fa SEALING ABILITY OF ORTHOGRADE MTA AND CEM CEMENT IN APICALLY RESECTED ROOTS USING BACTERIAL LEAKAGE METHOD اندودانتیکس Endodontics پژوهشي Research <p> <strong>Introduction:</strong></p><p>  The aim of this in vitro study was to determine the sealing ability of orthograde ProRoot mineral trioxide aggregate (MTA) and calcium enriched mixture (CEM) cement as root-end filling materials. </p><p> <strong>Materials and Methods:</strong></p><p>  Fifty four extracted single-rooted human teeth were used. The samples were randomly divided into 3 experimental groups. In group A and B, 4 mm of WMTA and CEM cement were placed in an orthograde manner and 3 mm of apices were resected after 24 hours. In group C the apical 3 mm of each root was resected and the root-end prepared with ultrasonic tips to a depth of 3 mm and subsequently, then filled with MTA. The apical sealing ability was performed with bacterial leakage method. Statistical analysis was carried out with Chi-square test. </p><p> <strong>Results:</strong></p><p>  There were no significant differences in the extent of bacterial leakage between the three experimental groups (P>0.05).</p><p> <strong> Conclusion</strong>:</p><p>  Based on the limitations of this in vitro study, we concluded that MTA and CEM cement can be placed in an orthograde manner when there is a potential need for root-end surgery. </p><hr><p></p><p> <strong>Source: </strong>Iranian Endodontic Journal </p><p><a href="http://journals.sbmu.ac.ir/index.php/iej/article/view/3589" target="_blank"><font color="#0000ff"> Full Text</font></a></p> Apicoectomy; Bacterial Leakage; Calcium Enriched Mixture; CEM cement; Mineral Trioxide Aggregate; Retrograde Obturation; Root Canal Filling Materials; Seal 0 0 http://idai.ir/browse.php?a_code=A-10-32-2083&slc_lang=fa&sid=1 Saeed Moradi moradis@mums.ac.ir 10031947532846009758 10031947532846009758 Yes Department of Endodontics, Dental Materials Research Center, Mashhad University of Medical Sciences, Mashhad, Iran Reza Disfani 10031947532846009759 10031947532846009759 No Department of Endodontics,Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran Kiarash Ghazvini 10031947532846009760 10031947532846009760 No Department of Microbiology, Mashhad University of Medical Sciences,Mashhad, Iran Mahdi Lomee 10031947532846009761 10031947532846009761 No Department of Endodontics, Dental School, Mazandaran University of Medical Sciences, Mazandaran, Iran