Integrins are heterodimeric cell surface membrane proteins linking the extracellular matrix to actin. α7B integrin is detected in proliferating and adult myofibers, whereas α7A plays a role in regenerating muscle fibers with a minor function in mature muscle fibers. The expression levels of β1A appear to be very low, whereas β1D appears to be the ...

Rabies virus pathogenesis was studied in a mouse model by inoculation of the masseter muscle. At different intervals, the masseter muscle, trigeminal ganglia, and brain were analyzed for virus-specific RNA with a polymerase chain reaction assay, which revealed that as early as 18 h postinfection (p.i.), virus-specific RNA was present in the trigeminal ganglia, and at 24 h p.i., viral RNA was id...

Muscles control body posture and movement by extrafusal and intrafusal (muscle spindle) fibres. The purpose of this thesis was to provide insight into the muscular basis for human jaw function at young age. Extrafusal and intrafusal fibres in the young masseter, and for comparison young biceps, were examined for composition of fibre types and myosin heavy chain (MyHC) isoforms by means of morph...

Background: EMG (electromyography) has been used to determine the masticatory efficiency of the muscles of mastication. Method: In this study, Temporalis and Masseter muscle activity of patients with unilateral missing mandibular 1 molar were evaluated pre and post rehabilitation with three unit fixed partial denture prosthesis. Six male and four female patients, within the age range of 17–35 y...

BACKGROUND AND AIM: Even though hemangiomas are prevalent tumors in the region of head and neck, they are comparatively rare inside the mouth and less frequently detected by dental professionals. Therefore, the aim of this case report is to present such a rare variation of hemangioma manifested within the substance of the masseter muscle.CASE REPORT: We report a unique case of intramuscular hem...

Dr. (Mrs.) Chandralekha .B, MDS Former Head of the Department of Orthodontics, Government Dental College & Hospital, Fort, Bangalore 560 001. Ph: 09448-091115 The present study investigated the effect of masseter muscle thickness on maxillary dental arch width and growth pattern of face. Sample comprised of 40 patients, (20 females, 20 males) between 18 to 23 years. They were subdivided accordi...

In a previous experiment, we found that masseter muscle spindles show functional plasticity after 5 to 15 days under increased occlusal vertical dimension (iOVD). In the present study, we hypothesized that spindle function would eventually recover if longer observation periods were allowed. Therefore, in this study we investigated changes in masseter muscle spindle function over periods of 1 da...

introduction: bilateral sagittal split osteotomy (bsso) of mandible is vastly used in treatment of mandibular deficiencies and discrepancies. since this method could affect esthetic as well as function, evaluating these effects from various aspects is crucial. this study assessed the effects of this technique on the function of masseter muscle, jaw movements, and sensory changes along with fail...

background: the existence of a pathophysiological link between headaches and muscle activity pattern is still being debated. the purpose of this study was to investigate the effect of pain on the timing pattern of the masseter muscle in patients with tension-type headache (tth) and migraine without aura (moa). methods: 57 women (22 controls, 19 moa and 16 tth) participated in the study. the ele...