthy controls. Patients were grouped according to their scores on the neck disability index (NDI) (mild and moderate neck disability). Initial assessment included the pain catastrophizing scale and the Headache Impact Test-6. The protocol consisted of baseline measurements of pressure pain thresholds (PPT) and pain-free maximum mouth opening (MMO). Individuals were asked to perform the provocation chewing test, and measurements were taken immediately after and 24 hours later. During the test, patients were assessed for subjective feelings of fatigue (VAFS) and pain intensity. Results VAFS was higher at 6 minutes (mean 51.7; 95% CI: 50.15-53.26) and 24 hours after (21.08; 95% CI: 18.6-23.5) for the group showing moderate neck disability compared with the mild neck disability group (6 minutes, 44.16; 95% CI 42.65-45.67/ 24 hours after, 14.3; 95% CI: 11.9-16.7) and the control group. The analysis shows a decrease in the pain-free MMO only in the group of moderate disability 24 hours after the test. PPTs of the trigeminal region decreased immediately in all groups, whereas at 24 hours, a decrease was observed in only the groups of patients. PPTs of the cervical region decreased in only the group with moderate neck disability 24 hours after the test. The strongest negative correlation was found between pain-free MMO immediately after the test and NDI in both the mild (r = −0.49) and moderate (r = −0.54) neck disability groups. VAFS was predicted by catastrophizing, explaining 17% of the variance in the moderate neck disability group and 12% in the mild neck disability group. Conclusion Neck-pain-related disability and pain catastrophizing have an influence on the sensory-motor variables evaluated in patients with headache attributed to TMD.
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Affiliation(s)
- Roy La Touche
- Department of Physiotherapy, Faculty of Health Science, The Center for Advanced Studies University La Salle, Universidad Autónoma de Madrid, Aravaca, Madrid, Spain. .,Motion in Brains Research Group, The Center for Advanced Studies University La Salle, Universidad Autónoma de Madird, Aravaca, Madrid, Spain. .,Institute of Neuroscience and Craniofacial Pain (INDCRAN), Madrid, Spain. .,Hospital La Paz Institute for Health Research, IdiPAZ, Madrid, Spain.
| | - Alba Paris-Alemany
- Department of Physiotherapy, Faculty of Health Science, The Center for Advanced Studies University La Salle, Universidad Autónoma de Madrid, Aravaca, Madrid, Spain. .,Motion in Brains Research Group, The Center for Advanced Studies University La Salle, Universidad Autónoma de Madird, Aravaca, Madrid, Spain. .,Institute of Neuroscience and Craniofacial Pain (INDCRAN), Madrid, Spain. .,Hospital La Paz Institute for Health Research, IdiPAZ, Madrid, Spain.
| | - Alfonso Gil-Martínez
- Department of Physiotherapy, Faculty of Health Science, The Center for Advanced Studies University La Salle, Universidad Autónoma de Madrid, Aravaca, Madrid, Spain. .,Motion in Brains Research Group, The Center for Advanced Studies University La Salle, Universidad Autónoma de Madird, Aravaca, Madrid, Spain. .,Institute of Neuroscience and Craniofacial Pain (INDCRAN), Madrid, Spain. .,Hospital La Paz Institute for Health Research, IdiPAZ, Madrid, Spain.
| | - Joaquín Pardo-Montero
- Department of Physiotherapy, Faculty of Health Science, The Center for Advanced Studies University La Salle, Universidad Autónoma de Madrid, Aravaca, Madrid, Spain. .,Motion in Brains Research Group, The Center for Advanced Studies University La Salle, Universidad Autónoma de Madird, Aravaca, Madrid, Spain. .,Institute of Neuroscience and Craniofacial Pain (INDCRAN), Madrid, Spain. .,Hospital La Paz Institute for Health Research, IdiPAZ, Madrid, Spain.
