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Kilinc HE, Onan D, Ulger O. Investigation of masticatory muscle thickness and mechanosensitivity of cervical and masticatory muscles in myofascial temporomandibular disorder patients with bruxism: A cross-sectional study. Musculoskelet Sci Pract 2024; 70:102919. [PMID: 38335810 DOI: 10.1016/j.msksp.2024.102919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 01/15/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
OBJECTIVE Bruxism is a common problem associated with temporomandibular disorders (TMD). The aim of this study was to compare a patient group with Myofascial TMD and bruxism and a healthy control group in terms of masseter and temporal muscle thickness (clenching and resting), mechanosensitivity of neck and jaw muscles, craniofacial pain, and disability and emotional stress status. METHODS The study included 31 patients with myofascial TMD and bruxism (19 females, 12 males) with a mean age of 29.96 ± 8.12 years (range, 18-45 years), and a control group of 31 healthy subjects (19 females, 12 males) with a mean age of 27.58 ± 9.39 years years (range, 18-45 years). Masseter and temporal muscle thicknesses were evaluated with a mobile ultrasound device both at rest and when clenching the jaw. The mechanosensitivity values between the upper trapezius, obliquus capitis inferior, masseter and temporal muscles were measured with a digital algometer device. Craniofacial pain and disability level were evaluated with the Craniofacial Pain and Disability Index (CFPDI), and emotional stress levels with the Perceived Stress Scale-14 (PSS-14). RESULTS No difference was determined between the two groups in respect of the clenching and resting ratios of muscle thickness in any muscle (p > 0.05). The mechanosensitivity values in all muscles were lower in the myofascial TMD group than in the healthy group (p < 0.05). The CFPDI and PSS-14 scores were higher in the myofascial TMD group (p < 0.05). There was a moderate positive correlation between CFPDI, PSS-14 and Bruxism Frequency Score (p < 0.05). CONCLUSION The difference in mechanosensitivity and CFPDI values between the myofascial TMD patients with bruxism and the healthy control group indicates that the problem in this patient group has effects in the craniocervical and cervical regions. In addition, the correlation between CFPDI, PSS-14 and Bruxism Frequency Score in myofascial TMD patients suggests that this problem may be affected by the interaction of different parameters.
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Affiliation(s)
- Hasan Erkan Kilinc
- Spine Health Unit, Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey.
| | - Dilara Onan
- Spine Health Unit, Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey
| | - Ozlem Ulger
- Spine Health Unit, Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey
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Lee YH, Chun YH, Bae H, Lee JW, Kim HJ. Comparison of ultrasonography-based masticatory muscle thickness between temporomandibular disorders bruxers and temporomandibular disorders non-bruxers. Sci Rep 2024; 14:6923. [PMID: 38519584 PMCID: PMC10960048 DOI: 10.1038/s41598-024-57696-6] [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: 01/05/2024] [Accepted: 03/20/2024] [Indexed: 03/25/2024] Open
Abstract
To compare masticatory muscle thickness in patients with temporomandibular disorders (TMDs) during rest and clenching, and by body position, using ultrasonography. This prospective study included 96 patients with TMD (67 females, 29 males; mean age: 40.41 ± 17.88 years): group 1, comprising 66 patients with TMD without bruxism (TMD_nonbruxer), and group 2, comprising 30 patients with concurrent TMD and bruxism (TMD_bruxer). In patients with TMD, bruxism was correlated with the presence of tinnitus, muscle stiffness, sleep problems, psychological stress, and restricted mouth opening. The masseter muscle significantly thickened during clenching (11.16 ± 3.03 mm vs 14.04 ± 3.47 mm, p < 0.001), whereas the temporalis muscle showed no significant increase in thickness from resting to clenching in an upright position (7.91 ± 1.98 vs 8.39 ± 2.08, p = 0.103). Similarly, during clenching in the supine position, the masseter muscle was significantly thicker compared with rest (11.24 ± 2.42 vs 13.49 ± 3.09, p < 0.001), but no significant difference was observed in temporal muscle thickness (8.21 ± 2.16 vs 8.43 ± 1.94, p = 0.464). In comparison between two groups, the average thickness of the masseter muscle was greater among TMD_bruxers than among TMD_nonbruxers in both the upright and supine positions (all p < 0.05). In the generalized lineal model, female sex (B = - 1.018, 95% confidence interval [CI] - 1.855 to - 0.181, p = 0.017) and bruxism (B = 0.868, 95% CI 0.567 to 1.169, p = 0.048) significantly predicted changes in masseter muscle thickness. Female sex (B = - 0.201, 95% CI - 0.299 to - 0.103, p = 0.011), increased age (B = - 0.003, 95% CI - 0.005 to 0.000, p = 0.038), and muscle stiffness (B = - 1.373, 95% CI - 2.369 to - 0.376, p = 0.007) were linked to decreased temporal muscle thickness. Comparing TMD nonbruxer and bruxer muscle thicknesses in upright and supine positions revealed significant increased thickness in the masseter muscle during clenching but not in the temporalis muscle. Masseter muscle thickness varied significantly by sex, body position, and resting/clenching, notably influenced by bruxism. These findings emphasize the relevance of these factors in clinical examinations of patients with TMD.
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Affiliation(s)
- Yeon-Hee Lee
- Department of Orofacial Pain and Oral Medicine, Kyung Hee University, Kyung Hee University Dental Hospital, #613 Hoegi-dong, Dongdaemun-gu, Seoul, 02447, South Korea.
| | - Yang-Hyun Chun
- Department of Orofacial Pain and Oral Medicine, Kyung Hee University, Kyung Hee University Dental Hospital, #613 Hoegi-dong, Dongdaemun-gu, Seoul, 02447, South Korea
| | - Hyungkyu Bae
- Division in Anatomy and Developmental Biology, Department of Oral Biology, BK21 FOUR Project, Human Identification Research Institute, Yonsei University College of Dentistry, Seoul, South Korea
| | - Jung-Woo Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyung Hee University, Seoul, 02447, South Korea
| | - Hee-Jin Kim
- Division in Anatomy and Developmental Biology, Department of Oral Biology, BK21 FOUR Project, Human Identification Research Institute, Yonsei University College of Dentistry, Seoul, South Korea
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Arslan ZB, Yaşar F. Evaluation of the thickness and internal structure of the masseter muscle with ultrasonography in female bruxism patients. Oral Radiol 2023; 39:708-714. [PMID: 37217757 DOI: 10.1007/s11282-023-00688-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 05/10/2023] [Indexed: 05/24/2023]
Abstract
OBJECTIVES The aim of this study was to evaluate the differences in the thickness and internal structure of the masseter muscle in individuals with and without bruxism by ultrasonography. MATERIALS AND METHODS A total of 60 female patients with and without bruxism whose ages were ranging between 20 and 35 were included in the study. The masseter muscle thickness was measured during rest and maximum bite position. Ultrasonographic internal structure of the masseter muscle is classified according to the visibility of echogenic bands. In addition, the echogenic internal structure of the masseter muscle was evaluated with quantitative muscle ultrasound. RESULTS The masseter muscle thickness was significantly higher in both positions in patients with bruxism (p < 0.05). There was no significant difference between two groups in the evaluation of echogenicity (p > 0.05). CONCLUSIONS Ultrasonography is a useful and important diagnostic method for evaluating masseter muscle without using radiation.
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Affiliation(s)
- Zeynep Betül Arslan
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ankara Yıldırım Beyazıt University, Ankara, Türkiye.
| | - Füsun Yaşar
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Selcuk University, Konya, Türkiye
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Lee SJ, Alamri O, Cao H, Wang Y, Gallucci GO, Lee JD. Occlusion as a predisposing factor for peri-implant disease: A review article. Clin Implant Dent Relat Res 2023; 25:734-742. [PMID: 36373771 DOI: 10.1111/cid.13152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/23/2022] [Accepted: 10/25/2022] [Indexed: 08/04/2023]
Abstract
BACKGROUND The restoration of dental implants presents a unique challenge due to the intrinsic biomechanical differences between osseointegrated implants and natural teeth, and their subsequent responses to occlusal loading. However, controversy exists regarding the role that occlusion plays in the physiology of the peri-implant complex. PURPOSE To provide an overview of the scientific literature regarding occlusion as it relates to implant dentistry and peri-implant disease. MATERIALS AND METHODS This article presents a narrative review on occlusal loading and its potential effects on the peri-implant complex, as well as some generally accepted guidelines for occlusion in implant dentistry. RESULTS AND CONCLUSIONS Although there is strong evidence linking occlusal factors to mechanical complications of dental implants, the same cannot be said regarding biological complications. There is no clear scientific evidence on the relationship between occlusal overload and peri-implant disease. However, occlusal overload may be an accelerating factor for peri-implant disease in the presence of inflammation. As the biomechanical properties of dental implants differ from that of the natural dentition, modifications to classic concepts of occlusion may be necessary when dental implants are involved. Thus, clinical recommendations are proposed which function to minimize unfavorable occlusal forces on implant restorations and reduce the associated biological and mechanical complications.
