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ORIGINAL ARTICLE
Year : 2019  |  Volume : 16  |  Issue : 3  |  Page : 136-141

Enhanced bioactivity and interfacial marginal adaptation of mineral trioxide aggregate and Biodentine materials modified by eggshell powder at root dentine


1 Department of Endodontics, Faculty of Dentistry, Beni Suef University, Beni Suef, Egypt
2 Department of Dental Bio-Materials, Faculty of Dentistry, Al-Azhar University, Cairo, Egypt

Correspondence Address:
Assistant Professor Ramy A. Abdelrahim
Department of Dental Biomaterials, Faculty of Dentistry, Al-Azhar University, Mokattam, Elhadaba Elwasta, 1082
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/tdj.tdj_16_19

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Objectives: Mineral trioxide aggregate (MTA) as silicate-based cement material may provide better bioactivity than Biodentine material which used as a replacement to MTA in dental practice in different endodontic uses. Also the modifying MTA and Biodentine by adding eggshell powder (ESP) may improve their bioactivity and promote the formation of a reliable sealing through formation a thick and continuous interfacial layer at root dentine/material interface. Aim: This study was aimed to investigate marginal adaptability, the presence or absence of interfacial layer, and enhanced bioactivity's of MTA and Biodentine modified by addition of ESP, at the root dentine/material interface. Materials and methods: Thirteen root dentine segments of about 2 mm thickness were obtained from extracted human teeth and mechanically prepared by endodontic files to enlarge their canals. The specimens were then divided into six groups (n=5), each group were filled with unmodified MTA and Biodentine and modified with 0.5 and 1% ESP. The specimens were immersed in Hank's Balanced Salt Solution simulating body fluid for 30 days. The specimens were then, examined by scanning electron microscopy and energy disperse x-ray spectroscopy (EDX) to examine the presence or absence of interfacial layer and Ca/P ratio. Results: The interfacial layer can be seen in MTA and Biodentine groups that modified with 1% ESP. Also, MTA showed better marginal adaptability than Biodentine groups. There was a statistically significant difference in the Ca/P ratio among the all investigated groups. Conclusion: Addition of ESP to MTA and Biodentine can improve the mineral deposition at root dentine/material interface and also improve their sealing ability through the formation of interfacial layer.


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