Long-term results of surgical therapy for masticatory muscle tendon-aponeurosis hyperplasia accompanied by limited mouth opening

Yoda, Tetsuya; Sato, Tsuyoshi; Abe, Takahiro; Sakamoto, Ichiro; Tomaru, Yohei; Omura, Ken; Hatano, Nozomi; Takato, Tsuyoshi; Ishii, Yoshinori

doi:10.1016/j.ijom.2009.07.002

Cited by 40 publications

(39 citation statements)

References 6 publications

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“…MMTAH does not include muscular hypertrophy. Therefore, limited mouth opening is not relieved by muscle relaxants [1]. On the contrary, there is a possibility that jaw opening muscular relaxation by muscle relaxants makes keeping the mouth opening more difficult because muscle relaxants do not affect hyperplastic tendons and aponeuroses of the masticatory muscles, which means that tension in those muscles do not change.…”

Section: Discussionmentioning

confidence: 99%

“…As described by Yoda et al, masticatory muscle tendonaponeurosis hyperplasia (MMTAH) is a new disease entity characterized by limited mouth opening due to contracture of the masticatory muscles as a result of tendon hyperplasia and aponeuroses [1]. The other clinical feature is that the face of the patient with this disease displays a square mandible configuration [1].…”

Section: Introductionmentioning

confidence: 99%

“…The other clinical feature is that the face of the patient with this disease displays a square mandible configuration [1]. MMTAH is a possible cause of difficult intubation because of the limited mouth-opening ability.…”

Section: Introductionmentioning

confidence: 99%

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Possible difficult laryngoscopy caused by masticatory muscle tendon-aponeurosis hyperplasia: we anesthesiologists should be aware of this disease

et al. 2010

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Masticatory muscle tendon-aponeurosis hyperplasia (MMTAH) is a new disease entity characterized by limited mouth opening due to contracture of the masticatory muscles resulting from hyperplasia of tendons and aponeuroses. The other clinical feature is that the face of the patient with this disease displays a square mandible configuration. Muscle relaxants provide no relief for the limited mouth-opening ability. Anesthesiologists need to suspect difficult airway when patients have limited mouth opening with square mandible configuration. MMTAH can therefore be a possible cause of difficult intubation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Possible difficult laryngoscopy caused by masticatory muscle tendon-aponeurosis hyperplasia: we anesthesiologists should be aware of this disease

et al. 2010

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“…A variety of factors contribute to TMD, including parafunction (bruxism and teeth clenching), trauma, mental disorders, poor health and nutrition, and hormonal factors (6)(7)(8)(9)(10)(11)26). It is likely that various risk factors for TMD overlap, making the etiology complicated.…”

Section: Prevalence and Etiology Of Tmd In Individuals Using A Vdt Atmentioning

confidence: 99%

“…Formerly, TMD was thought to occur as a result of malocclusion (5). However, though more recently several different influences, including parafunction (bruxism and teeth clenching), and traumatic, anatomical, psychological, hormonal (i.e., estrogen), and hereditary factors have been reported to be involved in its development (6)(7)(8)(9)(10)(11). Among the risk factors for TMD, psychological aspects are thought to be important for understanding its etiology.…”

Section: Introductionmentioning

confidence: 99%

Association of temporomandibular disorder with occupational visual display terminal use

Shigeishi

2016

Biomedical Reports

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Abstract. Increased visual display terminal (VDT) use has raised the prevalence of VDT-related adverse conditions, such as dry eye disease, and musculoskeletal and psychopathological symptoms, in office workers, including temporomandibular disorder (TMD). Many factors contributing to TMD have been identified, such as parafunctional habit (bruxism and teeth clenching), trauma, mental disorders, lifestyle, poor health, and nutrition, as well as hormonal factors (i.e., estrogen). It is likely that various contributing factors overlap in TMD development in individuals who routinely use a VDT for work. However, the relationship between TMD and VDT use has not been fully elucidated. In this mini-review, findings of recent studies of TMD in relation to occupational VDT use in Japan are discussed, as well as characteristic features and prevention strategies. Contents1. Introduction 2. VDT use-related disease 3. Prevalence of TMD in general population 4. Prevalence and etiology of TMD in individuals using a VDT at work 5. Prevention of TMD in occupational VDT users 6. Conclusion IntroductionVisual display terminals (VDTs) are used for a wide variety of work tasks, such as programming, data input, monitoring, and image construction. Increased VDT use has raised the prevalence of VDT-related disease, such as dry eye disease, and musculoskeletal and psychopathological symptoms, in office workers (1-3), with temporomandibular disorder (TMD) also reported as a VDT-related disease occurring in women who work at home as well as in a workplace environment (4).TMD is a result of problems with the jaw, temporomandibular joint (TMJ), and surrounding facial muscles (5), while common signs and symptoms include restricted mouth opening, TMJ sounds, and muscle/TMJ pain. Such pain often leads to restricted jaw movements, resulting in difficulties with eating and speaking. Formerly, TMD was thought to occur as a result of malocclusion (5). However, though more recently several different influences, including parafunction (bruxism and teeth clenching), and traumatic, anatomical, psychological, hormonal (i.e., estrogen), and hereditary factors have been reported to be involved in its development (6-11). Among the risk factors for TMD, psychological aspects are thought to be important for understanding its etiology. It is considered that psychological conditions such as depression, anxiety, and stress may lead to the TMJ and masticatory muscles via sympathetic nerve activation, resulting in an increased risk of TMD onset and progression (4). Thus, it is expected that individuals with TMD-related symptoms are likely to be found in occupational fields. However, the relationship between TMD and occupational VDT use has not been fully elucidated. This review introduces recent studies of TMD in occupational settings in Japan to highlight its characteristics in association with VDT use. VDT use-related diseaseIndividuals who use a VDT in an office environment typically sit in the same position for a long period of time, have repetitive and persis...

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A case of masticatory muscle tendon–aponeurosis hyperplasia revealed after orthognathic surgery

Nakao,

Ohba,

Shido

et al. 2024

Oral Science International

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BackgroundMasticatory muscle tendon–aponeurosis hyperplasia (MMTAH) is a condition in which the tendons and fascia of the masticatory muscles, including the masseter muscle, overgrow.Case presentationA 36‐year‐old male underwent orthognathic surgery to correct malocclusion with mandibular protrusion. A strong skeletal relapse was observed immediately after surgery. The patient was clinically diagnosed with MMTAH after examination. He opened his mouth up to 46 mm after coronoidectomy and masseter muscle tendonectomy surgery.ConclusionBased on the available previous reports, this is the first report of MMTAH resulting from strong skeletal relapse after orthognathic surgery.

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Long-term results of surgical therapy for masticatory muscle tendon-aponeurosis hyperplasia accompanied by limited mouth opening

Cited by 40 publications

References 6 publications

Possible difficult laryngoscopy caused by masticatory muscle tendon-aponeurosis hyperplasia: we anesthesiologists should be aware of this disease

Possible difficult laryngoscopy caused by masticatory muscle tendon-aponeurosis hyperplasia: we anesthesiologists should be aware of this disease

Association of temporomandibular disorder with occupational visual display terminal use

A case of masticatory muscle tendon–aponeurosis hyperplasia revealed after orthognathic surgery

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