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Affiliation(s)
- Sang J Lee
- Department of Restorative Dentistry and Biomaterial Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Osamah Alamri
- Department of Restorative Dentistry and Biomaterial Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Huilin Cao
- Department of Restorative Dentistry and Biomaterial Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Yujun Wang
- Department of Restorative Dentistry and Biomaterial Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - German O Gallucci
- Department of Restorative Dentistry and Biomaterial Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Jason D Lee
- Department of Restorative Dentistry and Biomaterial Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA
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Unal Erzurumlu Z, Sadik E, Gokkurt BN, Ozbey F, Erzurumlu K, Kasko Arici Y. Morphological evaluation of gonial and antegonial regions in bruxers on panoramic radiographic images. BMC Oral Health 2023; 23:457. [PMID: 37420199 PMCID: PMC10327333 DOI: 10.1186/s12903-023-03162-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 06/22/2023] [Indexed: 07/09/2023] Open
Abstract
BACKGROUND This is the first study to report both cortical and trabecular bone evaluation of mandibles in bruxers, within the knowledge of the authors. The purpose of this study was to evaluate the effects of bruxism on both the cortical and the trabecular bone in antegonial and gonial regions of the mandible, which is the attachment of the masticatory muscles, by using panoramic radiographic images. METHODS In this study, the data of 65 bruxer (31 female, 34 male) and 71 non-bruxer (37 female, 34 male) young adult patients (20-30 years) were evaluated. Antegonial Notch Depth (AND), Antegonial-Index (AI), Gonial-Index, Fractal Dimension (FD) and Bone Peaks (BP) were evaluated on panoramic radiographic images. The effects of the bruxism, gender and side factors were investigated according to these findings. The statistical significance level was set atP ≤ 0.05. RESULTS The mean AND of bruxers (2.03 ± 0.91) was significantly higher than non-bruxers (1.57 ± 0.71; P < 0.001). The mean AND of males was significantly higher than females on both sides (P < 0.05). The mean AI of bruxers (2.95 ± 0.50) was significantly higher than non-bruxers (2.77 ± 0.43; P = 0.019). The mean FD on each side was significantly lower in bruxers than in non-bruxers (P < 0.05). The mean FD of males (1.39 ± 0.06) was significantly higher than females (1.37 ± 0.06; P = 0.049). BP were observed in 72.5% of bruxers and 27.5% of non-bruxers. The probability of existing BP, in bruxers was approximately 3.4 times higher than in non-bruxers (P = 0.003), in males was approximately 5.5 times higher than in females (P < 0.001). CONCLUSION According to the findings of this study, the morphological differences seen in cortical and trabecular bone in the antegonial and gonial regions of the mandible in bruxers can be emphasized as deeper AND, higher AI, increased of existing BPs, and lower FD, respectively. The appearance of these morphological changes on radiographs may be useful for indication and follow-up of bruxism. Gender is an effective factor on AND, existing BP and FD.
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Affiliation(s)
- Zerrin Unal Erzurumlu
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ordu University, Ordu, 52200, Turkey
| | - Elif Sadik
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ordu University, Ordu, 52200, Turkey
| | - Busra Nur Gokkurt
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ordu University, Ordu, 52200, Turkey
| | - Furkan Ozbey
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ordu University, Ordu, 52200, Turkey.
| | - Kerem Erzurumlu
- Computer Science and Engineer, Department of Computer Programming, Vocational School of Technical Sciences, Ordu University, Ordu, Turkey
| | - Yeliz Kasko Arici
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Ordu University, Ordu, Turkey
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Lopes RFT, Palinkas M, Pádua da Silva G, Verri ED, Regalo IH, Gonçalves CR, Hallak JEC, Costa Gomes GG, Regalo SCH, Siéssere S. Stroke: An electromyographic approach to the masseter and temporal muscles, orofacial soft tissue pressure, and occlusal force. PLoS One 2023; 18:e0282362. [PMID: 36857404 PMCID: PMC9976995 DOI: 10.1371/journal.pone.0282362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 02/13/2023] [Indexed: 03/02/2023] Open
Abstract
Stroke is a cerebrovascular disease that triggers changes in the central and peripheral nervous systems, and can compromise human body function. This cross-sectional observational study aimed to analyze the electromyographic (EMG) activity of the masseter and temporal muscles, orofacial soft tissue pressure, and strength of occlusal contacts in patients who had suffered a stroke. Twenty-four patients were divided into two groups: stroke (n = 12) and control (n = 12). The EMG of the masseter and temporal muscles was evaluated during mandibular rest, protrusion, right laterality, left laterality, and maximal voluntary contraction. The Iowa Oral Pressure Instrument (IOPI) was used to measure pressure from the tongue, lips, and buccinator muscles. A computerized system for occlusal analysis (T-Scan III) was used to measure the occlusal contact points of the right and left hemiarches (upper and lower) and the upper and lower first molars. Data were subjected to Student's t-test (p < 0.05). The stroke group had lower normalized electromyographic activity, with a significant difference in the left temporal muscle during rest (p = 0.03) when compared to the control group. There was a significant difference between the groups in tongue pressure (p = 0.004) with a lower mean value in the stroke group. There was a significant difference between the groups in the evaluation of the occlusal contact points of the first permanent molars, with a lower mean percentage in the stroke group. The results indicate that stroke negatively affects functional performance of the stomatognathic system.
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Affiliation(s)
- Robson Felipe Tosta Lopes
- Department of Basic and Oral Biology, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Marcelo Palinkas
- Department of Basic and Oral Biology, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
- Faculty of Medicine of Ribeirão Preto, Department of Neuroscience and Behavioral Sciences, University of São Paulo and National Institute and Technology—Translational Medicine (INCT.TM), São Paulo, Brazil
- * E-mail:
| | - Gabriel Pádua da Silva
- Department of Basic and Oral Biology, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Edson Donizetti Verri
- Department of Basic and Oral Biology, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Isabela Hallak Regalo
- Department of Basic and Oral Biology, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Camila Rosa Gonçalves
- Department of Basic and Oral Biology, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Jaime Eduardo Cecilio Hallak
- Faculty of Medicine of Ribeirão Preto, Department of Neuroscience and Behavioral Sciences, University of São Paulo and National Institute and Technology—Translational Medicine (INCT.TM), São Paulo, Brazil
| | - Guilherme Gallo Costa Gomes
- Department of Basic and Oral Biology, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Simone Cecílio Hallak Regalo
- Department of Basic and Oral Biology, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
- Faculty of Medicine of Ribeirão Preto, Department of Neuroscience and Behavioral Sciences, University of São Paulo and National Institute and Technology—Translational Medicine (INCT.TM), São Paulo, Brazil
| | - Selma Siéssere
- Department of Basic and Oral Biology, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
- Faculty of Medicine of Ribeirão Preto, Department of Neuroscience and Behavioral Sciences, University of São Paulo and National Institute and Technology—Translational Medicine (INCT.TM), São Paulo, Brazil
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Carvalho MR, Regalo SCH, Siéssere S, Gonçalves LMN, de Paula-Silva FWG, Vicioni-Marques F, Nelson-Filho P, de Vasconcelos PB, de Carvalho FK, de Queiroz AM. Electromyographic analysis of the stomatognathic system of children with Molar-incisor hypomineralization. PLoS One 2023; 18:e0277030. [PMID: 36827292 PMCID: PMC9955966 DOI: 10.1371/journal.pone.0277030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 10/19/2022] [Indexed: 02/25/2023] Open
Abstract
INTRODUCTION Molar-incisor hypomineralization (MIH) is a qualitative defect of dental enamel that affects one or more permanent first molars, with or without involvement of the incisor teeth. This condition leads to challenges to dental care and treatment planning. AIM Based on the hypothesis that children who have MIH possibly present alterations in postural and masticatory activities and considering the absence of studies investigating these parameters, the present study evaluated the functionality of the stomatognathic system considering the mentioned aspects. MATERIALS The comparison of individuals with (MIHG; n = 32) and without MIH (CG; n = 32) was evaluated by electromyographic activity of the masseter and temporal muscles (right and left), as well as evaluation of the masticatory cycles during habitual mastication. RESULTS MIHG showed muscle hyperactivity in postural and dynamic conditions compared to the CG; higher electromyographic values for MIHG when compared to CG in the following postural conditions: at rest for the right temporal (p = 0.00) and left temporal muscles (p = 0.03); in the protrusion to the right temporal muscle (p = 0.02); in the right laterality for the right masseter (p = 0.00) and left temporal muscles (p = 0.01); in the left laterality for the right masseter (p = 0.03) and left temporal (p = 0.04) muscles. In dynamic conditions with consistent food, significance was observed for the left temporal (p = 0.01); and with soft food for the right (p = 0.01) and left temporal muscles (p = 0.04). CONCLUSIONS Children with MIH seem to have impaired functionality of the stomatognathic system. Children with MIH have alterations in the stomatognathic system.
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Affiliation(s)
| | - Simone Cecilio Hallak Regalo
- Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
- National Institute for Translational Medicine (INCT-TM), Ribeirão Preto, Brazil
| | - Selma Siéssere
- Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
- National Institute for Translational Medicine (INCT-TM), Ribeirão Preto, Brazil
| | | | | | | | - Paulo Nelson-Filho
- Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil
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Shear Wave Elastography in Bruxism-Not Yet Ready for Clinical Routine. Diagnostics (Basel) 2023; 13:diagnostics13020276. [PMID: 36673086 PMCID: PMC9857449 DOI: 10.3390/diagnostics13020276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/29/2022] [Accepted: 01/06/2023] [Indexed: 01/15/2023] Open
Abstract
Ultrasound shear wave elastography (SWE) is an emerging modality for the estimation of stiffness, but it has not been studied in relation to common disorders with altered stiffness, such as bruxism, which affects almost one-third of adults. Because this condition could lead to an increased stiffness of masticatory muscles, we investigated SWE in bruxism according to a proof-of-principle and feasibility study with 10 patients with known bruxism and an age- and gender-matched control group. SWE of the left and right masseter muscles was estimated under three conditions: relaxed jaw, 50% of the subjective maximal bite force, and maximal jaw opening. Rejecting the null hypothesis, SWE was significantly increased during relaxed jaw (bruxism 1.92 m/s ± 0.44; controls 1.66 m/s ± 0.24), whereas for maximal mouth opening, the result was vice versa increased with 2.89 m/s ± 0.93 for bruxism patients compared with 3.53 m/s ± 0.95 in the healthy control, which could be due to limited jaw movement in chronic bruxism patients (bruxism 4.46 m/s ± 1.17; controls 5.23 m/s ± 0.43). We show that SWE in bruxism is feasible and could be of potential use for diagnostics and monitoring, though we also highlight important limitations and necessary methodological considerations for future studies.
