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Quintessence Publishing: Journals: JAD

 

The Journal of Adhesive Dentistry

Edited by Jean-François Roulet

ISSN (print) 1461-5185 • ISSN (online) 1757-9988

Publication:

March/April 2011
Volume 13 , Issue 2



Pages: 111 - 115
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MMP-Inhibitory Effect of Chlorhexidine Applied in a Self-etching Adhesive

Zhou, Jianfeng / Tan, Jianguo / Yang, Xu / Xu, Xuemei / Li, Deli / Chen, Li

Purpose: To evaluate the MMP-inhibitory effect of chlorhexidine when incorporated in the primer of a two-step selfetching adhesive (Clearfil SE Bond). Materials and Methods: Powdered dentin made from human teeth was treated with Clearfil SE Bond primers containing chlorhexidine of different concentrations for 20 s or for 2 min. The collagenolytic activity of the dentin powder was assayed using fluorescein-labelled collagen. Results: Untreated dentin powder contains a low but measurable level of intrinsic activity, which was significantly inhibited by 0.05% chlorhexidine. Treating dentin powder for 20 s with SE Bond primers containing chlorhexidine (0.5%, 1.0%, and 2.0%) reduced the collagenolytic activities by 15.6%, 44.9%, and 56.7% respectively. When treated for 2 min, only SE Bond primer containing 2.0% chlorhexidine could inhibit the collagenolytic activity by 41.1%. Conclusion: When incorporated in a two-step self-etching adhesive primer (Clearfil SE Bond primer), chlorhexidine can partially maintain its inhibitory effect on MMPs.

Keywords: chlorhexidine, matrix metalloproteinases, self-etching adhesives, bond degradation, collagenolytic activity

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