scholarly journals Masseter Muscle Activity in Orthodontically Treated Patients with a History of Temporomandibular Joint Disorder: An Electromyographic Study

2021 ◽  
Vol 16 (2) ◽  
pp. 191-198
Author(s):  
Nisallina Apridini ◽  
Nia Ayu Ismaniati Noerhadi ◽  
Erwin Siregar
Keyword(s):  
Temporomandibular Joint ◽  
Muscle Activity ◽  
Masseter Muscle ◽  
Maximum Voluntary Contraction ◽  
Control Group ◽  
Temporomandibular Joint Disorder ◽  
Joint Disorder ◽  
History Of ◽  
Masseter Muscles ◽  
Semg Activity

The present study aimed to evaluate the surface electromyography (sEMG) activity of the masseter muscles in patients with a history of temporomandibular joint disorder (TMJD) who received orthodontic treatment. In total, 22 participants aged 18–35 years old were included in this study. They were divided into the control group (patients without a history of TMJD [n = 11]) and the test group (those with a history of TMJD [n = 11]). Each participant underwent sEMG of the right and left masseter muscles at 5-s maximum voluntary contraction (MVC). Results showed that the TMJD group had a lower sEMG activity of masseter muscles at MVC than the non-TMJD group. However, the differences were not statistically significant (p > 0.05, t-test). The Spearman’s correlation coefficient test revealed a weak negative correlation between muscle activity on sEMG and history of TMJD (p > 0.05). In conclusion, orthodontically treated patients in TMJD group have reduced masseter muscle activity during MVC, compare to the non-TMJD group.

scholarly journals Functional Changes of Temporomandibular Joint Mechanoreceptors Induced by Reduced Masseter Muscle Activity in Growing Rats

2009 ◽  
Vol 79 (5) ◽  
pp. 978-983 ◽  
Author(s):  
Takayoshi Ishida ◽  
Tadachika Yabushita ◽  
Kunimichi Soma
Keyword(s):  
Temporomandibular Joint ◽  
Muscle Activity ◽  
Masseter Muscle ◽  
Growth Period ◽  
Control Group ◽  
Functional Changes ◽  
Male Wistar Rats ◽  
Masseter Muscles ◽  
Experimental Group ◽  
Indirect Stimulation

Abstract Objective: To determine the influence of masseter muscle activity during growth on the functional characteristics of temporomandibular joint (TMJ) mechanoreceptors. Materials and Methods: Sixty-six 3-week-old male Wistar rats were divided into an experimental group, in which the masseter muscles were bilaterally resected at 3 weeks of age, and a control group. Single-unit activities of the TMJ mechanoreceptors were evoked by indirect stimulation of passive jaw movement. Electrophysiologic recordings of TMJ units were made at 5, 7, and 9 weeks of age. Results: During this period, the firing threshold of the TMJ units was significantly lower and the maximum instantaneous frequency of the TMJ units was significantly higher in the experimental group than in the control group. Conclusion: Reduced masseter activity during the growth period alters the response properties of TMJ mechanoreceptors.

scholarly journals Comparison of Two Different Treatment Methods to Treat the Temporomandibular Joint Disorders (Myofascial Pain) in a Short Period of Time - A Retrospective Study

2021 ◽  
Vol 10 (38) ◽  
pp. 3342-3345
Author(s):  
Hamad Nasser Albageah ◽  
Abdulaziz Abdulhakim Alwakeel
Keyword(s):  
Retrospective Study ◽  
Temporomandibular Joint ◽  
Masseter Muscle ◽  
Orofacial Pain ◽  
Myofascial Pain ◽  
Temporomandibular Joint Disorder ◽  
Short Period ◽  
Significant Difference ◽  
Joint Disorder ◽  
Pain Patients