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Prasad S, Arunachalam S, Boillat T, Ghoneima A, Gandedkar N, Diar-Bakirly S. Wearable Orofacial Technology and Orthodontics. Dent J (Basel) 2023; 11:dj11010024. [PMID: 36661561 PMCID: PMC9858298 DOI: 10.3390/dj11010024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 12/19/2022] [Accepted: 12/30/2022] [Indexed: 01/12/2023] Open
Abstract
Wearable technology to augment traditional approaches are increasingly being added to the arsenals of treatment providers. Wearable technology generally refers to electronic systems, devices, or sensors that are usually worn on or are in close proximity to the human body. Wearables may be stand-alone or integrated into materials that are worn on the body. What sets medical wearables apart from other systems is their ability to collect, store, and relay information regarding an individual's current body status to other devices operating on compatible networks in naturalistic settings. The last decade has witnessed a steady increase in the use of wearables specific to the orofacial region. Applications range from supplementing diagnosis, tracking treatment progress, monitoring patient compliance, and better understanding the jaw's functional and parafunctional activities. Orofacial wearable devices may be unimodal or incorporate multiple sensing modalities. The objective data collected continuously, in real time, in naturalistic settings using these orofacial wearables provide opportunities to formulate accurate and personalized treatment strategies. In the not-too-distant future, it is anticipated that information about an individual's current oral health status may provide patient-centric personalized care to prevent, diagnose, and treat oral diseases, with wearables playing a key role. In this review, we examine the progress achieved, summarize applications of orthodontic relevance and examine the future potential of orofacial wearables.
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Affiliation(s)
- Sabarinath Prasad
- Department of Orthodontics, Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai 50505, United Arab Emirates
- Correspondence:
| | - Sivakumar Arunachalam
- Orthodontics and Dentofacial Orthopedics, School of Dentistry, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Thomas Boillat
- Design Lab, College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai 50505, United Arab Emirates
| | - Ahmed Ghoneima
- Department of Orthodontics, Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai 50505, United Arab Emirates
| | - Narayan Gandedkar
- Discipline of Orthodontics & Paediatric Dentistry, School of Dentistry, University of Sydney, Sydney, NSW 2006, Australia
| | - Samira Diar-Bakirly
- Department of Orthodontics, Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai 50505, United Arab Emirates
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Akat B, Görür SA, Bayrak A, Eren H, Eres N, Erkcan Y, Kılıçarslan MA, Orhan K. Ultrasonographic and electromyographic evaluation of three types of occlusal splints on masticatory muscle activity, thickness, and length in patients with bruxism. Cranio 2023; 41:59-68. [PMID: 32936747 DOI: 10.1080/08869634.2020.1820685] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To evaluate occlusal splint type differences in patients with bruxism. METHODS Seventeen controls and 51 patients were divided into three subgroups, each assigned to use a different occlusal splint (hard, soft, or semi-soft) for 3 months and assessed by ultrasonography and electromyography (EMG) before (BT) and 3 months after treatment (AT). RESULTS EMG values in all of the occlusal splint groups were significantly lower AT than BT (p < 0.05). BT and AT EMG values in the control group did not differ. Mean muscle thicknesses in bruxism patients was greater than in controls, and the greatest muscle thickness changes occurred with the hard occlusal splint (p < 0.05). DISCUSSION A decrease in EMG activity occurred with all three splint types and was most prominent in the hard occlusal splint group. Ultrasonographic measurements of muscle length and thickness should be used alongside EMG to measure muscle activity in bruxism patients.
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Affiliation(s)
- Bora Akat
- Department of Prosthodontics, Faculty of Dentistry, University of Ankara, Ankara, Turkey
| | - Sinem Atay Görür
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, University of Ankara, Ankara, Turkey
| | - Ayben Bayrak
- Department of Prosthodontics, Faculty of Dentistry, University of Ankara, Ankara, Turkey
| | - Hakan Eren
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, University of Ankara, Ankara, Turkey
| | - Necati Eres
- Department of Prosthodontics, Faculty of Dentistry, University of Lokman Hekim, Ankara, Turkey
| | - Yezdan Erkcan
- Department of Prosthodontics, Faculty of Dentistry, University of Ankara, Ankara, Turkey
| | - Mehmet Ali Kılıçarslan
- Department of Prosthodontics, Faculty of Dentistry, University of Ankara, Ankara, Turkey
| | - Kaan Orhan
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, University of Ankara, Ankara, Turkey
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Yazici G, Kafa N, Kolsuz ME, Volkan-Yazici M, Evli C, Orhan K. Evaluation of single session physical therapy methods in bruxism patients using shear wave ultrasonography. Cranio 2023; 41:41-47. [PMID: 32840458 DOI: 10.1080/08869634.2020.1812817] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To compare the immediate effects of a single session of manual therapy (MT) or Kinesio taping following MT (KTMT) in patients with bruxism using shear wave ultrasonography. METHODS Twenty patients were included in the MT group (mean age 27.3 ± 4.8), and 19 patients were included in the KTMT group (age mean 26.2 ± 5.4), randomly. Muscle thickness and stiffness were assessed via shear wave ultrasonography, and pain pressure threshold was assessed with an algometer before and after one session of MT or KTMT. RESULTS Significant decreases were found in muscle thickness and stiffness of the bilateral masseter (p < 0.05). Significant decrease in pain was seen in the masseter and temporalis muscle PPT measurements in the KTMT group (p < 0.05) only. CONCLUSION Kinesio taping in addition to MT is recommended in the immediate physiotherapy treatment of bruxism for acute pain.
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Affiliation(s)
- Gokhan Yazici
- Faculty of Health Sciences, Department of Physical Therapy and Rehabilitation, Gazi University, Ankara, Turkey
| | - Nihan Kafa
- Faculty of Health Sciences, Department of Physical Therapy and Rehabilitation, Gazi University, Ankara, Turkey
| | - Mehmet Eray Kolsuz
- Faculty of Dentistry, Department of Dentomaxillofacial Radiology, Ankara University, Ankara, Turkey
| | - Melek Volkan-Yazici
- Faculty of Health Sciences, Department of Physical Therapy and Rehabilitation, Yuksek Ihtisas University, Ankara, Turkey
| | - Cengiz Evli
- Faculty of Dentistry, Department of Dentomaxillofacial Radiology, Ankara University, Ankara, Turkey
| | - Kaan Orhan
- Faculty of Dentistry, Department of Dentomaxillofacial Radiology, Ankara University, Ankara, Turkey
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Ispir NG, Toraman M. The relationship of masseter muscle thickness with face morphology and parafunctional habits: an ultrasound study. Dentomaxillofac Radiol 2022; 51:20220166. [PMID: 35926082 PMCID: PMC9717398 DOI: 10.1259/dmfr.20220166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE The aim of this study was to determine the normal range of masseter muscle thickness by ultrasonographic measurement in individuals over 15 years of age, and to evaluate its relationship with age, gender, facial morphology, body mass index and parafunctional habits. METHODS The study was conducted on 115 volunteers whose lateral cephalometric radiography was performed within the indication in Gazi University Faculty of Dentistry, Department of Dentomaxillofacial Radiology. The participants in the study were asked questions about their parafunctional habits, age, height and weight. Individuals were grouped as hypodivergent (n = 28), normdivergent (n = 55), or hyperdivergent (n = 32) according to vertical face morphology by making measurements on lateral cephalometric films. Right and left masseter muscle thicknesses of individuals were measured by ultrasonography while at rest and in contraction. RESULTS The mean value of masseter muscle thickness was found to be 13.57 ± 2.57 mm. The rest and contracted muscle thicknesses were significantly higher in males than in females for the right and left masseter muscles (p < 0.05). When the masseter muscle was at rest and contracted, its thickness was higher in individuals with hypodivergent facial morphology, than in the other groups. No statistically significant difference was found in terms of masseter muscle thickness between individuals having parafunctional habits and those who did not have parafunctional habits (p > 0.05). CONCLUSION Although masseter muscle thickness varied according to vertical facial morphology, this was not the case for parafunctional habits.
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Affiliation(s)
- Nebiha Gozde Ispir
- Department of Dentomaxillofacial Radiology, Gazi University, Ankara, Turkey
| | - Meryem Toraman
- Department of Dentomaxillofacial Radiology, Gazi University, Ankara, Turkey
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Lan KW, Jiang LL, Yan Y. Comparative study of surface electromyography of masticatory muscles in patients with different types of bruxism. World J Clin Cases 2022; 10:6876-6889. [PMID: 36051132 PMCID: PMC9297420 DOI: 10.12998/wjcc.v10.i20.6876] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/22/2022] [Accepted: 05/22/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Bruxism is a rhythmic masticatory muscle activity that occurs involuntarily in a non-physiologically functional state. There is a lack of research classifying the functional status of masticatory muscles in patients with different mandibular movement types (centric clenching or eccentric grinding) of bruxism.
