Posterior superior alveolar nerves contribute to sensation in the anterior teeth

There is no available data on the occurrence rate of a converged alveolar canal, detailed three-dimensional (3D) courses canals/grooves (ACGs), or contribution each superior nerve to area in maxilla. This study aimed clarify 3D ACGs, relationship between ACGs and nerves, posterior nerves (PSANs) using computed tomography (CT) with histological analysis. During gross anatomy course at Niigata University, we investigated nine human cadavers. All anterior into common which contained blood vessels several bundles surrounded by perineurium, located nasal floor near pyriform aperture. Histometrical analysis clarified that 16.3% this canal were derived from PSANs, 67% dispersed while they coursed down floor. seems be density number remaining teeth. Data obtained observing their suggest PSANs partially contribute nociception