superior dental plexus superior dental plexus the superior dental plexus is a nerve plexus which supplies the upper jaw. superior dental plexusdistribution of the maxillary and mandibular nerves, and the submaxillary ganglion.detailsidentifierslatinplexus dentalis superiorta98a14.2.01.053ta26236fma77528anatomical terms of neuroanatomy formed by posterior superior alveolar nerve, middle superior alveolar nerve, and anterior superior alveolar nerve.