Stephen C. Bayne, MS, PhD, is an emeritus professor in the Department of Cariology, Restorative Sciences, and Endodontics at the University of Michigan (U-M) School of Dentistry in Ann Arbor. He is a past president of the Academy of Dental Materials, American Association for Dental Research and International Association for Dental Research. His clinical and laboratory research results on dental materials have been presented in 135 published articles, 274 published abstracts, and 501 state and national presentations. Bayne can be reached at: sbayne@umich.edu.
The etiology of these lesions remains unknown, but clinical judgment and documentation of signs and symptoms can help clinicians determine an appropriate course of action.