Myositis ossificans: Medial pterygoid muscle— A case report

Narang, Ramesh; Dixon, Russell A.

doi:10.1016/0007-117x(74)90130-9

Cited by 34 publications

(12 citation statements)

References 2 publications

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“…There have been only five other reported cases of unilateral medial pterygoid MOT, similar to the present case. In three cases removal of the third molar was the probable aetiological factor 5,9,10 . In the fourth case, wearing a cervical collar to immobilize the neck post laminoplasty was the possible The only treatment modality accepted universally is complete excision of the ossified mass after maturation.…”

Section: Discussionmentioning

confidence: 97%

Myositis ossificans traumatica of the medial pterygoid

Thangavelu¹,

Vaidhyanathan²,

Narendar³

2011

International Journal of Oral and Maxillofacial Surgery

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Section: Discussionmentioning

confidence: 97%

Myositis ossificans traumatica of the medial pterygoid

Thangavelu¹,

Vaidhyanathan²,

Narendar³

2011

International Journal of Oral and Maxillofacial Surgery

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“…Myositis ossificans traumatica (MOT) is a rare and unusual disorder which effectively causes extra‐articular temporomandibular joint ankylosis when it affects the muscles of mastication. Within the literature, 30 cases of MOT of the muscles of mastication have been reported 1,3–30 . A summary of these 30 cases is presented in Table 1.…”

Section: Discussionmentioning

confidence: 99%

“…These events would usually be preceded by an episode of acute or chronic trauma 29 . A possible explanation of MOT occurrence within the masseter muscle is that, anatomically, this muscle is most likely to receive the full impact of any direct trauma, for example, as a result of inter‐personal violence 1,3–30 . Akoi et al.…”

Section: Discussionmentioning

confidence: 99%

“…It usually affects a single/local muscle following either acute or chronic trauma/inflammation and its incidence within the maxillofacial region is extremely low. To our knowledge, there have only been 30 cases reported in the literature of MOT of the muscles of mastication between 1924 and 2002 1,3–30 . The following case describes a 15 year follow‐up of a patient who developed MOT of the temporalis and pterygoid muscles following surgical removal of a lower wisdom tooth.…”

Section: Introductionmentioning

confidence: 99%

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Complication following lower third molar surgery: myositis ossificans traumatica of the muscles of mastication

Seehra

Lloyd

2009

Oral Surgery

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Trismus is a frequent post-op sequelae of third molar surgery. A history of long-standing post-operative trismus warrants further investigation. Myositis ossificans traumatica (MOT), as its name implies, is ossification and bone formation within muscle following an episode of trauma. When it affects the muscles of mastication, it causes severe trismus. This rare disorder and its limited treatment options can potentially have debilitating effects to the patient's normal oral functioning and health. The following is a case report of a patient who developed MOT of the muscles of mastication following surgical exodontia of a lower wisdom tooth, the progress over a 15 year period and a review of the literature. This case demonstrates the longterm difficulties in managing MOT of the muscles of mastication.

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“…Além de ser alvo de desordens funcionais, este músculo é frequentemente susceptível ao trauma iatrogênico durante o bloqueio anestésico do nervo alveolar inferior (WRIGHT, 2011). Outros processos patológicos associados ao trauma também têm sido reportados no músculo pterigóideo medial (NARANG;DIXON, 1974;THANGAVELU et al, 2011), mas a pouca atenção que os cirurgiões dentistas prestam ao diagnóstico por manipulação funcional, contribuem ao desenvolvimento e perpetuação de sindromes dolorosas nos pacientes.…”

Section: Músculo Pterigóideo Medialunclassified

Efeitos do estresse sistêmico no músculo pterigóideo medial de ratos com e sem alteração oclusal

Fernández¹

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Emotional stress is a phenomenon of high incidence at globalized society that has been linked as a possible etiologic factor for many diseases. The effect of adrenergic activity in increased tone of skeletal muscles during episodes of chronic stress suggests the occurrence of others structurals and functionals alterations in the stomatognathic system, but the mechanism by which emotional factors can cause muscle dysfunction is not well understood. The malocclusion by tooth loss also promotes muscle changes that associated with the effects of stress can have a big impact on the etiology and development of orofacial pain and dysfunction. Stress and masticatory hypofunction are factors related to the appearance of temporomandibular disorders (TMD) and have not been evaluated in the medial pterygoid muscle. The aim of this work was to investigate the effects of acute and chronic stress on the medial pterygoid muscle of animals subjected or not to unilateral extraction, through morphological and physiological analyse. Forty male Wistar rats (♂-200g), young adults were randomly divided into two groups: Malocclusion group (M = 20) induced by unilateral upper left molar extraction and Not Malocclusion Group No (S = 20): rats without extractions. Each group (n = 20) was subdivided into four subgroups (n = 5): control group (CG), acute stress (GA), repeated chronic stress (GR) and varied chronic stress (GV). Stress protocols were performed from 14 th day after the extraction. Stress by physical restriction was used in GA (two hours, day 23 th) and GR (day 14 th to 23 th); GV was subjected to five different methodologies (day 14 th to 23 th). Euthanasia and collection of samples were performed on day 23 th. It was evaluated: cell morphology by hematoxylin eosin (HE), metabolic activity and muscle oxidative capacity by staining for succinate dehydrogenase (SDH) and nicotinamide adenine dinucleotide (NADH), production of reactive oxygen species (ROS) and capillary density of muscle by immunohistochemistry for proteins alpha CD-31 and Laminin. Normal distribution of data was observed. A factorial ANOVA test with fixed factors of variation was performed and then Tukey-Kramer test (p <0.05). Stress and malocclusion, isolated or associated, induced morphological and physiological changes in the left medial pterygoid muscle; dimorphism of muscle fibers and nuclei of central localization were induced by both factors; increased oxidative metabolism was observed with stress and antagonistic effect with malocclusion; stress increased muscle capillary density and a tendency to oxidative stress increased was observed. The association of chronic stress and malocclusion had increased the glycolytic metabolism. It was concluded that systemic chronic stress has physiological and morphological effects in the medial pterygoid muscle and associated with masticatory hypofunction, could be a possible cause for the development of TMD.

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Myositis ossificans: Medial pterygoid muscle— A case report

Cited by 34 publications

References 2 publications

Myositis ossificans traumatica of the medial pterygoid

Myositis ossificans traumatica of the medial pterygoid

Complication following lower third molar surgery: myositis ossificans traumatica of the muscles of mastication

Efeitos do estresse sistêmico no músculo pterigóideo medial de ratos com e sem alteração oclusal

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