Effect of intracanal medicaments on matrix metalloproteinase-9 and vasoactive intestinal peptide secretion in periapical lesions of re-treated canals: a randomized controlled clinical study
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The aim of this study was to evaluate the effect of calcium hydroxide (Ca[OH]2) and chlorhexidine (CHX) gel on matrix metalloproteinase-9 (MMP-9) and vasoactive intestinal peptide (VIP) secretion in periapical lesions.
Materials and methods
A total of 60 patients were randomly divided into two groups that were to receive different medications. Pre-and post-treatment samples were collected from the interstitial fluid of periapical lesions using sterile paper points. VIP and MMP-9 levels were measured by enzyme-linked immunosorbent assay kits, and the data were statistically analyzed.
Gender and smoking habits had no effect on the pre- and post-treatment VIP and MMPs levels. Intragroup analyses revealed that in the Ca(OH)2 group, the post-treatment VIP level was found to be significantly higher than the pre-treatment VIP level. In the CHX group, the post-treatment MMP-9 level was significantly higher than the pre-treatment MMP-9 level.
According to the results of the present study, the type of the medication affected the amount of periapical VIP and MMP-9 secretion.
VIP is a neuropeptide that promotes new bone formation. Thus, intracanal Ca(OH)2 medication may accelerate the repair process of bone tissue.
KeywordsCa(OH)2 CHX gel Vasoactive intestinal peptide Matrix metalloproteinase-9
Manuscript in Lieu of Thesis
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study protocol was approved by the ethical committee of the Faculty of Dentistry, Atatürk University (decision no. 2017-28).
Informed consent was obtained from all individual participants included in the study.
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