AIM To assess the differences of the masticatory muscle activity in patients with different types of bruxism.
METHODS A total of 21 subjects with centric bruxism (CB) and 21 subjects with eccentric bruxism (ECB) were screened from college students according to a questionnaire and their tooth wear features. Sixteen subjects with no bruxism were also recruited. The surface electromyography (EMG) signals of the temporalis anterior (TA) and superficial masseter muscle (MM) were measured in different mandibular positions and during the chewing task. The EMG amplitude and chewing cycle duration parameters were then analyzed.
RESULTS The CB group showed fewer muscle maximal motor units, with the MM being more pronounced, a higher proportion of muscle contractions to be recruited for the same load of chewing activity, and a longer chewing cycle. The ECB group showed more TA maximal motor units and higher MM activity on the non-working side in unilateral chewing.
CONCLUSION CB mainly affects the MM, and patients with CB show reduced masticatory muscle contraction efficiency and chewing cycle efficiency. ECB mainly affects the TA, and patients with ECB show enhanced contraction of non-functional lateral muscle bundles.
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Affiliation(s)
- Kai-Wen Lan
- Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Guangzhou 510080, Guangdong Province, China
| | - Liu-Lin Jiang
- Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Guangzhou 510080, Guangdong Province, China
| | - Ying Yan
- Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Guangzhou 510080, Guangdong Province, China
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Pauletto P, Polmann H, Conti Réus J, Massignan C, de Souza BDM, Gozal D, Lavigne G, Flores-Mir C, De Luca Canto G. Sleep bruxism and obstructive sleep apnea: association, causality or spurious finding? A scoping review. Sleep 2022; 45:6571501. [DOI: 10.1093/sleep/zsac073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 02/26/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study Objectives
To evaluate the available evidence on the putative relationships between sleep bruxism (SB) and, obstructive sleep apnea (OSA) to assess the extent of research on this topic, and to formulate suggestions for future research.
Methods
A scoping review including studies examining temporal and overall association and prevalence of SB and OSA was performed. Six main databases and gray literature were searched. The studies selection was conducted by three independent reviewers. A narrative synthesis of the results was carried out.
Results
Thirteen studies in adults and eight studies in children were finally included. The median of concomitant conditions prevalence was 39.3% in adults and 26.1% in children. Marked methodological variability was identified among studies in adults and even more when we compared detection methods in children. No significant association between OSA and SB emerged in most studies in adults, while an association may be possible in children.
Conclusions
Based on the current literature, it is not possible to confirm that there is a relationship between SB and OSA in adults. In patients under pediatric care, although this association seems plausible, there is currently insufficient supportive evidence. Standardized validated methodologies for identifying SB should be consistently used in both populations before reaching any conclusion regarding such association. Furthermore, assessment of shared phenotypes between patients with SB and patients with OSA may reveal new insights that will contribute to personalized approaches aiming to optimize the management of such comorbidities.
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Affiliation(s)
- Patrícia Pauletto
- Department of Dentistry, Federal University of Santa Catarina , Florianópolis , Brazil
- Brazilian Centre for Evidence-Based Research (COBE), Federal University of Santa Catarina , Florianópolis , Brazil
| | - Helena Polmann
- Department of Dentistry, Federal University of Santa Catarina , Florianópolis , Brazil
- Brazilian Centre for Evidence-Based Research (COBE), Federal University of Santa Catarina , Florianópolis , Brazil
| | - Jéssica Conti Réus
- Department of Dentistry, Federal University of Santa Catarina , Florianópolis , Brazil
- Brazilian Centre for Evidence-Based Research (COBE), Federal University of Santa Catarina , Florianópolis , Brazil
| | - Carla Massignan
- Brazilian Centre for Evidence-Based Research (COBE), Federal University of Santa Catarina , Florianópolis , Brazil
- Department of Dentistry, University of Brasília , Brasília , Brazil
| | | | - David Gozal
- Department of Child Health, University of Missouri , Columbia, Missouri , United States
| | - Gilles Lavigne
- Department of Dentistry, Faculty of Dental Medicine, Université de Montreal, Montréal , Canada
| | | | - Graziela De Luca Canto
- Department of Dentistry, Federal University of Santa Catarina , Florianópolis , Brazil
- Brazilian Centre for Evidence-Based Research (COBE), Federal University of Santa Catarina , Florianópolis , Brazil
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Yalcin ED, Aslan Ozturk EM. Ultrasonographic evaluation of the effect of splint therapy on masseter muscle and blood flow in patients with bruxism. Cranio 2022:1-9. [PMID: 35816105 DOI: 10.1080/08869634.2022.2088575] [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: 10/17/2022]
Abstract
OBJECTIVE To investigate the effect of splint therapy on masseter muscle and blood flow in patients with bruxism using ultrasonography (USG). METHODS Twenty female patients with bruxism receiving splint treatment were studied. Masseter thickness and elasticity were assessed using gray-scale USG and shear-wave elastography (kPa) at rest and maximum clenching. Blood flow parameters of external carotid artery (ECA), maxillary, facial, mental artery were examined using Doppler USG before and after splint application. RESULTS Thickness and elasticity of masseter muscle was statistically significantly decreased at rest after splint therapy (p < 0.05). Significant difference was determined only in some parameters of ECA and maxillary artery in Doppler USG before and after splint (p < 0.05); there was no difference for facial and mental artery (p > 0.05). CONCLUSION Thickness and elasticity of masseter muscle were significantly decreased after splint therapy. USG can measure muscle activity and blood flow in bruxism patients.
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Affiliation(s)
- Eda Didem Yalcin
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Dokuz Eylul University, Izmir, Turkey
| | - Elif Meltem Aslan Ozturk
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Gaziantep University, Sehitkamil, Turkey
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16
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Kobayashi FY, Castelo PM, Politti F, Rocha MM, Beltramin RZ, Salgueiro MDCC, Gonçalves MLL, Nammour S, Brugnera Júnior A, Sfalcin RA, Bussadori SK. Immediate Evaluation of the Effect of Infrared LED Photobiomodulation on Childhood Sleep Bruxism: A Randomized Clinical Trial. Life (Basel) 2022; 12:life12070964. [PMID: 35888053 PMCID: PMC9323984 DOI: 10.3390/life12070964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/03/2022] [Accepted: 06/14/2022] [Indexed: 11/23/2022] Open
Abstract
The gold standard for the management of sleep bruxism (SB) is the use of a rigid occlusal splint; however, there are limitations for its use in children and alternatives to the management of SB are needed. Photobiomodulation therapy has been used with positive results in temporomandibular disorders. This study aimed to evaluate the effects of photobiomodulation therapy with infrared LED in children with SB. Thirty children were divided into three groups: Group 1: control/absence of bruxism (n = 10); Group 2: SB treated with infrared LED (n = 10); Group 3: SB treated with occlusal splint (n = 10). Electromyographic evaluation of masseter, anterior temporalis, and upper trapezius, and salivary dopamine levels were assessed before and after treatments. Data were statistically analyzed using two-way mixed model ANOVA. An increase in the temporalis and right masseter EMG activity at rest was observed in Group 3, with large effect size (p < 0.05). Left masseter and temporalis EMG activity did not differ over time in the LED group, similar to the control group. Moreover, the EMG activity of masticatory muscles during chewing and upper trapezius muscle did not differ over time in all groups. The results also pointed to a difference in the levels of dopamine between children with and without SB, with Group 3 showing higher levels in the pre-treatment time compared to controls (p < 0.025). In conclusion, an increase in the masticatory muscles activity at rest was observed in children undergoing splint therapy. Moreover, a difference in the levels of salivary dopamine was found between children with and without SB.
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Affiliation(s)
- Fernanda Yukie Kobayashi
- Postgraduation Program in Biophotonics Applied to Health Sciences, Universidade Nove de Julho (UNINOVE), São Paulo 01525-000, Brazil; (F.Y.K.); (R.A.S.)
| | - Paula Midori Castelo
- Department of Pharmaceutical Sciences, Universidade Federal de São Paulo (UNIFESP), Diadema 04021-001, Brazil;
| | - Fabiano Politti
- Postgraduation Program in Rehabilitation Sciences, Universidade Nove de Julho (UNINOVE), São Paulo 01525-000, Brazil; (F.P.); (M.M.R.); (R.Z.B.); (M.D.C.C.S.)
| | - Monise Mendes Rocha
- Postgraduation Program in Rehabilitation Sciences, Universidade Nove de Julho (UNINOVE), São Paulo 01525-000, Brazil; (F.P.); (M.M.R.); (R.Z.B.); (M.D.C.C.S.)
| | - Rafael Zaratin Beltramin
- Postgraduation Program in Rehabilitation Sciences, Universidade Nove de Julho (UNINOVE), São Paulo 01525-000, Brazil; (F.P.); (M.M.R.); (R.Z.B.); (M.D.C.C.S.)
| | - Mônica Da Consolação Canuto Salgueiro
- Postgraduation Program in Rehabilitation Sciences, Universidade Nove de Julho (UNINOVE), São Paulo 01525-000, Brazil; (F.P.); (M.M.R.); (R.Z.B.); (M.D.C.C.S.)
| | - Marcela Leticia Leal Gonçalves
- Postgraduation Program in Health and Environment, Universidade Metropolitana de Santos (UNIMES), Santos 11045-002, Brazil;
| | - Samir Nammour
- Director of the Post-Graduate: Laser Application in Dental Medicine, Department of Dental Sciences, Faculty of Medicine, University of Liege, 4000 Liège, Belgium;
| | - Aldo Brugnera Júnior
- National Institute of Science and Technology, INCT “Basic Optics Applied to Life Sciences”, IFSC, USP, São Carlos 13566-590, Brazil;
| | - Ravana Angelini Sfalcin
- Postgraduation Program in Biophotonics Applied to Health Sciences, Universidade Nove de Julho (UNINOVE), São Paulo 01525-000, Brazil; (F.Y.K.); (R.A.S.)
| | - Sandra Kalil Bussadori
- Postgraduation Program in Biophotonics Applied to Health Sciences, Universidade Nove de Julho (UNINOVE), São Paulo 01525-000, Brazil; (F.Y.K.); (R.A.S.)
