Lower Gwynedd Endodontists, PC. Practice Limited to Endodontics. Our office uses the highest current standards of treatment and, as a consequence we employ the latest advances in Endodontics including digital radiography, microscopes for every procedure, ultrasonics, Ni-Ti rotary files and rotary systems, total digital software (TDO), and other innovative techniques. We are committed to using technological innovations as they become available.