High impact information on Pterygoid Muscles

• Electromyographic (EMG) activities of the superior (SUP) and inferior heads (INF) of the lateral pterygoid muscle (LPT) were recorded in humans during voluntary stepwise changes in biting force and jaw position that were adopted to exclude the effects of acceleration and velocity of jaw movements on the muscle activity [1].
• Subjects with large masseter and medial pterygoid muscle volumes had flat mandibular and occlusal planes, and small gonial angles [2].
• OBJECTIVE: The minimal tonic firing rates (the lowest firing rates at which motor units fire regularly; MTFR) of single motor units (SMUs) within the lateral pterygoid muscle have not been widely investigated [3].
• RESULTS: Functional 3-D reconstructions of the paratubal structures reveal that the medial pterygoid muscle is acting as a movable hypomochlion of the tensor veli palatini muscle [4].
• A distinct slip of the medial pterygoid muscle was found to attach to the FTC which caused the lingual nerve to be sandwiched between this slip and the main bulk of the medial pterygoid as it inserts into the mandible [5].

Biological context of Pterygoid Muscles

• To avoid a noxious occlusal contact, the muscles of mastication, and particularly the lateral pterygoid muscles, must increase their activity [6].

Associations of Pterygoid Muscles with chemical compounds

• Comparison of phosphocreatine concentration in the human masseter and medial pterygoid muscles by 31P-CSI [7].
• The detailed fibre architecture of the rat medial pterygoid muscle, including the courses and attachment points of muscle fibres, was investigated histologically in 10 micron thick serial sections in the horizontal, coronal and parasagittal planes [8].
• Treatment of inferior lateral pterygoid muscle dystonia with zolpidem tartrate, botulinum toxin injections, and physical self-regulation procedures: a case report [9].

Gene context of Pterygoid Muscles

• An open approach, involving masseter, temporalis, and the medial pterygoid muscles, was utilized, followed by the use of scissors mouth props, Erich arch bars, and postoperative elastic traction [10].

Analytical, diagnostic and therapeutic context of Pterygoid Muscles

• When the lateral pterygoid muscles are not tender to palpation and the stress test is negative, occlusal therapy is not indicated [6].

References