| | - Santiago Angulo-Díaz-Parreño
- Motion in Brains Research Group, The Center for Advanced Studies University La Salle, Universidad Autónoma de Madird, Aravaca, Madrid, Spain. .,Institute of Neuroscience and Craniofacial Pain (INDCRAN), Madrid, Spain. .,Faculty of Medicine, Universidad San Pablo CEU, Madrid, Spain.
| | - Josué Fernández-Carnero
- Motion in Brains Research Group, The Center for Advanced Studies University La Salle, Universidad Autónoma de Madird, Aravaca, Madrid, Spain. .,Hospital La Paz Institute for Health Research, IdiPAZ, Madrid, Spain. .,Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain.
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Tada H, Torisu T, Tanaka M, Murata H, De Laat A, Svensson P. Experimental low-level jaw clenching inhibits temporal summation evoked by electrical stimulation in healthy human volunteers. Arch Oral Biol 2015; 60:681-9. [PMID: 25757146 DOI: 10.1016/j.archoralbio.2015.02.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 01/31/2015] [Accepted: 02/11/2015] [Indexed: 01/12/2023]
Abstract
OBJECTIVE To examine the effect of low-level jaw clenching on temporal summation in healthy volunteers. DESIGN In 18 healthy volunteers, the pain intensities evoked at the masseter muscle and the hand palm by the first and last stimuli in a train of repeated electrical stimuli (0.3 or 2.0 Hz) were rated using 0-100mm visual analogue scales (VAS), in order to evaluate temporal summation before and after three types of jaw-muscle tasks: low-level jaw clenching, repetitive gum chewing and mandibular rest position. A set of concentric surface electrodes with different diameters (small and large) was used for the electrical stimulation. RESULTS The temporal summation evoked by the large diameter electrode with 2.0 Hz stimulation decreased significantly both on the masseter and the hand after low-level clenching (P ≤ 0.03), but did not show any significant change after the other tasks (P > 0.23). The VAS score of the first stimulation did not show any significant changes after low-level clenching (P > 0.57). CONCLUSIONS Experimental low-level jaw clenching can inhibit pain sensitivity, especially temporal summation. Low-level jaw clenching can modify pain sensitivity, most likely through the central nervous system. The findings suggest that potential harmful low-level jaw clenching or tooth contacting could continue despite painful symptoms, e.g., temporomandibular disorders.
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Affiliation(s)
- Hiroaki Tada
- Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, Sakamoto 1-7-1, Nagasaki 852-8588, Japan.
| | - Tetsurou Torisu
- Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, Sakamoto 1-7-1, Nagasaki 852-8588, Japan.
| | - Mihoko Tanaka
- Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, Sakamoto 1-7-1, Nagasaki 852-8588, Japan.
| | - Hiroshi Murata
- Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University, Sakamoto 1-7-1, Nagasaki 852-8588, Japan.
| | - Antoon De Laat
- Department of Oral Health Sciences, KU Leuven, Belgium; Dentistry, University Hospitals Leuven, Kapucijnenvoer, B-3000 Leuven, Belgium.
| | - Peter Svensson
- Section of Clinical Oral Physiology, School of Dentistry, Aarhus University, Aarhus, Denmark; Scandinavian Center for Orofacial Neurosciences (SCON), Vennelyst Boulevard 9, 8000 Aarhus C, Denmark; Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden.