- Correspondence: ; Tel.: +55-(11)-3385-9222
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17
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Wasinwasukul P, Nalamliang N, Pairatchawan N, Thongudomporn U. Effects of anterior bite planes fabricated from acrylic resin and thermoplastic material on masticatory muscle responses and maximum bite force in children with a deep bite: a 6-month randomized controlled trial. J Oral Rehabil 2022; 49:980-992. [PMID: 35730261 DOI: 10.1111/joor.13351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 06/05/2022] [Accepted: 06/16/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Anterior bite planes are bite-raising appliances used for deep bite correction. However, muscle responses to anterior bite planes of different hardnesses may vary. OBJECTIVES To prospectively evaluate masticatory muscle activity, muscle balance, and maximum bite force (MBF) responses to anterior bite planes fabricated from acrylic resin (ABP) or bi-laminate thermoplastic (TBP) over 6 months in children with a deep bite. METHODS Sixty-six children were randomly assigned to the ABP, TBP, or untreated control groups. Masticatory muscle activity, activity index (AC), and percentage overlapping coefficient (POC) were assessed by surface electromyography; MBF, using a custom-made bite force sensor. Data were collected before, immediately after appliance insertion, and after 2 weeks and 1, 3, and 6 months of treatment. Within- and between-group differences were analyzed using one-way ANOVA/Kruskal-Wallis and Mann Whitney U-tests (α=0.05); Friedman's tests were used to assess within-group differences over time (α=0.08). RESULTS At rest, no dependent variables changed throughout the study. At maximum clenching, masticatory muscle activity immediately dropped significantly but returned to baseline values and was equal to the control group at 1-3 months. The ABP group had significantly lower masseter activity and AC than the TBP group after insertion. Neither POC nor MBF were significantly different within or between groups. CONCLUSION Masticatory muscle activity reduced after anterior bite plane insertion but returned to baseline after 1-3 months. Masseter activity decreased significantly more in the ABP group than TBP group. Neither appliance significantly affected POC or MBF.
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Affiliation(s)
- Passakorn Wasinwasukul
- Orthodontic section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Napat Nalamliang
- Department of Occlusion, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nalin Pairatchawan
- Orthodontic section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Udom Thongudomporn
- Orthodontic section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
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Fathy S, Abdelrhman IG, Aggour RL. Ultrasonographic evaluation of the masseter muscle in temporomandibular disorders patients with myofascial pain: A case-control observational study. Cranio 2022:1-7. [PMID: 35616982 DOI: 10.1080/08869634.2022.2080961] [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: 10/18/2022]
Abstract
OBJECTIVE To investigate ultrasonographic changes of masseter muscle (MM) in patients with myofascial pain disorder (MPD) and possible correlations with clinical features. METHODS The study included 20 MPD patients and 20 healthy volunteers. Masseter muscle thickness (MMT) and the echogenic pattern were ultrasonographically evaluated. The maximum interincisal opening (MIO), duration of symptoms, and pain level were evaluated for correlations with MMT. RESULTS At relaxation, MMT was greater in the test group (p < 0.05); however, the percentage of increase in MMT from relaxation to contraction was greater in controls (p < 0.05). In MPD patients, the echogenic pattern differed significantly from controls. In MPD patients, a strong positive correlation was found between MMT and pain level, while a moderate negative correlation was found between MMT and both the duration of symptoms and MIO. CONCLUSION Ultrasound is an adjunctive method for complementing the assessment of the MM condition in MPD patients.
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Affiliation(s)
- Shereen Fathy
- Department of Oral Medicine & Periodontology, Faculty of Dentistry, October 6 University, Giza, Egypt
| | | | - Reham Lotfy Aggour
- Department of Oral Medicine & Periodontology, Faculty of Dentistry, October 6 University, Giza, Egypt
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ŞATIR Ö, ŞATIR S. Temporomandibular Joint Disease and Vitamin D Level in Fibromyalgia. CUMHURIYET DENTAL JOURNAL 2022. [DOI: 10.7126/cumudj.1030953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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20
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Temporomandibular disorders in patients with polysomnographic diagnosis of sleep bruxism: a case-control study. Sleep Breath 2021; 26:941-948. [PMID: 34365593 DOI: 10.1007/s11325-021-02449-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/20/2021] [Accepted: 07/14/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Temporomandibular disorders (TMD) is a collective term that refers to complaints of temporomandibular joint (TMJ) pain, fatigue and/or pain of the craniocervical muscles, limitation of movement of the mandible, and TMJ noises. Sleep bruxism (SB) is a disorder involving rhythmic (phasic) or non-rhythmic (tonic) masticatory muscle activity during sleep and is not a movement disorder or a sleep disorder in otherwise healthy individuals. The present study aimed to support or reject the null hypothesis that there is no association between SB and TMD. METHODS The study population was recruited from patients who visited the Artmedica Clinic, Mossoro city, Rio Grande do Norte, Brazil. Patients who underwent polysomnography received information about the research and were invited to participate following the inclusion and exclusion criteria. The study sample consisted of 40 individuals with age ranging from 19 to 76 years. The subjects were administered the questionnaire of the European Academy of Craniomandibular Disorders (AEDC). Those who answered affirmatively to at least one question of the questionnaire were recommended to visit the primary researcher's dental clinic for examination; those who met the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) were evaluated, and their condition was classified into one or more subtypes of TMD. The subjects were divided into 4 groups according to the polysomnographic findings and the responses to the AEDC questionnaire. Of the 40 individuals who answered the AEDC questionnaire and underwent polysomnography, 28 presented with TMD symptoms. The data were expressed as simple frequency and percentage values using statistical software. Values of p < 0.05 were considered to be significant. RESULTS The results showed that the frequency of TMD in individuals diagnosed to have SB was 46.4%. According to the DC/TMD of the 28 individuals, the most prevalent TMD subtype was local myalgia (85.7%). Of the total subjects, 32.5% had TMD and SB, 36.4% were males, and in the age range of 31 to 40 years (40%). CONCLUSION In this study sample, there was no association between SB as currently defined and TMD, thus confirming previous findings on this topic.
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Lee SKY, Salinas TJ, Wiens JP. The Effect of Patient Specific Factors on Occlusal Forces Generated: Best Evidence Consensus Statement. J Prosthodont 2021; 30:52-60. [PMID: 33474770 DOI: 10.1111/jopr.13334] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
PURPOSE The purpose of this Best Evidence Consensus Statement was to search the literature to determine if there is a relationship between patient specific factors and occlusal force. MATERIALS AND METHODS A literature review was conducted in the following databases: Evidence-Based Medicine Reviews (EBMR), Cochrane Database of Systematic Reviews, Embase, and Ovid MEDLINE(R) and Epub Ahead of Print. Articles on patient factors and occlusal force were compiled by using a combination of the key words: "bite force," "occlusal force," "partial and complete edentulism," "bruxism," and "orthognathic class." Inclusion criteria included meta-analyses, systematic reviews, randomized controlled trials, case series, and journal articles. Exclusion criteria were case reports, studies in children, animals, and bench studies. RESULTS Of the 1502 articles that met the initial search criteria, 97 related to patient-specific factors affecting occlusal forces. These articles were evaluated, rated, and organized into appropriate categories addressing questions of foci. CONCLUSIONS The range of occlusal force is highly variable among subjects correlated to patient specific factors such as age, gender, partial and complete edentulism, the presence of a maxillofacial defect, location of edentulous area, orthognathic profile, and magnitude of occlusal vertical dimension. Tooth replacement therapies targeted at increasing occlusal contact seem to have a positive effect on increasing occlusal force. Bruxism does not necessarily demonstrate higher occlusal powering but may have greater tooth contact time. Occlusal force is not clearly affected by the type of dental restoration or restorative material used. The clinical significance of the changes in occlusal forces is yet to be determined.
