Hemimasticatory spasm (HMS) is a rare disorder of the trigeminal nerve characterized by paroxysmal involuntary contractions of the unilateral jaw-closing muscles. HMS has been frequently described in association with facial hemiatrophy or localized scleroderma. A 42-year-old female presented with involuntary paroxysmal spasms of the left face, of 6 months duration. Her lower face on the left wa...

We have created an alternative method for facial reanimation. This new surgical procedure involves masseter muscle transposition combined with tensor fascia lata, and the zygomatic arch is used as a trochlea to achieve reconstruction of inferior facial paralysis. This method was used on five patients with facial palsy after excision of a malignant parotid tumour. Wide skin defect exposing the m...

Bilateral sagittal split osteotomy (BSSO) in order or advance mandible is a common surgery for patients with mandibular retrognathism. While various complications could result after this surgery, the aim of the present study was to evaluate the effect of BSSO surgery on electric activity and function of masseter muscle. 36 patients in need of mandibular advancement with BSSO technique participa...

BACKGROUND Myositis Ossificans is a rare heterotopic bone formation within a muscle being the masticatory muscles exceptionally involved. In most cases there is a previous trauma, bearing in mind that there may be many other etiologies. CT scan and panoramic radiographs along with histological findings are essential diagnostic aids. CASE DESCIPTION We report a rare case of MO of masseter musc...

It is widely accepted that an interaction exists between masticatory muscle function and craniofacial growth. In adults, correlations have been found between facial dimensions and jaw-muscle cross-sectional area, and between facial dimensions and masseter muscle thickness. Little is known about growth of the human masticatory muscles and its relation with facial dimensions at different ages. In...

Botulinum toxin (BTA) is a bacterial-derived extract that can inhibit muscle contraction, acting directly on the absorption of acetylcholine. Thanks to this property, botulinum has been used in aesthetic and general medicine for several years. Nowadays, use being deepened address problem bruxism. In scoping review, results studies literature last 10 years were analyzed. Indeed, 12 reports (foun...

Introduction: Echinococcus granulosus is a small intestinal tapeworm found in dogs and occasionally in other carnivores. In the literature, information on the incidence of Echinococcus manifestations in the head (noncerebral) and neck region is relatively rare. Purpose: To present a case of an unusual case of echinococcus in the masseter muscle of a young female patient at the Department of Ora...

This study analyzed the effects of the unilateral removal and dissection of the masseter muscle on the facial growth of young rats. A total of 30 one-month-old Wistar rats were used. Unilateral complete removal of the masseter muscle was performed in the removal group, and detachment followed by repositioning of the masseter muscle was performed in the dissection group, while only surgical acce...

BACKGROUND Patients with an orofacial pain history appear to be more susceptible to occlusal interference pain in dental practice for unknown reasons. Pain memory has a critical function in subsequent pain perception. This study aims to explore whether orofacial pain memory could affect the masticatory muscle pain perception for occlusal interference. METHODS Cross-injection of 2% carrageenan...

There is not fine information regarding the influence of diet on development of masseter muscle and its mitochondria. Objective of this study is to compare mitochondrial enzyme activity, and morphology of masseter muscle fiber cells and its mitochondria prepared from rats fed soft diet to those fed hard diet. Cross-sectional area of fiber cells and number of mitochondria per unit area prepared ...