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34
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Effect of experimental jaw muscle pain on dynamic bite force during mastication. Arch Oral Biol 2014; 60:256-66. [PMID: 25463903 DOI: 10.1016/j.archoralbio.2014.11.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 10/26/2014] [Accepted: 11/02/2014] [Indexed: 11/20/2022]
Abstract
Knowledge about how Temporomandibular Disorder (TMD) pain patients regulate masticatory function is still unclear. To investigate the effect of experimental jaw muscle pain as well as texture and size of food on mastication, twelve healthy participants (30.6±7.5 years old) participated in this study. Experimental pain was induced by an infusion of 0.5 M monosodium glutamate (MSG) with isotonic saline (IS) serving as a control. After the infusions, the Jaw Functional Limitation Scale (JFLS) and Pain Catastrophizing Scale (PCS) were filled out. Electromyographic (EMG) activity in the masseter and temporalis muscles, jaw movements and bite force, which was measured by a customized intra-oral device, were recorded simultaneously during mastication of three different types of food. Pain was scored continuously on a visual analog scale. The results demonstrated a trend towards a decrease in the impulse of the bite force, as well as a significant decrease in EMG activity of the masseter muscle during the first five masticatory cycles, in the MSG session. Also, MSG induced increased JFLS and PCS scores compared with IS. On the other hand, the results suggested that the applied levels of pain may not change habitual masticatory movements. This study has revealed that a clinically relevant level of pain in the masseter muscle has only minor impact on the performance of mastication, probably due to a lack of exacerbation of pain during function. In future studies of jaw muscle function during painful conditions, it is important to include patient-based reports of functional limitation and emotional distress.
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Raphael KG, Janal MN, Sirois DA, Dubrovsky B, Wigren PE, Klausner JJ, Krieger AC, Lavigne GJ. Masticatory muscle sleep background electromyographic activity is elevated in myofascial temporomandibular disorder patients. J Oral Rehabil 2014; 40:883-91. [PMID: 24237356 DOI: 10.1111/joor.12112] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2013] [Indexed: 11/28/2022]
Abstract
Despite theoretical speculation and strong clinical belief, recent research using laboratory polysomnographic (PSG) recording has provided new evidence that frequency of sleep bruxism (SB) masseter muscle events, including grinding or clenching of the teeth during sleep, is not increased for women with chronic myofascial temporomandibular disorder (TMD). The current case-control study compares a large sample of women suffering from chronic myofascial TMD (n = 124) with a demographically matched control group without TMD (n = 46) on sleep background electromyography (EMG) during a laboratory PSG study. Background EMG activity was measured as EMG root mean square (RMS) from the right masseter muscle after lights out. Sleep background EMG activity was defined as EMG RMS remaining after activity attributable to SB, other orofacial activity, other oromotor activity and movement artefacts were removed. Results indicated that median background EMG during these non-SB event periods was significantly higher (P < 0·01) for women with myofascial TMD (median = 3·31 μV and mean = 4·98 μV) than for control women (median = 2·83 μV and mean = 3·88 μV) with median activity in 72% of cases exceeding control activity. Moreover, for TMD cases, background EMG was positively associated and SB event-related EMG was negatively associated with pain intensity ratings (0-10 numerical scale) on post-sleep waking. These data provide the foundation for a new focus on small, but persistent, elevations in sleep EMG activity over the course of the night as a mechanism of pain induction or maintenance.
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Affiliation(s)
- K G Raphael
- Department of Oral & Maxillofacial Pathology, Radiology & Medicine, New York University College of Dentistry, New York, NY, USA
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The influence of different registration positions on condyle displacement in symptomatic patients. Oral Surg Oral Med Oral Pathol Oral Radiol 2014; 117:312-8. [PMID: 24528791 DOI: 10.1016/j.oooo.2013.11.498] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 11/13/2013] [Accepted: 11/18/2013] [Indexed: 11/21/2022]
Abstract
OBJECTIVE This study aimed to evaluate effects of different registration positions on the condyle-disk position changes in the mandibular fossa in symptomatic individuals. STUDY DESIGN Vertical and sagittal condyle position and thickness of the bilaminar zone were measured by magnetic resonance imaging during maximal intercuspation (MI) and with jigs in Gothic arch tracing guided centric relation (DIR method [Dynamics and Intraoral Registration]) and retruded contact position (RCP). Participants were 26 patients seeking treatment for temporomandibular disorders. Condyle and disk position in the fossa were calculated in the parasagittal plane. RESULTS Significant differences were found for MI, DIR, and RCP for thickness of bilaminar zone and sagittal condyle position, dependent on diagnosis and registration position for vertical and sagittal condyle position and thickness of bilaminar zone. CONCLUSIONS DIR position ensures the widest posterior space for the retrodiskal tissues and the slightest sagittal difference between condyle zenith and glenoid fossa.
