Title: Quantifying Coronal Tooth Discoloration Caused by Different Endodontic Materials

Biography:

Shlomo Elbahary, is a dentist, endodontic specialist, his main research field is in microbiology, endodontic materials and histology studies using confocal laser microscopy. His main interest and work is in pediatric dentistry. Is always searching for new methods and materials in endodontic in general and specific in pediatric dentistry. Shlomo is a senior lecturer and instructor in Tel Aviv school of dentistry for undergraduate students and in the postgraduate endodontic department specialty program. 

Abstract

Endodontic sealers, Bioceramic materials, gray and white mineral trioxide aggregate (GMTA, WMTA), have been shown to have high rates of success in various endodontic applications. A major drawback is their tendency to discolor teeth. Biodentine (BD), a recenlty developed bioceramic material, has been claimed not to discolor teeth. The aim of this studys was to compare tooth discoloration after applying different pulpotomy base materials (BD, GMTA and WMTA). Methods: ninety  human fully developed permanent and primary incisors teeth were used in this study. Coronal access was achieved by a Tungsten Carbide drill, \and the pulp chambers were accessed and chemo-mechanically debrided. Each material was placed in the pulp chamber, up to the cervical sectioning level. All specimens were incubated at 37â—¦C and 100% humidity for 14 weeks and have been evaluated before the study and weekly. Color was assessed according to the CIE L*a*b* color space system. Results: The ∆E (delta E) of all experimental groups (GMTA, WMTA and BD) were significantly different from the control group at all time points. Color changes in the GMTA and WMTA groups showed significantly higher discoloration compared to BD group in the cervical part of the crown, since week 1. WMTA group showed significant discoloration in the cervical part as of week 1, and gradually increased over time. BD group showed no significant discoloration over time. GMTA group showed the most significant discoloration at week 1 and week 14 (P<0.05).  Conclusions: both GMTA and WMTA pulpotomy materials may discolor tooth structure over time in an extracted primary anterior tooth model. When choosing bioceramic pulpotomy material, BD may be preferable, mainly in esthetic area.