BACKGROUND Temporomandibular joint(TMJ)is the third most common site of pain in the orofacial area, while the masseter muscle was the primary painful masticatory muscle. The temporal and frontal region were pain areas indicated by temporomandibular joint disorder (TMDs) patients. The purpose of this study was to compare two different treatment modalities, physical therapy and occlusal appliance to treat myofascial pain. METHODS This retrospective study comprises of all orofacial pain patients attending orofacial pain clinics of Dental University Hospital, King Saud University in Riyadh, Saudi Arabia. Patients were categorized into two groups, the first group: patients treated by the occlusal appliance (hard type). The second group: patients treated by physiotherapy home exercises, including posture position modification. Physical therapy included muscle stretching and isometric tension against resistance exercises and guided jaw movements. Methods of clinical examination was based on the research diagnostic criteria for temporomandibular disorders (RDC/TMD) criteria. The data of pain level was collected based on the visual analog scale (VAS). RESULTS 16.1 % of patients were male, and 83.9 % of the patients were female. With the mean age being 31.1 years old. 92.9 % were Saudi patients and 7.1 % were non-Saudi. 50 % of the patients were using an occlusal appliance, and 50 % went for physiotherapy. The independent t-test showed a highly significant difference between different management methods with a P – value of 0.038 and a mean difference of 0.32143. 80.5 % of the patients reported masseter muscle pain as one of their main complaints. CONCLUSIONS A significant difference was observed between physiotherapy and occlusal appliances with education in treating patients with myofascial pain. Patients using the occlusal appliances showed a high percentage of pain reduction (85.7 %) compared to physiotherapy treatment (57.1 %) in a short period of time. Henceforth, patient’s education plays a significant role in pain reduction. KEY WORDS Temporomandibular Joint Disorder, Occlusal Appliance, Myofascial Pain, Physiotherapy

scholarly journals Congenitally Missing Maxillary Lateral Incisors: Functional and Periodontal Aspects in Patients Treated with Implants or Space Closure and Tooth Re-Contouring

2012 ◽  
Vol 6 (1) ◽  
pp. 248-254 ◽  
Author(s):  
Luciana Manzotti De Marchi ◽  
Núbia Inocencya Pavesi Pini ◽  
Roberto Massayuki Hayacibara ◽  
Rafael Santos Silva ◽  
Renata Corrêa Pascotto
Keyword(s):  
Temporomandibular Joint ◽  
Signs And Symptoms ◽  
Gingival Recession ◽  
Control Group ◽  
Temporomandibular Joint Disorder ◽  
Pocket Depth ◽  
Exact Test ◽  
Space Closure ◽  
Joint Disorder ◽  
Congenitally Missing

To evaluate functional and periodontal aspects in patients with unilateral or bilateral congenitally missing maxillary lateral incisors, treated with either implants or space closure and tooth re-contouring. The sample consisted of 68 volunteers, divided into 3 groups: SCR - space closure and tooth re-contouring with composite resin (n = 26); SOI – implants placed in the area of agenesis (n = 20); and CG - control group (n = 22). A modified Helkimo questionnaire and the Research Diagnostic Criteria for Temporomandibular Disorders were used by a single, previously calibrated evaluator to assess signs and symptoms of temporomandibular joint disorder. The periodontal assessment involved the following aspects: plaque index, bleeding upon probing, pocket depth greater than 3 mm, gingival recession, abfraction, periodontal biotype and papilla index. The data were analyzed using Fisher's exact test and the nonparametric Mann-Whitney and Kruskal-Wallis tests (α=.05). No differences in periodontal status were found between treatments. None of the groups were associated with signs and symptoms of temporomandibular joint disorder. Both treatment alternatives for patients with congenitally missing maxillary lateral incisors were satisfactory and achieved functional and periodontal results similar to those of the control group.

scholarly journals Evaluation of occlusal factors in patients with temporomandibular joint disorder

2012 ◽  
Vol 17 (6) ◽  
pp. 61-68 ◽  
Author(s):  
Max Dória Costa ◽  
Gontran da Rocha Torres Froes Junior ◽  
Carlos Neanes Santos
Keyword(s):  
Temporomandibular Joint ◽  
Temporomandibular Disorder ◽  
Open Bite ◽  
Control Group ◽  
Temporomandibular Joint Disorder ◽  
Posterior Teeth ◽  
Posterior Crossbite ◽  
Asymptomatic Volunteers ◽  
Anterior Guidance ◽  
Joint Disorder

OBJECTIVE: The aim of this study was to determine the prevalence and the relation between the main occlusal factors and the temporomandibular disorder (TMD). METHODS: We analyzed 100 patients (50 diagnosed with TMD and 50 asymptomatic volunteers, control group) through a questionnaire that classified TMD as absent, mild, moderate and severe. Then, an evaluation was made of intraoral occlusal factors: Absence of posterior teeth, wear facets, overjet, overbite, open bite, posterior crossbite, sagittal relationship (Class I, II and III), centric relation discrepancy for maximum intercuspation, anterior guidance and balancing occlusal interference. The c² examined the association between TMD and considered occlusal variables. RESULTS: The prevalence of studied occlusal factors was higher in patients with moderate and severe TMD. Statistically significant results were found on: Absence of five or more posterior teeth, overbite and overjet greater than 5 mm, edge-to-edge bite, posterior crossbite, Class II and III, the absence of effective anterior guide and balancing side interferences. CONCLUSIONS: Indeed, it is concluded that there is a relationship between TMD and occlusal factors, however it can not be told to what extent these factors are predisposing, precipitating or perpetuating the disease. Therefore, despite its multifactorial etiology, one can not neglect the occlusal analysis of these patients.