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Manfredini D, Bucci MB, Sabattini VB, Lobbezoo F. Bruxism: Overview of Current Knowledge and Suggestions for Dental Implants Planning. Cranio 2014; 29:304-12. [DOI: 10.1179/crn.2011.045] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Sforza C, Zanotti G, Mantovani E, Ferrario VF. Fatigue in the Masseter and Temporalis Muscles at Constant Load. Cranio 2014; 25:30-6. [PMID: 17304915 DOI: 10.1179/crn.2007.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Fatigue is usually defined as the point at which a particular level of force can be no longer maintained. In the present study, surface EMG of the masseter and temporalis anterior muscles was measured in ten healthy young adults performing a unilateral molar (right side) clench. The subjects clenched on a bite force transducer at a fixed force level of 13 kg (127 N) as long as they could (endurance). The test ended when the subjects could no longer produce the required bite force. From the EMG recordings, the median power frequency was calculated at the beginning of the task (T0), after one minute of clenching (T1), and at the end of the task (T2, endurance time). For each subject and muscle, percentage decrements in the median power frequency were also computed at T1 and T2. Endurance time ranged between 79 and 470 s. Significant modifications in the median power frequency in both masseter muscles (right side, p=0.003; left side, p=0.02, analysis of variance) were found, with a significant difference for the median frequency at T2 (p<0.02 at post hoc test). The modifications in the temporalis muscles were not significant (p>0.05). Additionally, at T1, significant percentage decrements in the median power frequency were found for both right side muscles (p<0.05, paired Student's ). The left side muscles modifications (p>0.05) were not significant. A significant effect of side was found (p=0.007, analysis of variance), without effects of muscle and no muscle x side interaction. At T2, both masseter muscles and the right side temporalis had a significant modification in their median power frequency. Overall, the modifications were larger in the masseter than in the temporalis muscles (p=0.022, analysis of variance), without effects of side and no muscle x side interaction. In conclusion, a fixed submaximal muscular contraction provoked fatigue modifications in the EMG power spectra that were well comparable to those obtained in previous investigations using forces computed as percentages of individually assessed maximum bite forces The present protocol (endurance clenching at a fixed force level) could be used as both a research and a clinical tool that would allow an easier and less troublesome assessment of both healthy persons and patients.
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Affiliation(s)
- Chiarella Sforza
- Dept. of Human Morphology, University of Milan, via Mangiagalli 31, 1-20133 Milan, Italy.
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Funato M, Ono Y, Baba K, Kudo Y. Evaluation of the non-functional tooth contact in patients with temporomandibular disorders by using newly developed electronic system. J Oral Rehabil 2014; 41:170-6. [PMID: 24447128 PMCID: PMC4263305 DOI: 10.1111/joor.12129] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/08/2013] [Indexed: 11/28/2022]
Abstract
The aims of this study were to introduce a novel electronic system for reliable evaluation of the non-functional tooth contact in patients with temporomandibular disorders (TMDs) and investigate the possible associations between the non-functional tooth contact and some characteristics of the patients with TMD. We designed and installed a software program to send emails regarding the non-functional tooth contact to the subjects' preregistered cellular phones at intervals of 20 ± 9 min daily for 10 consecutive days. Twelve patients with TMD and 12 gender- and age-matched healthy subjects responded via emails to one of 3 choices: no tooth contact, tooth contact during oral functions or tooth contact not associated with oral functions. The influence of subjective stress, anxiety, depression, personality and daily activities on tooth contact was then assessed. The frequency of the non-functional tooth contact was significantly higher in the patients with TMD than in the healthy subjects (35·0% vs. 9·6%, P < 0·001), while no significant group difference was found for the frequency of functional tooth contact, the stress, anxiety, depression and personality.