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Affiliation(s)
| | | | - Jonathan P Wiens
- Department of Restorative Dentistry, University of Detroit Mercy School of Dentistry, Detroit, MI
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22
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Effects of rehabilitation with complete dentures on bite force and electromyography of jaw and neck muscles and the correlation with occlusal vertical dimension. Clin Oral Investig 2021; 25:4691-4698. [PMID: 33442778 DOI: 10.1007/s00784-021-03783-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 01/06/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVES The purpose of this study was to assess the effects of oral rehabilitation with complete dentures on bite force and electromyography of the suprahyoid and sternocleidomastoid muscles, and their correlation with occlusal vertical dimension (OVD). The research questions were "What are the effects of rehabilitation with complete dentures on bite force and electromyography of suprahyoid and sternocleidomastoid muscles, and how are they correlated with OVD?" MATERIALS AND METHODS Patients who are wearers of unsatisfactory removable complete dentures were attended in three sessions (T0, T1, and T2). At T0, while the patients still wore the old dentures, they were submitted to bite force and surface electromyographic exams of the suprahyoid and sternocleidomastoid muscles. These exams were repeated, and the OVD was measured while the patients wore their old and new prostheses, 30 days after insertion of the new prosthesis (T1). The exams were repeated 100 days after the insertion of the new prosthesis (T2). The data were submitted to the Shapiro-Wilk normality test, analysis of variance (ANOVA), and Pearson correlation and linear regression, all with 5% significance. RESULTS Fifteen patients participated in the study. No statistically significant difference was observed for bite force or electromyography in T0, T1, or T2. However, the correlation and regression tests showed important interactions between the OVD and maximum voluntary occlusal bite force, as well as the OVD and electromyography during deglutition for the suprahyoid muscles. CONCLUSION Rehabilitation did not impact bite force nor the activity of the assessed muscles (electromyography). On the other hand, OVD was shown to be an important factor for bite force, and deglutition of water after rehabilitation. CLINICAL RELEVANCE This study shows what are the influences of rehabilitation on oral functions and reinforces the importance of corrected reestablishment of OVD because it has been found to be an important factor for bite force and electromyography during deglutition.
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23
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Righetti MA, Taube OLS, Palinkas M, Gonçalves LMN, Esposto DS, de Mello EC, Regalo IH, Regalo SCH, Siéssere S. Osteoarthrosis: Analyze of the Molar Bite Force, Thickness and Masticatory Efficiency. Prague Med Rep 2020; 121:87-95. [PMID: 32553092 DOI: 10.14712/23362936.2020.7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Osteoarthrosis is a disorder of synovial joints, resulting from destruction of the cartilage and subchondral bone. The present study is aimed to investigate the molar bite force, thickness and efficiency of the masseter and temporalis muscles of subjects with osteoarthrosis. A total of forty-eight subjects participated in the study. They were distributed into two groups: with osteoarthrosis (n=24) and asymptomatic controls (n=24). Subjects were analyzed on the basis of maximal molar bite force (right and left side), thickness (mandibular rest and dental clenching in maximal voluntary contraction) and electromyographic activity of masticatory cycles through the linear envelope integral in habitual (raisins and peanuts) and non-habitual (Parafilm M) chewing of the masseter and temporalis muscles. All the data were analyzed statistically using t-test with a significance level of p≤0.05. There was no difference between groups in maximal molar bite force, muscle thickness and non-habitual chewing. Differences were found on the raisins (p=0.02) and peanuts (p=0.05) chewing for right temporal muscle, with reduced masticatory muscle efficiency in osteoarthrosis subjects. This study showed that osteoarthrosis induces negative changes in habitual chewing, highlighting the efficiency of the right temporalis muscles. The greater temporal muscle activity in subjects with osteoarthrosis may compromise chewing and consequently the nutritional status of adult subjects.
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Affiliation(s)
| | | | - Marcelo Palinkas
- Anhanguera Faculty, Ribeirão Preto, São Paulo, Brazil. .,National Institute and Technology - Translational Medicine (INCT.TM), São Paulo, Brazil. .,School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.
| | | | | | | | | | - Simone Cecilio Hallak Regalo
- National Institute and Technology - Translational Medicine (INCT.TM), São Paulo, Brazil.,School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Selma Siéssere
- National Institute and Technology - Translational Medicine (INCT.TM), São Paulo, Brazil.,School of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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Taşdemir Z, Etöz M, Köy Ö, Soydan D, Alkan A. Masseter muscle thickness and elasticity in periodontitis. J Oral Sci 2019; 62:43-47. [PMID: 31708551 DOI: 10.2334/josnusd.18-0341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
This study aimed to compare the thickness and elasticity of the masseter muscle between patients with gingivitis and patients with periodontitis. A total of 124 patients (63 gingivitis, 61 chronic periodontitis) were recruited at the start of the study, but only 84 patients were declared as final participants. Patients were divided into two groups: (1) patients suffering from gingivitis and (2) those with generalized chronic periodontitis. Clinical (PI, plaque index; GI, gingival index; PD, probing depth; CAL, clinical attachment loss; and BOP, bleeding on probing scores) and ultrasonographic (thickness and elasticity of the masseter muscle) measurements of periodontitis were performed. There were no significant differences in gender, age, body mass index, education status, income level, or marital status between the two groups (P > 0.05). The mean age ± SD for the gingivitis and periodontitis groups was 39.5 ± 10.8 years and 44.8 ± 8.8 years, respectively. There were significant differences between the two groups in the number of PI, GI, PD, CAL, and BOP scores. There were significant differences between the two groups when thickness of masseter during contraction and at rest was taken into account. The gingivitis group had significantly thicker masseter during both contraction and rest. On the other hand, when the elasticity of the masseter was evaluated, there were no significant differences found between the two groups and two sides for each group. Masseter muscle thickness in the periodontitis group was found to be decreased compared with that in the gingivitis group. Furthermore, loss of periodontal tissues due to periodontitis reduces the masticatory ability.
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Affiliation(s)
- Zekeriya Taşdemir
- Department of Periodontology, Faculty of Dentistry, Erciyes University
| | - Meryem Etöz
- Department of Oral Radiology, Faculty of Dentistry, Erciyes University
| | - Özge Köy
- Department of Periodontology, Faculty of Dentistry, Erciyes University
| | - Damla Soydan
- Department of Oral Radiology, Faculty of Dentistry, Erciyes University
| | - Arzu Alkan
- Department of Periodontics, Faculty of Dentistry, Bezm-i Alem University
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25
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Adisen MZ, Okkesim A, Misirlioglu M, Yilmaz S. Does sleep bruxism affect masticatory muscles volume and occlusal force distribution in young subjects? A preliminary study. Cranio 2019; 37:278-284. [DOI: 10.1080/08869634.2018.1450180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Mehmet Zahit Adisen
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kirikkale University, Kirikkale, Turkey
| | - Alime Okkesim
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kirikkale University, Kirikkale, Turkey
| | - Melda Misirlioglu
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kirikkale University, Kirikkale, Turkey
| | - Selmi Yilmaz
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
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26
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Donizetti Verri E, da Silva GP, Marianetti Fioco E, Soares da Silva N, Valin Fabrin SC, Augusto Bueno Zanella C, Roberta Garrefa C, Faria Júnior M, Siéssere S, Hallak JEC, Palinkas M, Chaves TC, Regalo SCH. Effects of Parkinson's disease on molar bite force, electromyographic activity and muscle thickness of the masseter, temporal and sternocleidomastoid muscles: A case‐control study. J Oral Rehabil 2019; 46:912-919. [DOI: 10.1111/joor.12824] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 04/10/2019] [Accepted: 05/26/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Edson Donizetti Verri
- Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto University of São Paulo São Paulo Brazil
- Department of Physiotherapy Batatais Claretiano Center University São Paulo Brazil
| | - Gabriel Pádua da Silva
- Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto University of São Paulo São Paulo Brazil
| | - Evandro Marianetti Fioco
- Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto University of São Paulo São Paulo Brazil
- Department of Physiotherapy Batatais Claretiano Center University São Paulo Brazil
| | - Nayara Soares da Silva
- Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto University of São Paulo São Paulo Brazil
| | - Saulo César Valin Fabrin
- Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto University of São Paulo São Paulo Brazil
| | | | - Camila Roberta Garrefa
- Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto University of São Paulo São Paulo Brazil
| | - Milton Faria Júnior
- Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto University of São Paulo São Paulo Brazil
| | - Selma Siéssere
- Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto University of São Paulo São Paulo Brazil
- National Institute of Science and Technology, Translational Medicine Ribeirão Preto Brazil
| | - Jaime Eduardo Cecilio Hallak
- National Institute of Science and Technology, Translational Medicine Ribeirão Preto Brazil
- Department of Neurosciences and Behavior, Ribeirão Preto Medical School University of São Paulo Ribeirão Preto Brazil
| | - Marcelo Palinkas
- Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto University of São Paulo São Paulo Brazil
- National Institute of Science and Technology, Translational Medicine Ribeirão Preto Brazil
- Faculty of Anhanguera de Ribeirão Preto São Paulo Brazil
| | - Thais Cristina Chaves
- Department of Neurosciences and Behavior, Ribeirão Preto Medical School University of São Paulo Ribeirão Preto Brazil
| | - Simone Cecilio Hallak Regalo
- Department of Basic and Oral Pathology, School of Dentistry of Ribeirão Preto University of São Paulo São Paulo Brazil
- National Institute of Science and Technology, Translational Medicine Ribeirão Preto Brazil
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27
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Ferreira B, Palinkas M, Gonçalves L, da Silva G, Arnoni V, Regalo I, Vasconcelos P, Júnior WM, Hallak J, Regalo S, Siéssere S. Spinocerebellar ataxia: Functional analysis of the stomatognathic system. Med Oral Patol Oral Cir Bucal 2019; 24:e165-e171. [PMID: 30818308 PMCID: PMC6441597 DOI: 10.4317/medoral.22839] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 02/27/2019] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Neurodegenerative diseases that affect the cerebellum, especially in elderly individuals, cause impairment of motor coordination and quality of life. The presente study evaluated the electromyographic activity and thickness of the right and left masseter and temporal muscles, and the maximum molar bite force of individuals with spinocerebellar ataxia. MATERIAL AND METHODS Twenty-eight individuals were divided into two groups: those with (n=14) and without (n=14) spinocerebellar ataxia. Data on the masticatory muscles obtained from the electromyographic activity (resting, right and left laterality and protrusion), muscle thickness (maximal voluntary contraction and tensile strength) and maximum bite force (right and left) were tabulated and descriptive analysis using Student's t-test (P ≤ 0.05). RESULTS In the comparison between groups, greater electromyographic activity was demonstrated for individuals with spinocerebellar ataxia, with a statistically significant difference in protrusion and laterality for the temporal muscles (P = 0.05). There was no statistically significant difference between the groups for masticatory muscles thickness in the conditions evaluated. For maximum molar bite force, the group with spinocerebellar ataxia showed lower bite force (P ≤ 0.05). CONCLUSIONS The data obtained suggest that spinocerebellar ataxia promotes functional reduction in the stomatognathic system, mainly affecting the electromyographic activity and bite force, hindering chewing, with a resultant alteration of nutritional intake and a decrease of quality of life.