Effect of Cervical Extensor Strengthening on severity of Temporomandibular Joint Disorder among University students: A Randomized controlled trial

2021 ◽  
pp. 2233-2242
Author(s):  
Ilayaraja Alagia Thiruvevenkadam ◽  
Lee Tze Ling
Keyword(s):  
Temporomandibular Joint ◽  
Controlled Trial ◽  
Mouth Opening ◽  
Control Group ◽  
Temporomandibular Joint Disorder ◽  
Significant Difference ◽  
Post Test ◽  
Joint Disorder ◽  
Maximal Mouth Opening ◽  
Experimental Group

Background and Objectives: Awareness of temporomandibular joint disorder (TMD) is fairly concerning in management of physiotherapy as patients often seek for treatment from orthodontics when pain become their main concerns. In this case, cervical aspects are often overlooked in the treatment of temporomandibular joint disorder. This study aims to determine the effect of cervical extensor strengthening on severity of temporomandibular joint disorder. Methods: A randomized controlled trial study was carried out for 4 weeks to determine the effect of cervical extensor strengthening on severity of temporomandibular joint disorder among university students. A total of 40 participants were recruited via convenient sampling method. Subjects were randomly assigned into two groups: experimental group (E) and control group (C) through lottery randomization. Subjects in experimental group were instructed to perform 1 set of cervical extensor strengthening with 10 repetitions and goldfish exercises whereas subjects in control group were asked to perform goldfish exercises only. A pre-test and post-test severity of TMD, maximal mouth opening and maximal isometric cervical extensor strength were measured for both groups. Results: After 4 weeks of training, there was significant difference in pre-test and post-test severity of TMD and maximal mouth opening for both E and C group. On the other hand, there was significant difference of pre and post-test of maximal isometric cervical extensor strength in experimental group. There was no significant difference in post-test for severity of TMD (p=0.67), maximal mouth opening (p=0.21) and maximal isometric cervical extensor strength (p=0.40) between two groups. Conclusions: The study concluded that, 4 weeks of anti-gravity cervical extensor strengthening exercises protocol showed there was no significantly difference of the severity of TMD and maximal mouth opening between both control and experimental group. On the other hand, goldfish exercises showed significant improvement of maximal mouth opening and reduction in severity of TMD after 4 weeks of intervention period.

scholarly journals Otological manifestation of temporomandibular joint disorder in Ekiti, a sub-Saharan African country

2021 ◽  
Vol 49 (2) ◽  
pp. 030006052199651
Author(s):  
Waheed Atilade Adegbiji ◽  
Gabriel Toye Olajide ◽  
Anthony Tosin Agbesanwa ◽  
Omotola Oluwaseyi Banjo
Keyword(s):  
Temporomandibular Joint ◽  
Clinical Features ◽  
Temporomandibular Joint Disorder ◽  
Prehospital Treatment ◽  
Muscle Disorders ◽  
Joint Disorder ◽  
Study Population ◽  
Male Patients ◽  
Sub Saharan ◽  
Nose And Throat

Objective To determine the prevalence, sociodemographic features, and clinical presentation of temporomandibular joint disorder in otorhinolaryngological practice. Methods This prospective hospital-based study involved patients diagnosed with temporomandibular joint disorder in our institution’s ear, nose, and throat department. Data for this study were obtained from the patients using pretested interviewer-assisted questionnaires. Results The prevalence of temporomandibular joint disorder in this study was 1.3%. The study population included 17 (26.2%) male patients with a male:female ratio of 1.0:2.8. Joint disorder accounted for 75.4% of all disorders, while both mastication muscle and joint disorder accounted for 21.5%. A majority of the patients (47.7%) presented between weeks 1 and 13 of the illness. Unilateral temporomandibular joint disorder accounted for 98.5% of all disorders. The main otologic clinical features were earache and a dull tympanic membrane in 100% and 35.4% of patients, respectively. Middle ear assessment revealed type A in 73.8% of patients and type B in 20.0% according to Jerger’s classification system of tympanometry. Most patients (81.5%) were referred by their family physician. All patients had undergone prehospital treatment prior to presentation. Conclusion Temporomandibular joint disorder is a common presentation in medical practice. Common clinical features include ear, joint, and mastication muscle disorders.

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