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Affiliation(s)
- M Funato
- Division of Temporomandibular Disorders and Orofacial Pain, Department of Special Needs Dentistry, Showa University School of Dentistry, Tokyo, Japan
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Iida T, Overgaard A, Komiyama O, Weibull A, Baad-Hansen L, Kawara M, Sundgren PC, List T, Svensson P. Analysis of brain and muscle activity during low-level tooth clenching - a feasibility study with a novel biting device. J Oral Rehabil 2014; 41:93-100. [DOI: 10.1111/joor.12128] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/05/2013] [Indexed: 11/29/2022]
Affiliation(s)
- T. Iida
- Department of Oral Function and Rehabilitation; Nihon University School of Dentistry at Matsudo; Matsudo Japan
- Section of Clinical Oral Physiology; Department of Dentistry; Aarhus University; Aarhus Denmark
| | - A. Overgaard
- Department of Radiology/DC; Skane University Hospital; Malmö Sweden
- Department of Radiology/DC; Lund University; Lund Sweden
| | - O. Komiyama
- Department of Oral Function and Rehabilitation; Nihon University School of Dentistry at Matsudo; Matsudo Japan
| | - A. Weibull
- Department of Radiology/DC; Skane University Hospital; Malmö Sweden
- Department of Radiology/DC; Lund University; Lund Sweden
| | - L. Baad-Hansen
- Section of Clinical Oral Physiology; Department of Dentistry; Aarhus University; Aarhus Denmark
| | - M. Kawara
- Department of Oral Function and Rehabilitation; Nihon University School of Dentistry at Matsudo; Matsudo Japan
| | - P. C. Sundgren
- Department of Diagnostic Radiology; Clinical Sciences Lund; Lund University; Lund Sweden
| | - T. List
- Department of Orofacial Pain and Jaw Function; Faculty of Odontology; Malmö University; Malmö Sweden
| | - P. Svensson
- Section of Clinical Oral Physiology; Department of Dentistry; Aarhus University; Aarhus Denmark
- Mind Lab; Center for Functionally Integrative Neuroscience; Aarhus University Hospital; Aarhus Denmark
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Jadidi F, Castrillon EE, Nielsen P, Baad-Hansen L, Svensson P. Effect of contingent electrical stimulation on jaw muscle activity during sleep: a pilot study with a randomized controlled trial design. Acta Odontol Scand 2013; 71:1050-62. [PMID: 23148551 DOI: 10.3109/00016357.2012.741702] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To determine the effect of contingent electrical stimulation (CES) on jaw muscle activity during sleep in a double-blinded randomized controlled trial (RCT). MATERIALS AND METHODS Eleven patients with myofascial TMD (mean age 37 years) and with a clinical diagnosis of bruxism were included. EMG activity (Grindcare®) was recorded from the anterior temporalis muscle during sleep and analyzed online. Jaw muscle activity related to clenching or grinding triggered an electrical square-wave pulse train (450 ms) adjusted to a clear, but non-painful intensity. TMD patients were randomized into two groups: active treatment with CES or no CES (placebo). Number of EMG episodes/hour sleep was the primary outcome parameter. The following variables were assessed as secondary outcome parameters; number of painful muscles, maximum pain-free jaw opening, characteristic pain intensity, depression scores and Oral Health Impact Profile scores. Numerical Rating Scale scores for self-reported pain and muscle tension were registered for at least 4 nights per week during the experiment. RESULTS The number of EMG episodes/hour sleep was significantly reduced (52 ± 12%) in the CES group during the sessions with CES (ANOVA: p = 0.021) compared to baseline. There were no significant differences in the secondary outcome parameters (ANOVA: p > 0.513) or pain or muscle tension scores between groups (p = 0.645). The average duration of sleep hours during the nights with and without CES was not significantly different (p = 0.646). CONCLUSIONS These results demonstrate a significant inhibitory effect of CES on jaw muscle EMG activity during sleep in a RCT, but with no effects on self-reported pain.
