• Title, Summary, Keyword: Temporomandibular disorders

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A Feature of Maintaining the Maximum Bite Force on Central Incisors in Adult Females with Signs and Symptoms of Temporomandibular Disorders (측두하악장애를 가진 성인여성에 있어 중절치부 최대교합력 유지양상)

  • Kim, Chung Min;Shin, Geum Baek
    • Journal of Oral Medicine and Pain
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    • v.12 no.1
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    • pp.47-52
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    • 1987
  • In order to evaluate the effect of signs and symptoms of temporomandibular disorders on the bite force of anterior teeth, the author estimated a feature of maintaining the maximum bite force on central incisors in Korean 34 adult females with signs and symptoms of temporomandibular disorders (TMD group) and in Korean 31 adult females within normal masticatory function far from any sign or symptom of TMD (control group), and analyzed the data statistically. The obtained results were as follows: 1. There was not a significant difference of the maximum bite force on central incisors between TMD group and control group (P>0.05). 2. The duration of maintaining the maximum bite force on central incisors in TMD group was shorter than it in control group (P<0.01).

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Sleep-related Breathing Disorder and Its Relationship with Temporomandibular Disorders: Literature Review

  • Park, Jeongryul;Lee, Seunghoon;Lee, Sanghoon;Choi, Doyoung
    • Journal of TMJ Balancing Medicine
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    • v.7 no.1
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    • pp.1-10
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    • 2017
  • In order to establish a relationship between sleep related breathing disorder (SBD) and temporomandibular disorders (TMDs), a literature review was performed. A researching was performed based on PubMed, including english languages. Any clinical study identified relationship between SBD and TMD were selected in this review. 13 studies were analyzed in this review. According to SBD diagnosis, articles were grouped as follows: polysomnographic diagnosis (n=7), clinical diagnosis (n=2) and survey/self-report (n=4). 12 articles established a positive relation between SBD and TMD and 1 did not. SBD would be associated with protrusion/retrusion degree, myofascial pain, muscular and joint pathology, and other orofacial findings. It was analyzed that the retrusion of the mandible had the significant influence on the severity of the SBD.

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Conservative treatment modalities for patients with temporomandibular joint(TMJ) disorders (임상가를 위한 특집 1 - 턱관절장애의 보존적 치료)

  • Kim, Cheul
    • The journal of the Korean dental association
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    • v.51 no.2
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    • pp.74-83
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    • 2013
  • In the management of temporomandibular joint(TMJ) disorders, dental practioner should conduct the reversible, conservative, and inexpensive treatment modalities prior to the irreversible and invasive treatment. That is to say, behavioral, pharmacologic, and physical therapy should be conducted firstly, and then the occlusal appliance therapy could be considered. If patients do not react to these conservative treatments, we have to consider surgical treatments. If the accurate diagnosis is confirmed by intimate history taking, clinical and imaging examinations, we can rehabilitate the normal TMJ function and relieve the clinical symptoms with only conservative treatments in most TMJ disorder cases.

Subjective symptoms for temporomandibular disorder and related factors (턱관절 장애 자각증상 및 관련요인)

  • Kim, Soo-Kyung;Kim, Yeon-Ju;Nam, Jung-Min;Park, Jeong-Sun;Sim, Mi-Yeon;Yun, Se-Jin;Jung, Eun-Seo
    • Journal of Korean society of Dental Hygiene
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    • v.17 no.4
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    • pp.589-600
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    • 2017
  • Objectives: This study aims to prove that stress directly or indirectly affects the jaw joint disorders and provide basic data for developing oral health promotion program. Methods: The study was conducted by distributing a questionnaire survey to more than 350 people from December 30, 2016 to January 7, 2017. Among them, 336 copies were collected and 314 copies were utilized eventually, except Section 314, for the final analysis. Regression analysis was performed to investigate the factors affecting temporomandibular joint disorders. Results: As a result, academic achievement and stress were found to affect the temporomandibular joint disorders. The higher the level of education and stress, the higher the subjective symptoms of jaw joint disorder. Conclusions: Because stress affects temporomandibular joint disorders, it is necessary to find out the cause of stress not only for professional treatment but also for solution of temporomandibular disorder. Thus, stress level must be conisdred as influential factors in developing a jaw joint disease prevention program.

