%0 Journal Article
%T DETERMINATION OF THE LENGTH AND PENETRATION POINT OF THE MASSETERIC NERVE IN THE MASSETER MUSCLE DETERMINACI¨®N DE LA LONGITUD Y PUNTO DE PENETRACI¨®N DEL NERVIO MASET¨¦RICO EN EL M¨²SCULO MASETERO
%A Fernando Fusari Bento de Lima
%A Nilton Alves
%J Revista chilena de anatom¨ªa
%D 2002
%I Scientific Electronic Library Online
%X With the aim of helping in the diagnosis and treatment of the lesions that affect the muscles enervate for masseteric nerve, as well as to offer anatomical information of great importance for the accomplishment of surgeries in the infratemporal area we have done this study. It has the objective to determinate the length and the penetration point of the masseteric nerve, in the masseter muscles. Twenty hemiheads were used, fastened in formol, of adult individuals of both sexes and different breed. Initially, it was made the dissection of the pieces by an endocranian access, once located the nerves, we passed to the mensuration of the same ones, using as proximal reference the oval foramen and as distal reference the penetration point of the nerve in the muscle. For the determination of the penetration point we used the zygomatic arch as reference. The penetration points were projected to the surface with the aid of a pin, and compared with the references already described giving thus, subsidies for an eventual approach of those structures for the surface. The obtained results were analyzed in a statistics, where we could conclude that there are no significant differences in the length among the right and left sides. We ended although the medium length of the masseteric nerve is of 45,26mm, and that the masseteric nerves penetrate in the superior third of the masseter muscle El conocimiento anat¨®mico de la regi¨®n infratemporal es importante desde el punto de vista an¨¢tomo-quir¨²rgico. Por tal motivo y con el objetivo de ayudar en el diagn¨®stico y tratamiento de las lesiones que afectan al m¨²sculo masetero, determinamos la longitud y el punto de penetraci¨®n del nervio maset¨¦rico en el m¨²sculo masetero. Utilizamos 20 hemi-cabezas formolizadas, de individuos adultos, de ambos sexos y diferentes grupos ¨¦tnicos. Inicialmente se efectu¨® la disecci¨®n de las piezas anat¨®micas por v¨ªa endocraniana, donde se localizaron los nervios maset¨¦ricos de ambos lados. ¨¦stos fueron medidos usando como punto de referencia proximal el foramen oval y como referencia distal la penetraci¨®n del nervio en el m¨²sculo, relacion¨¢ndose esta ¨²ltima referencia con el arco cigom¨¢tico. Los puntos de penetraci¨®n se proyectaron a la superficie con la ayuda de un alfiler y se relacionaron con las estructuras anat¨®micas. La longitud promedio del nervio maset¨¦rico fue de 45,26mm, no existiendo diferencias estad¨ªsticamente significativas entre los lados izquierdo y derecho. El nervio penetra en el tercio superior del m¨²sculo masetero
%K Nervio maseterico
%K M¨²sculo masetero
%K Anatom¨ªa
%K Masseteric nerve
%K Masseter muscle
%K Anatomy
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-98682002000100004