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Affiliation(s)
- Faramarz Jadidi
- Section of Clinical Oral Physiology, Department of Dentistry, HEALTH, Aarhus University, Denmark
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Fujisawa M, Kanemura K, Tanabe N, Gohdo Y, Watanabe A, Iizuka T, Sato M, Ishibashi K. Determination of daytime clenching events in subjects with and without self-reported clenching. J Oral Rehabil 2013; 40:731-6. [DOI: 10.1111/joor.12087] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2013] [Indexed: 11/29/2022]
Affiliation(s)
- M. Fujisawa
- Division of Fixed Prosthodontics; Department of Restorative & Biomaterials Sciences; School of Dentistry; Meikai University; Sakado Japan
| | - K. Kanemura
- Department of Prosthodontics and Implantology; School of Dentistry; Iwate Medical University; Morioka Japan
| | - N. Tanabe
- Department of Prosthodontics and Implantology; School of Dentistry; Iwate Medical University; Morioka Japan
| | | | - A. Watanabe
- Division of Fixed Prosthodontics; Department of Restorative & Biomaterials Sciences; School of Dentistry; Meikai University; Sakado Japan
| | - T. Iizuka
- Division of Fixed Prosthodontics; Department of Restorative & Biomaterials Sciences; School of Dentistry; Meikai University; Sakado Japan
| | - M. Sato
- Division of Fixed Prosthodontics; Department of Restorative & Biomaterials Sciences; School of Dentistry; Meikai University; Sakado Japan
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Nishiyama A, Kino K, Sugisaki M, Tsukagoshi K. Influence of psychosocial factors and habitual behavior in temporomandibular disorder-related symptoms in a working population in Japan. Open Dent J 2012; 6:240-7. [PMID: 23346261 PMCID: PMC3551253 DOI: 10.2174/1874210601206010240] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 10/09/2012] [Accepted: 10/23/2012] [Indexed: 02/02/2023] Open
Abstract
Background: The symptoms of temporomandibular disorders (TMD) are directly influenced by numerous factors, and it is thought that additional factors exert indirect influences. However, the relationships between TMD-related symptoms (TRS) and these contributing factors are largely unknown. Thus, the goal of the present study was to investigate influences on TRS in a working population by determining the prevalence of TRS, analyzing contributing factors, and determining their relative influences on TRS. Materials and Methods: The study subjects were 2203 adults who worked for a single company. Subjects completed a questionnaire assessing TRS, psychosocial factors (stress, anxiety, depressed mood, and chronic fatigue), tooth-contacting habit, and sleep bruxism-related morning symptoms, using a 5-point numeric rating scale. Our analysis proceeded in 2 phases. First, all variables of the descriptor were divided into parts by using an exploratory factor analysis. Second, this factorial structure was verified by using a confirmatory factor analysis with structural equation modeling. Results: Of 2203 employees, 362 reported experiencing TRS (16.4%). Structural equation modeling generated a final model with a goodness of fit index of 0.991, an adjusted goodness of fit index of 0.984, and a root mean square error of approximately 0.021. These indices indicate a strong structural model. The standardized path coefficients for “habitual behavioral factors and TRS,” “psychosocial factors and habitual behavioral factors,” “psychosocial factors and TRS,” and “gender and habitual behavior factors” were 0.48, 0.38, 0.14, and 0.18, respectively. Conclusions: Habitual behavioral factors exert a stronger effect on TRS than do psychosocial factors.
