fa The effect of thickness on the sealing ability of CEM cement as a root-end filling material اندودانتیکس Endodontics پژوهشي Research <b> Background and aims.</b> Different materials have been used for root-end filling during surgical endodontic treatment. The aim of this in vitro study was to evaluate the dye penetration in different thicknesses of calcium enriched mixture (CEM) cement as root-end filling material.<div>  <b>Materials and methods.</b> Following root canal filling in 70 extracted human single-rooted premolar teeth, the apical 3 mm of their root-ends was resected the root-end cavities with depths of 1, 2 and 3 mm were prepared by ultrasonic retrotips and filled with CEM cement. After setting of cement, the roots were immersed in 2% Rhodamine B and the dye leakage was measured under stereomicroscope (×16) using Image J software. The data were analyzed by one-way ANOVA and Bonferroni post hoc tests at 5% significance level. </div><div><b>Results.</b> The means and standard deviations of dye penetration in the 1, 2, and 3 mm groups were 3395.5 ± 1893.4, 3410.4 ± 1440.5, and 2581.6 ± 1852.9 µm, respectively. The one-way ANOVA analysis indicated significant differences (P < 0.001) however, the Bonferroni post hoc test revealed that only the positive control group differed significantly from the experimental groups (P < 0.001). </div><div><b>Conclusion.</b> The findings demonstrated CEM cement to have an adequate root-end sealing ability in 3-mm thickness.</div><hr><p class="MsoNormal" style="text-align: left direction: ltr unicode-bidi: embed"><b>Source: </b>Journal of Dental Research, Dental Clinics, Dental Prospects </p> <p class="MsoNormal" style="text-align: left direction: ltr unicode-bidi: embed"><a href="http://dentistry.tbzmed.ac.ir/joddd/index.php/joddd/article/view/2055" target="_blank"><font color="#0000ff">Full Text</font></a></p> Calcium enriched mixture, CEM cement, Leakage, root-end filling materials, sealing efficacy 0 0 http://idai.ir/browse.php?a_code=A-10-32-3305&slc_lang=fa&sid=1 Saeed Rahimi 100319475328460015220 100319475328460015220 No Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran/Department of Endodontics, School of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran Saeed Asgary 100319475328460015221 100319475328460015221 No Iranian Center for Endodontic Research, Dental Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran Mohammad Samiei samiei.moh@gmail.com 100319475328460015222 100319475328460015222 Yes Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran/Department of Endodontics, School of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran Mahmoud Bahari 100319475328460015223 100319475328460015223 No Department of Operative Dentistry, School of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran Seyyed Mahdi Vahid Pakdel 100319475328460015224 100319475328460015224 No Department of Prosthodontics, School of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran Rasoul Mahmoudi 100319475328460015225 100319475328460015225 No