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Affiliation(s)
- B Ferreira
- School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café s/n, Bairro Monte Alegre, CEP 14040-904 Ribeirão Preto SP, Brazil,
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28
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Esposto DS, Palinkas M, Gonçalves LMN, Vasconcelos PBD, Ferreira VTK, Guirro ECDO, Siéssere S, Regalo SCH. Effect of Breast Cancer Treatment on the Stomatognathic System. Braz Dent J 2018; 29:368-373. [PMID: 30462763 DOI: 10.1590/0103-6440201801791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 02/15/2018] [Indexed: 11/21/2022] Open
Abstract
Breast cancer is the most common cancer affecting women in the world and provides functional changes in the human body. Evaluate women submitted to unilateral mastectomy, through electromyographic activity (mandibular rest, right and left laterality, protrusion, maximum voluntary contraction with and without Parafilm, habitual and non-habitual mastication) and thickness (rest and maximum voluntary contraction) of the right temporal muscle (RT), left temporal (LT), right masseter (RM) and left masseter (LM), also the molar bite force (right and left) and compare the data with healthy women. Material and Methods: 32 women were divided into two groups: unilateral mastectomy group (MG), average ± standard deviation 56.50±14.50 years (n=16) and without the disease group (CG), average ± standard deviation 56.56±14.15 years (n=16). The normalized electromyographic data, muscle thickness and maximal molar bite force were tabulated and submitted to statistical analysis (SPSS 21.0; student t test, p≤0.05). Significant statistical differences between MG and CG were found in right laterality, for RM (p=0.02); left laterality, for LT (p=0.01); chewing with peanuts, for RM (p=0.04); chewing with raisins, for LM (p=0.04) and right molar bite force (p=0.03). There was no statistically significant difference between MG and CG for muscle thickness. The results of this study suggest that women undergoing unilateral mastectomy may present functional changes, with emphasis on muscular hyperactivity, lower masticatory efficiency and lower maxillary bite force.
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Affiliation(s)
- Danilo Stefani Esposto
- Department of Biomechanics, Medicine and Locomotive Apparatus Rehabilitation, Ribeirão Preto Medical School, USP- Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Marcelo Palinkas
- Department Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Ligia Maria Napolitano Gonçalves
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Paulo Batista de Vasconcelos
- Department Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | | | - Elaine Caldeira de Oliveira Guirro
- Department of Biomechanics, Medicine and Locomotive Apparatus Rehabilitation, Ribeirão Preto Medical School, USP- Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Selma Siéssere
- Department Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Simone Cecilio Hallak Regalo
- Department Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, USP - Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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29
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Padmaja Satheeswarakumar L, Elenjickal TJ, Ram SKM, Thangasamy K. Assessment of Mandibular Surface Area Changes in Bruxers Versus Controls on Panoramic Radiographic Images: A Case Control Study. Open Dent J 2018; 12:753-761. [PMID: 30369985 PMCID: PMC6182875 DOI: 10.2174/1745017901814010753] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 07/08/2018] [Accepted: 09/03/2018] [Indexed: 11/22/2022] Open
Abstract
Background: Bruxism is the commonest of the many parafunctional activities of the masticatory system. Opinions on the causes of bruxism were numerous and widely varying. It can occur during sleep as well as wakefulness. Bruxism was for long considered a major cause of tooth wear. Other effects of bruxism may include tooth movement and tooth mobility, as well as changes in oral soft tissues and jaw bone. Since the exact etiology and manifestations are unclear, it was difficult to diagnose Bruxism. In this study, we evaluated the area change as measured from digital panoramic radiographs that can occur in the lower jaw bone in those with Bruxism and compared the results with non-bruxers. Aims and Objective: To determine the surface area changes of the mandible, condylar and coronoid processes in Bruxers from Panoramic radiographs and to compare and contrast the changes with age and gender matched controls. Materials and Methods: The study was conducted in the department of Oral Medicine and Radiology. The total sample size was 40. The sample was divided into two groups, Bruxers and non-bruxers with 20 subjects in each group. Healthy volunteers aged between 20- 30 years diagnosed with Bruxism and Healthy volunteers aged between 20- 30 years diagnosed without Bruxism were included in group II (Non-Bruxers). Bruxchecker was made use of in confirming the Bruxism in Group I. The Panoramic radiograph was used as the imaging modality for the study. The measurements were made with the help of software, Image J. All the measurements were tabulated and statistical analysis was made using ANOVA (Post hoc) followed by Dunnett’s test and unpaired t test. Results: A comparison of the mandibular surface area as a whole and also condylar and coronoid processes individually were carried out. Significant results were obtained in case of condylar and coronoid processes between the two groups. The surface area of condylar process of Group I was found to be lower than that of Group II. The surface area of the right coronoid process of group I was found to be less when compared to that of group II but the values of the left coronoid process of group I was found to be more when compared with group II. The surface area of the mandible showed no significant difference between the groups. There was significant difference between the genders in case of mandible, condyle and coronoid. The surface area of mandible and condylar process was found to be lower in female when compared to male. The surface area of coronoid process was found to be more in case of females when compared to that of males in Group I. The results of our study show that while the overall surface area of bruxers remain unaffected when compared to controls, the condylar and coronoid process show significant change. The hitherto belief that the primary brunt of bruxism is borne by the masseter would require a revisit since alteration in tonicity of the masseter would reflect in surface area change of the mandible as a whole. An increase in the surface area of the coronoid process in bruxers was observed in our study which could be attributed to altered activity of the temporalis, a muscle largely responsible for the posture of the mandible. This could imply that bruxers show alteration in temporalis activity which would explain several clinical manifestations such as headache, neck pain, shoulder pain and altered posture and so on which we have observed in the clinical practice of neuromuscular dentistry. Further studies examining the activity of the temporalis and masseter would further corroborate our findings and form the basis for future research in this arena. Conclusion: This original research was carried out to assess the surface area changes in mandible and condylar and coronoid processes of Bruxers and non-bruxers. The results showed significant changes in the surface area of condylar and coronoid process in Bruxers when compared to the controls. This is an area of study with paucity of available literature. This study would be a stepping stone for future studies in this arena.
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Affiliation(s)
- Lakshmi Padmaja Satheeswarakumar
- Department of Oral Medicine and Radiology, Sree Mookambika Institute of Dental Sciences, Kulasekharam, Kanya Kumari District, Tamil Nadu, India
| | - Tatu Joy Elenjickal
- Department of Oral Medicine and Radiology, Sree Mookambika Institute of Dental Sciences, Kulasekharam, Kanya Kumari District, Tamil Nadu, India
| | - Shashi Kiran Mohan Ram
- Department of Oral Medicine and Radiology, Sree Mookambika Institute of Dental Sciences, Kulasekharam, Kanya Kumari District, Tamil Nadu, India
| | - Kartheesan Thangasamy
- Department of Oral Medicine and Radiology, Sree Mookambika Institute of Dental Sciences, Kulasekharam, Kanya Kumari District, Tamil Nadu, India
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30
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Garip H, Tufekcioglu S, Kaya E. Changes in the temporomandibular joint disc and temporal and masseter muscles secondary to bruxism in Turkish patients. Saudi Med J 2018; 39:81-85. [PMID: 29332113 PMCID: PMC5885125 DOI: 10.15537/smj.2018.1.20873] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objectives: To analyze the relationships between temporalis and masseter muscle hypertrophy and temporomandibular joint (TMJ) disc displacement in patients with severe bruxism using magnetic resonance imaging (MRI). Methods: This retrospective study included 100 patients with severe bruxism, referred to the Department of Oral and Maxillofacial Surgery, University of Marmara and Istanbul Medipol University, Istanbul, Turkey, between January 2015 and December 2016. Patients underwent TMJ MRI with a 1.5-T system in open and closed mouth positions. The masseter and temporalis muscles were measured in the axial plane when the patient’s mouth was closed. Results: At its thinnest, the disc averaged was 1.11±0.24 mm. At their thickest, the masseter averaged was 13.65±2.19 mm and temporalis muscles was 12.98±2.4 mm. Of the discs, 24% were positioned normally, 74% were positioned anteriorly, and 2% were positioned posteriorly. The temporalis muscle was significantly thicker in patients with normally positioned discs than in those with anteriorly positioned discs (p=0.035). Conclusions: The temporalis muscle was significantly thicker in patients with normally positioned discs than in those with anteriorly positioned discs (p=0.035). Additional studies should be conducted to evaluate the relationships between all masticatory and surrounding muscles and disc movements in patients with bruxism.