Evaluation of condylar positions in patients with temporomandibular disorders: A cone-beam computed tomographic study

  • Imanimoghaddam, Mahrokh;Madani, Azam Sadat;Mahdavi, Pirooze;Bagherpour, Ali;Darijani, Mansoreh;Ebrahimnejad, Hamed
    • Imaging Science in Dentistry
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    • v.46 no.2
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    • pp.127-131
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    • 2016
  • Purpose: This study was performed to compare the condylar position in patients with temporomandibular joint disorders (TMDs) and a normal group by using cone-beam computed tomography (CBCT). Materials and Methods: In the TMD group, 25 patients (5 men and 20 women) were randomly selected among the ones suffering from TMD according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). The control group consisted of 25 patients (8 men and 17 women) with normal temporomandibular joints (TMJs) who were referred to the radiology department in order to undergo CBCT scanning for implant treatment in the posterior maxilla. Linear measurements from the superior, anterior, and posterior joint spaces between the condyle and glenoid fossa were made through defined landmarks in the sagittal view. The inclination of articular eminence was also determined. Results: The mean anterior joint space was 2.3 mm in the normal group and 2.8 mm in the TMD group, respectively. The results showed that there was a significant correlation between the superior and posterior joint spaces in both the normal and TMD groups, but it was only in the TMD group that the correlation coefficient among the dimensions of anterior and superior spaces was significant. There was a significant correlation between the inclination of articular eminence and the size of the superior and posterior spaces in the normal group. Conclusion: The average dimension of the anterior joint space was different between the two groups. CBCT could be considered a useful diagnostic imaging modality for TMD patients.

Masticator Space Tumor Mimicking Temporomandibular Disorder Presenting Facial Swelling and Trismus: A Case Report

  • Jeong, Koo-Hyun;Park, Jo-Eun;Kim, Mee-Eun;Kim, Hye-Kyoung
    • Journal of Oral Medicine and Pain
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    • v.44 no.2
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    • pp.65-68
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    • 2019
  • Temporomandibular disorders (TMD), involving the masticator system of temporomandibular joint (TMJ) and masticator muscle, can be characterized with the cardinal signs and symptoms of jaw pain, noises and limitation of mandibular range of motion. However, TMD requires differential diagnosis due to its heterogeneous characteristics with various causes despite the similar clinical profiles. Oral cancer involving TMJ and the masticator system, although infrequent, can be one of these causes and should be considered one of the most life-threatening disease mimicking TMDs. This report introduces a case of masticator space tumor originally diagnosed as TMD in a 73-year-old Korean female with previous history of brain tumor. The clinical signs and symptoms closely mimic that of TMD which may have disrupted differential diagnosis. We discuss here key points for suspecting TMDs of secondary origin, namely, that of cancer and the implications it has on dental clinicians.

Comparison of temporomandibular disorders between menopausal and non-menopausal women

  • Farzin, Mitra;Taghva, Masumeh;Babooie, Moslem
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.44 no.5
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    • pp.232-236
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    • 2018
  • Objectives: Hormonal changes during menopause alter a woman's susceptibility to some disorders. Information regarding the prevalence of temporomandibular disorder (TMD) in menopausal women is limited in the literature. In this study, the prevalence and severity of TMDs were compared between menopausal and non-menopausal women. Materials and Methods: The study included 140 women (69 premenopausal and 71 postmenopausal) 45 to 55 years of age that were examined in Shiraz Dental School, Shiraz in Iran. The Helkimo clinical dysfunction index (Di) was used to evaluate temporomandibular joint (TMJ) dysfunction. The data were analyzed using chi-square and Fisher's exact tests. Results: Occurrence of TMD was significantly higher in menopausal than non-menopausal women (P<0.001). All the TMD criteria based on Helkimo Di except range of mandibular movement were significantly more common in menopausal women. The range of mandibular movement was not significantly different between menopausal and non-menopausal women (P=0.178). Conclusion: The results from this study show that TMD can be considered more common and severe in menopausal than non-menopausal women. This finding indicates that, similar to other conditions in menopausal women such as arthritis and osteoporosis, TMD should be taken into consideration by dental and medical professionals.

