IMPORTANCE The temporalis muscle has the potential to substitute for the function of paralyzed facial muscles in a single-stage procedure when transferred as a muscle-tendon unit (MTU). OBJECTIVE To measure the available excursion of the temporalis MTU after release from the coronoid. DESIGN, SETTING, AND PARTICIPANTS Thirteen consecutive patients undergoing the temporalis MTU transfer proced...

BACKGROUND Temporalis muscle hypertrophy is a rare entity of masticatory muscle hypertrophy. All types of masticatory muscle hypertrophies have been documented of which temporalis muscle hypertrophy is one. Temporalis muscle hypertrophy is most commonly bilateral and usually associated with other types of masticatory muscles hypertrophy such as masseter or pterygoid hypertrophy. However, isolat...

BACKGROUND The use of rest surface EMG of jaw elevator muscles is still debated. The low voltage recorded in anterior temporalis muscle by electromyography (EMG) in rest position could be affected by electronic noise or by activity coming from other muscles. Our goal was to evaluate the physiological behaviour of the anterior temporalis by surface EMG at rest mandible position during open or cl...

OBJECTIVE To assess whether N-methyl-D-aspartate (NMDA) receptor (NR) or oestrogen receptor (OR) expression plays a role in the differences that temporalis muscle afferent fibres are less sensitive to peripheral receptor activation than masseter muscle afferent fibres and do not exhibit sex-related differences in NMDA-evoked discharge. METHODS Immunohistochemical techniques were used to exami...

The aim of this study was to investigate masticatory muscle activity during deliberately performed functional and non-functional oral tasks. Electromyographic (EMG) surface activity was recorded unilaterally from the masseter, anterior temporalis and suprahyoid muscles in 11 subjects (5 men, 6 women; age = 34.6 +/- 10.8 years), who were accurately instructed to perform 30 different oral tasks u...