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Affiliation(s)
- Hasan Garip
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Marmara University, Istanbul, Turkey. E-mail.
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31
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Gonçalves LMN, Palinkas M, Hallak JEC, Marques Júnior W, Vasconcelos PBD, Frota NPR, Regalo IH, Siéssere S, Regalo SCH. Alterations in the stomatognathic system due to amyotrophic lateral sclerosis. J Appl Oral Sci 2018; 26:e20170408. [PMID: 29898176 PMCID: PMC5963914 DOI: 10.1590/1678-7757-2017-0408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 01/05/2018] [Indexed: 08/30/2023] Open
Abstract
Objectives: To compare the molar bite force, electromyographic activity, chewing efficiency and thickness of the masseter and temporalis muscles in individuals with amyotrophic lateral sclerosis (ALS) and healthy individuals. Material and Methods: Thirty individuals enrolled in the study were divided into the study group (with ALS, n=15) and control group (healthy individuals, n=15). Data regarding molar bite force (right and left), electromyographic activity (mandibular rest, right and left laterality, protrusion, and maximum voluntary contraction), chewing efficiency (habitual and non-habitual), and masticatory muscle thickness (rest and maximum voluntary contraction) were tabulated and subjected to statistical analysis (Student’s t-test, p≤0.05). Results: Comparisons between the groups demonstrated a statistically significant increase in the electromyographic activity of the right masseter (p=0.03) and left masseter (p=0.03) muscles during mandibular rest; left masseter (p=0.00), right temporalis (p=0.00), and left temporalis (p=0.03) muscles during protrusion; and right masseter (p=0.00), left masseter (p=0.00), and left temporalis (p=0.00) muscles during left laterality, in individuals with ALS as compared with healthy individuals. A statistically significant decrease was observed in the habitual chewing efficiency of the right masseter (p=0.00) and right temporalis (p=0.04) muscles in individuals with ALS. No statistically significant difference between the groups was found the masticatory muscle thickness and maximal molar bite force. Conclusions: ALS may lead to modifications in the activities of the stomatognathic system, including muscular hyperactivity and reduction in chewing efficiency; however, no change has been observed in the masticatory muscle thickness and molar bite force.
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Affiliation(s)
- Lígia Maria Napolitano Gonçalves
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Morfologia, Fisiologia e Patologia Básica, Ribeirão Preto, São Paulo, Brasil
| | - Marcelo Palinkas
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Morfologia, Fisiologia e Patologia Básica, Ribeirão Preto, São Paulo, Brasil.,Faculdade Anhanguera de Ribeirão Preto, São Paulo, Brasil
| | - Jaime Eduardo Cecilio Hallak
- Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Neuropsiquiatria e Psicologia Médica, Ribeirão Preto, São Paulo, Brasil
| | - Wilson Marques Júnior
- Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Neuropsiquiatria e Psicologia Médica, Ribeirão Preto, São Paulo, Brasil
| | - Paulo Batista de Vasconcelos
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Morfologia, Fisiologia e Patologia Básica, Ribeirão Preto, São Paulo, Brasil
| | - Nicolly Parente Ribeiro Frota
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Morfologia, Fisiologia e Patologia Básica, Ribeirão Preto, São Paulo, Brasil
| | - Isabela Hallak Regalo
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Morfologia, Fisiologia e Patologia Básica, Ribeirão Preto, São Paulo, Brasil
| | - Selma Siéssere
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Morfologia, Fisiologia e Patologia Básica, Ribeirão Preto, São Paulo, Brasil
| | - Simone Cecilio Hallak Regalo
- Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Morfologia, Fisiologia e Patologia Básica, Ribeirão Preto, São Paulo, Brasil
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32
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Câmara-Souza MB, Figueredo OMC, Rodrigues Garcia RCM. Masticatory function and oral stereognosis in bruxers. Cranio 2018; 37:285-289. [DOI: 10.1080/08869634.2018.1425234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mariana Barbosa Câmara-Souza
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Olívia Maria Costa Figueredo
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
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Regalo SCH, de Lima Lucas B, Díaz-Serrano KV, Frota NPR, Regalo IH, Nassar MSP, Righetti MA, Oliveira LF, Gonçalves LMN, Siéssere S, Palinkas M. Analysis of the stomatognathic system of children according orthodontic treatment needs. J Orofac Orthop 2018; 79:39-47. [PMID: 29330612 DOI: 10.1007/s00056-017-0117-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 11/20/2017] [Indexed: 12/18/2022]
Abstract
PURPOSE The present study evaluated electromyographic activity (EMG), masticatory performance, and tongue strength in children without and with orthodontic treatment needs. PATIENTS AND METHODS A total of 90 children were screened and divided into the following groups: Group I (no treatment needed; mean age: 8.00 ± 0.43 years; n = 26), Group II (few malocclusions, treatment needed; mean age: 8.89 ± 0.43 years; n = 28), and Group III (slight-to-borderline treatment needed; mean age: 8.44 ± 0.22 years; n = 36). Orthodontic treatment need was classified on the basis of IOTN-DHC (Index of Orthodontic Treatment Need - Dental Health Component). The electromyographic Trigno EMG Systems was used for muscle analysis and the Iowa Oral Pressure Instrument (IOPI) was used to measure tongue strength. Data were analyzed using normality tests and one-way analysis of variance with a Bonferroni post hoc test (p ≤ 0.05). RESULTS EMG in almost all mandibular movements was higher in Group III with statistically significant differences compared to position at rest: right masseter (p = 0.03); protrusion: left temporal (p = 0.02); saliva swallowing: left temporal (p = 0.05) and water swallowing: orbicularis oris mouth, right upper segment (p = 0.05). Lower masticatory performance was found in Group III, but the difference compared to Group I and II was not significant. There were no significant differences between the groups in terms of tongue strength. CONCLUSIONS Children with borderline orthodontic treatment needs show functional disorders of the stomatognathic system.
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Affiliation(s)
- Simone Cecílio Hallak Regalo
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil
| | - Bárbara de Lima Lucas
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil
| | - Kranya Victoria Díaz-Serrano
- Department of Pediatric Clinics, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil
| | - Nicolly Parente Ribeiro Frota
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil
| | - Isabela Hallak Regalo
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil
| | - Mariângela Salles Pereira Nassar
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil
| | - Mariah Acioli Righetti
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil
| | - Lígia Franco Oliveira
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil
| | - Lígia Maria Napolitano Gonçalves
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil
| | - Selma Siéssere
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil
| | - Marcelo Palinkas
- Department of Morphology, Physiology and Basic Pathology, School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n-Ribeirão Preto, 14040-904, São Paulo, Brazil.
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da Silva AMBR, Valencise Magri L, da Silva MAMR, Sousa Neto MDD. Are the bite force and electromyographic activity altered in muscle TMD patients with abfraction lesions? Cranio 2017; 37:168-174. [DOI: 10.1080/08869634.2017.1407116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Laís Valencise Magri
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, São Paulo University, Ribeirão Preto, Brazil
| | | | - Manoel Damião de Sousa Neto
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, São Paulo University, Ribeirão Preto, Brazil
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Díaz-Serrano KV, Dias TM, Vasconcelos P, Sousa LG, Siéssere S, Regalo S, Palinkas M. Impact of temporomandibular disorders on the stomatognathic system in children. Med Oral Patol Oral Cir Bucal 2017; 22:e723-e729. [PMID: 29053659 PMCID: PMC5813991 DOI: 10.4317/medoral.22000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 09/12/2017] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND To evaluate the EMG activity and thickness of right masseter (RM), left masseter (LM), right temporal (RT) and left temporal (LT) muscles and bite force in children with temporomandibular disorders (TMD). MATERIAL AND METHODS Forty five children (mean age 8.8 years; 22 boys and 23 girls) were examined on the basis of the RDC/TMD and the Faces Pain Scale-Revised (FPS-R) was used to determine the level of severity of the signs and symptoms of TMD, resulting in four groups: GI - without TMD (n=10); GII - with mild TMD (n=18), GIII: with moderate TMD (n=12) and GIV: with severe TMD (n=5). The data of electromyographic activity, maximum bite force and muscle thickness were tabulated and submitted to statistical analysis (ANOVA, P≤0.05). RESULTS Children with TMD signs and symptoms had lower EMG activity than children of the control group. There was significant difference among the groups for the LT at rest (P=0.01), right (P=0.03) and left (P=0.05) laterality, and for the LM (P=0.01) and LT (P=0.03) muscles in maximum voluntary contraction. There were no statistically significant differences among the groups regarding muscle thickness. The bite force was lower in the TMD groups than children of the control group, with significant statistical difference for the right region (P=0.03). CONCLUSIONS The severity of TMD signs and symptoms affected the EMG activity and the molar bite force in children. However, structural changes in the thickness of masticatory muscles are not perceptible in children with TMD signs and symptoms.
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Affiliation(s)
- K-V Díaz-Serrano
- Avenida do Café, s/n, Ribeirão Preto Dental School, Campus University of São Paulo, 14040-904 Ribeirão Preto, São Paulo, Brazil,
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36
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Association between signs and symptoms of bruxism and presence of tori: a systematic review. Clin Oral Investig 2017; 21:2789-2799. [DOI: 10.1007/s00784-017-2081-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 02/09/2017] [Indexed: 12/27/2022]
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