Manual Therapy in the Treatment of Temporomandibular Disorders: A Protocol for a Systematic Review (측두하악 장애 치료를 위한 수기치료에 대한 체계적 고찰의 프로토콜)

  • Kim, Hyungsuk;Jung, Jae-Young;Chung, Seok-Hee
    • Journal of Korean Medicine Rehabilitation
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    • v.25 no.4
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    • pp.41-46
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    • 2015
  • Objectives This systematic review will analyse randomised controlled trials (RCTs) of manual therapy in patients with temporomandibular disorders (TMDs) to evaluate the efficacy of this approach. Methods RCTs will be identified in the following ten databases based on searches starting with their inception: MEDLINE, EMBASE, CENTRAL, four Korean databases as KoreaMed, DBPIA, NDSL, and RISS and three Chinese databases as CNKI, VIP and Wanfang. The quality of these studies will be analysed using the Cochrane risk of bias. A meta-analysis will be conducted, and subgroup analysis will be considered if comparatively large heterogeneity is detected. Conclusions We plan to publish this systematic review in a peer-reviewed journal. Findings from this review may contribute to the treatment process in clinical situations. Trial registration number: PROSPERO 2015: CRD42015024090

Occlusal Analysis in the Policemen with Temporomandibular Disorders Using T-scan II System (경찰 종사자의 측두하악장애환자에서 T-scan II System을 이용한 교합분석)

  • Lim, Hyun-Dae;Jung, Seung-Ah;Lee, You-Mee
    • Journal of Oral Medicine and Pain
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    • v.31 no.4
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    • pp.365-373
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    • 2006
  • This study suggested correction of excessive mouth opening or maximum occlusal contact to analyse occlusal contact time, occlusal contact number and force through evaluation of occlusal pattern in policemen with temporomandibular disorders. The community of policemen influence on temporomandibular disorder's development and progress due to other condition of mouth opening and maximal occlusal contact. Repeated training or changes of usual life style may cause imbalance of stomatognathic system including the masticatory muscle, then develop or aggravate pain of temporomandibular joints and associated structures. This study uses T-scan II system(Tekscan Co., USA) for evaluation on occlusal pattern may influence temporomandibular disorders, and then the subjects take a sensor at 20 mm opening for maximal occlusal contact force. The policemen with temporomandibualr disorders get more long time on maximum contact timing, more short on end contact timing, and more force on end contact force than general society's. So they get closure of mouth with more short time and more force, then transfer remaining load to temporomandibular joint. There are no statistically significances between affected side and occlusal pattern of occlusal contact time and force. There are Left -right dental arch imbalances seems on Rt. dental arch if affected side is right and Lt. dental arch if affected side is left. In above results, It's worth due consideration that policemen with temporomandibular disorders get more smooth mandibualr movement and less force on maximal occlusal contact position.

Effectiveness of Temporomandibular Joint Disorder Follow-Up Using Bone Scans

  • Ku, Jeong-Kui;Kim, Young-Kyun;Yun, Pil-Young
    • Journal of Korean Dental Science
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    • v.8 no.1
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    • pp.1-9
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    • 2015
  • Purpose: To evaluate the effectiveness of temporomandibular joint (TMJ) disorder follow-up and determine the factors that affect the TMJ bone scan hot spot numerical value (bone scan value), and to compare this value to the diagnosis of patients with temporomandibular joint disorders (TMD), their treatment options, and the resolution of their symptoms. Materials and Methods: A retrospective cohort study was performed on 24 patients (four males, 20 females) who received TMD treatment in the Section of Dentistry, Seoul National University Bundang Hospital (Seongnam, Korea) from 2007 to 2014. An analysis of the significance test and correlation between TMD diagnosis, treatment options, a baseline the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) questionnaire, treatment before and after the clinical examination and subjective progress, and TMJ bone scan value change were completed by using SPSS version 12.0. Result: Although only 14 patients had bony factors that caused TMD, the average pre-treatment bone scan value of the all patients was $4.29{\pm}0.31$, which is higher than the finding for osteoarthritis (3.88), and reduced post-treatment bone scan value was found to be without a statistically significant difference (P=0.056). After the treatments, clinical symptoms in 18 patients disappeared, and six patients did not require additional treatment, although they still displayed subjective symptoms. It was observed that the higher the pre-treatment bone scan value, nonspecific physical symptoms, chronic pain index, characteristic pain intensity, disability score, were, the lower the post-treatment bone scan value was. And this reduced post-treatment bone scan value tendency was not shown with the pre-treatment depression index, but there was not a statistical difference. Conclusion: The post-treatment TMJ bone scan value tended to be insignificantly reduced in the 24 patients whose clinical symptoms were improved (P=0.056). Moreover, the TMJ bone scan value showed no relation to the TMD type or its related symptoms.