OBJECTIVES Occlusal trauma is one of the most common forms of oral biting dysfunction. Long-term occlusal trauma could weaken the stomatognathic system; especially damage one's masticatory muscle. Through using the rat model, this study investigated the trophic effect of ciliary neurotrophic factor (CNTF) on injured masseter muscle. MATERIALS AND METHODS Male Wistar rats (n=36) were randomly ...

BACKGROUND Understanding the effects of muscle function on facial bone growth may help us treat children with facial anomalies. Facial bone growth is known to be a result of both genetic and epigenetic influences. One of the main epigenetic factors controlling growth is thought to be muscle action. The purpose of this study was to establish a model of single facial muscle paralysis and to ident...

BACKGROUND Oral submucous fibrosis (OSMF) is a chronic insidious disease of the oral mucosa, commonly seen in South East Asia. It occurs mainly due to the habit of quid or gutkha chewing. There is a clear dose dependent relationship between gutkha chewing and development of OSMF, also due to continuous chewing for larger intervals of time unnecessary forces are exerted on the muscles mainly the...

This relationship between the function of the muscles of mastication and craniofacial form was investigated in young adult monkeys by increasing the functional length of the elevator muscles of the mandible non-invasively by a bite-opening splint cemented to the maxillary dentition. The major adaptations to increased vertical dimensional were (1) marked superior and some anterior displacement o...

Objetivo: Descrever um caso de Hipertrofia do músculo masseter unilateral, associado a artrose. Detalhamento caso: Paciente gênero feminino, 45 anos, melanoderma, procurou atendimento odontológico em uma cidade Alagoas, encaminhada por ortopedista. A mesma queixava-se peso no lado esquerdo rosto e dores cabeça frequentes, revelando já ter sido submetida procedimento cirúrgico consequência, deno...

The purpose of this investigation was to measure the thickness of the masseter, levator labii superioris, and zygomaticus major muscles; to examine the reproducibility of ultrasonographically measured muscle thickness; to evaluate the association between facial and masticatory muscle thickness and vertical facial pattern; and to test whether the variation in muscle thickness is related to the v...

We have previously reported that the level of 5-HT in the masseter muscle is increased in patients with fibromyalgia as compared with healthy subjects and that high intramuscular level of 5-HT is associated with muscle pain. We have also reported that injection of the 5-HT(3) receptor antagonist granisetron (GRA) into the masseter muscle of healthy subjects reduced pain induced by 5-HT and abol...

The difficult airway is already a challenging situation for anesthesiologists, in that scenario Succinylcholine (Sch) use because of its rapid onset and short duration action makes it neuromuscular blockage drug choice. Development masseter muscular rigidity thought to be an early indicator the occurrence dreaded consequence, malignant hyperthermia. Consequently, essential understand potential ...

There are few documented cases of facial abscesses due to masseter abscess formation in South American camelids. Facial swellings camelids have been reported and frequently apical tooth root infections. Masseter has described people. However, this lesion not previously This case report describes the clinical signs, diagnostic procedures pathological findings adult male Huacaya alpaca suffering ...

The H-reflex response in large and small single motor units in human deep anterior masseter was studied to investigate the distribution of muscle spindle afferents onto masseter motoneurons. We found that only the larger units displayed H-reflex responses. This indicates preferential distribution of muscle spindle input onto large motoneurons or a skewed distribution of tonic presynaptic inhibi...