The Efficacy of QMix on the Root Canal Dentin After Different Exposure Time Periods: A SEM and an EDS Analysis

Corresponding Adress/İletişim Adresi: Baran Can SAGLAM Bülent Ecevit University, Faculty of Dentistry, Department of Endodontics, Kozlu, Zonguldak, Turkey Phone/Tel: 0 372 261 3404 E-mail/E-posta: barancansaglam@gmail.com Received / Geliş tarihi : 05.10.2015 Accepted / Kabul tarihi : 05.11.2015 DOI: 10.21306/jids.2015.1.04 AbSTRACT Aim: The irrigation solutions and chelating agents are able to change the chemical composition of dentin. This study aimed to evaluate the efficacy of QMix on the removal of smear layer and the Ca/P ratio of root canal dentine after different exposure time periods. Material and Method: Sixty extracted teeth were prepared and divided into 5 groups according to the application time of the solution (n=12). In group 1, no irrigation was performed (control). The other groups were defined as follows consecutively; QMix solution were used for 1, 3, 5 and 10 minutes. Smear layer scores, erosion scores and Ca/P ratios of each group were evaluated by SEM and EDS. Results: In apical and middle regions, smear layer scores of 10 minute group, was significantly lower than 1 minute group (P<0.05). No peritubular or intertubular erosion was observed according to the erosion scores. Control group showed higher Ca/P ratio than the other groups without significant differences (P>0.05). Conclusion: QMix is able to remove smear layer effectively in 10 minutes without causing any erosion in dentinal tubules or alteration in the Ca/P ratio.