期刊
JOURNAL OF ENDODONTICS
卷 36, 期 11, 页码 1778-1781出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.joen.2010.08.024
关键词
Direct pulp cap; histology; MTA; NEC
资金
- Mashhad University of Medical Sciences
- Endodontic Research Center of Shahid Beheshti University M.C., Tehran, Iran
Introduction: This study was conducted to compare human pulp response to mineral trioxide aggregate (MTA) and a novel endodontic cement (NEC) when used as pulp capping materials after a time period of 2 and 8 weeks. Methods: Thirty-two premolar teeth that were scheduled for extraction for orthodontic reasons were exposed and capped with either MTA or NEC. Half of the specimens underwent extraction and histologic analysis after 2 weeks, and the remaining half were assessed after 8 weeks. Each slide was graded histologically according to the morphology of the dentinal bridge, thickness of the dentinal bridge, presence of odontoblast cells, and inflammation of the pulp. Results: Both MTA and NEC showed significantly better pulp response after 8 weeks compared with 2 weeks, with a thicker and more tubular pattern of the dentinal bridge, less pulp inflammation, and a palisade pattern of odontoblast cells. Although MTA and NEC groups had no significant difference in each measure in both time intervals, NEC induced a thicker dentinal bridge with less pulp inflammation at both 2 weeks and 8 weeks, compared with MTA. Conclusions: MTA and NEC showed similar biocompatibility and favorable response in pulp capping treatment and inducing the formation of the dentinal bridge. (J Endod 2010;36: 1778-1781)
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