Poster Presentation

Poster Presentation

PR42 - Spectrophotometric Analysis of Coronal Tooth Discoloration Induced by Bioceramic Materials in the Presence of Blood

Thursday, April 26
10:00 AM - 1:00 PM
Room: Exhibit Hall

Introduction: New calcium-silicate based bioceramic materials have been shown to induce less coronal discoloration. The purpose of this in vitro study is to evaluate the degree of color change induced by various bioceramic materials in the presence and absence of blood. Methods: Eighty extracted human anterior teeth with single canals were accessed, instrumented and sectioned to standardized root lengths. Specimens were filled with experimental materials below the CEJ in eight random groups: EndoSequence RRM putty (Brasseler, GA); EndoSequence RRM fast set putty; Biodentin (Septodont, France); white MTA (Dentsply, PA); either with the presence or absence of blood. Ten additional samples were used for positive (blood only), and negative control (saline only). After incubation in 100% humidity at 37℃, color changes were evaluated with a spectrophotometer (Ocean Optics, FL) on day zero, 30, 60 and 180 after material placement. Data were transformed into CIE L*a*b color values, and corresponding ΔE values were calculated. One-way ANOVA test was performed for statistical analysis. Results: Visual discoloration was observed in all specimens in the presence of blood. RRM putty demonstrated the least color change with the presence of blood while Biodentin showed the most (ΔE = 2.6±1.7 and 5.3±2.9, p< 0.05). When comparing within individual material, Biodentin showed significant difference between the presence and absence of blood (ΔE = 5.3±2.9 and 2.1 ± 0.9, p<0.0001). Conclusion: Contamination with blood of newer calcium silicate materials has the potential to cause coronal tooth discoloration.

Stephanie J. Chen

DDS
University of Pennsylvania

Stephanie is a second year resident at University of Pennsylvania, School of Dental Medicine, Endodontic department. Stephanie earned her DDS degree from Taipei Medical University, Taiwan. She also received training in Chang Gung Memorial Hospital, Taoyuan, Taiwan under a two-year GPR program.

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Meetu Kohli

Clinical Associate Professor of Endodontics, Director Continuing Education and International Program
University of Pennsylvania

Dr. Meetu Ralli Kohli is Clinical Associate Professor and the Director for Continuing Education and International Postdoctoral Program at the University of Pennsylvania, School of Dental Medicine, Endodontic department. Dr. Kohli earned her B.D.S. degree from Government Dental College, Bangalore, India. She pursued her D.M.D. degree as well as specialty training in Endodontics at the University of Pennsylvania, USA. During the course of her training, she received the esteemed Louis I Grossman award, the Samuel R. Rossman scholarship and the Sherrill Ann Siegel award & scholarship for demonstrating excellence in patient care, clinical skills, and research. She is on the Scientific Advisory Board as a reviewer for Journal of Endodontics and International Endodontic Journal. Dr. Kohli has published in national and international peer-reviewed journals and has contributed a chapter on microsurgical retreatment. She is a Diplomate of the American Board of Endodontics. Dr. Kohli also maintains a part-time private practice limited to Endodontics in Pennsylvania, USA.

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PR42 - Spectrophotometric Analysis of Coronal Tooth Discoloration Induced by Bioceramic Materials in the Presence of Blood



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