Oral Health and Dental Management

Spectrophotometric analysis of tooth discoloration induced by MTA based materials

7^th Global Dentists and Pediatric Dentistry Annual Meeting

March 31- April 01, 2016 Valencia, Spain

Seoyoun Shim, Jae-Hwan Kim, Nam-ki Choi and Seon-Mi Kim

Chonnam National University, Republic of Korea

Posters & Accepted Abstracts: Oral Health Dent Manag

Abstract:

Introduction: Mineral trioxide aggregate (MTA) materials have been used for many years as a pulp therapy material. Proroot wMTA�? has a major drawback that it causes tooth discoloration. Alternatives have recently been developed such as Biodentine�?, Endocem�?and RetroMTA�?. Objective: This study assessed discoloration of crown when these various MTA-based materials were placed in the coronal aspect of the root canal. Methods: The teeth (n=75) were randomly assigned to four experimental group, each of Biodentine (n=15), Proroot wMTA (n=15), Endocem (n=15), RetroMTA (n=15) and one negative control groups (n=15). Teeth were sectioned in the coronal third of the root complex and each of materials was placed into the pulp chambers. Color was assessed using spectrophotometer at 8 time points: initial, 1 day, 1 week, 2, 4, 8, 12 and 16 weeks. Statistical analysis was performed by using 2-way repeated analysis of variance and a Bonferroni�??s method with P<0.05. Results: Proroot wMTA induced significant decreases in L* values. The total color change caused by Proroot wMTA exceeded the perceptible threshold for the human eye (3.7�?��?E*) after 16 weeks. The Biodentine and RetroMTA showed color stability. Tooth samples from the Endocem group presented indistinct grayish color changes during the course of the 16 weeks. Conclusion: Less discoloration was observed with Biodentine and RetroMTA than with Proroot wMTA. The Endocem group showed the largest �?E* value after the 1 day but after that, the constant �?E* change showed for the rest of period. The application of Proroot wMTA induced a decrease in lightness in teeth.

Biography :

Seon-Mi Kim has graduated in 1992 and has completed Master’s degree in 1995. She has completed her PhD in 1998 from the Dental school in Chonnam National University, South Korea. She has published large number of papers in renowned journals and is actively involved in clinical pediatric dentistry.

Email: ranoteeth@gmail.com