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Affiliation(s)
- Akira Nishiyama
- Temporomandibular Joint and Oral Function, Comprehensive Oral Health Care, Comprehensive Patient Care, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
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Clinical significance of T2 mapping MRI for the evaluation of masseter muscle pain in patients with temporomandibular joint disorders. Oral Radiol 2012. [DOI: 10.1007/s11282-012-0108-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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The influence of different registration techniques on condyle displacement and electromyographic activity in stomatognathically healthy subjects: a prospective study. J Prosthet Dent 2012; 107:47-54. [PMID: 22230915 DOI: 10.1016/s0022-3913(12)60017-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
STATEMENT OF PROBLEM It is unclear whether different intermaxillary registration techniques are related to a physiological condylar position that permits neuromuscular equilibrium. PURPOSE This study analyzes and quantifies the effects of different registration techniques on the condyle position and how the registration technique modulates bilateral masseter and anterior temporalis muscle electromyographic activity. MATERIAL AND METHODS Three-dimensional electronic condylar position analysis (EPA) with an ultrasound-based jaw-tracking system and surface electromyographic activity (sEMG) was recorded during the registration of a manually guided centric relation (CR), maximal intercuspation (MI), and Gothic arch tracing guided centric relation (DIR method). Participants were 26 stomatognathically healthy volunteers (mean age, 30.6 ±9.5 years). Data were analyzed by 1-way ANOVA and post hoc Bonferroni correction (α=.05). RESULTS EPA showed significant differences (P<.001) for CR, MI, and DIR in the vertical, sagittal, and horizontal axes. The condyle position during DIR was found to be significantly more anteriorly and inferiorly located than with CR (P<.001) and MI (P<.04). There were no significant differences in the mean muscle activity among CR, MI, and DIR. Muscular symmetry ranged from 63.87 to 81.47%. Significantly higher symmetry for the anterior temporalis (P=.03) and the masseter (P=.03) was found during the DIR than with CR. Torque coefficients (potential laterodeviating effect) were between 88.02% (CR) and 89.94% (MI). CONCLUSIONS Registration technique significantly influenced the condyle position, while mean muscular activity was minimally affected. With respect to muscular balance and activation, the DIR position proved to be capable of inducing the greatest motor unit activity when compared with manually guided CR and MI.
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Carra MC, Huynh N, Lavigne G. Sleep bruxism: a comprehensive overview for the dental clinician interested in sleep medicine. Dent Clin North Am 2012; 56:387-413. [PMID: 22480810 DOI: 10.1016/j.cden.2012.01.003] [Citation(s) in RCA: 155] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Sleep bruxism (SB) is a common sleep-related motor disorder characterized by tooth grinding and clenching. SB diagnosis is made on history of tooth grinding and confirmed by polysomnographic recording of electromyographic (EMG) episodes in the masseter and temporalis muscles. The typical EMG activity pattern in patients with SB is known as rhythmic masticatory muscle activity (RMMA). The authors observed that most RMMA episodes occur in association with sleep arousal and are preceded by physiologic activation of the central nervous and sympathetic cardiac systems. This article provides a comprehensive review of the cause, pathophysiology, assessment, and management of SB.
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Affiliation(s)
- Maria Clotilde Carra
- Faculty of Dental Medicine, Univeristé de Montréal, CP 6128 Succursale Centre-Ville, Montreal, Quebec, H3C 3J7, Canada.
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Tooth clenching as a risk factor for temporomandibular disorders. INTERNATIONAL JOURNAL OF STOMATOLOGY & OCCLUSION MEDICINE 2011. [DOI: 10.1007/s12548-011-0029-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Firing duration of masseter motor units during prolonged low-level contractions. Clin Neurophysiol 2011; 122:2433-40. [DOI: 10.1016/j.clinph.2011.05.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2010] [Revised: 05/13/2011] [Accepted: 05/14/2011] [Indexed: 11/20/2022]
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Chakranarayan A, Jeyaraj P. Coronoid hyperplasia in chronic progressive trismus. Med Hypotheses 2011; 77:863-8. [DOI: 10.1016/j.mehy.2011.07.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 07/21/2011] [Accepted: 07/26/2011] [Indexed: 02/04/2023]
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