fa Comparison of microleakage and thickness of resin cement in ceramic inlays with various temperatures ترمیمی Cosmetic and Restorative Dentistry پژوهشي Research <b> Background and aims</b>. Microleakage is still one of the major problems of composite-based restorations. This study compared the microleakage and thickness of resin cement in ceramic inlays with various temperatures.<b> </b><div><b>Materials and methods.</b> Class V cavities were prepared on the buccal and lingual aspects of thirty human molars with occlusal margins in enamel and gingival margins in dentin (3 mm wide, 5 mm long and 2 mm deep). Laboratory-made inlays (LMI) were used for buccal cavities, and CAD/CAM inlays (CMI) were used for lingual cavities. All the cavities were divided into six groups (n=10): 1) LMI at -5°C 2) LMI at 50°C 3) LMI at room temperature (25°C) 4) CMI at -5°C 5) CMI at 50°C 6) CMI at room temperature (25°C). Inlays were bonded to cavities in a pulp pressure- and temperature-simulating device. After thermocycling and dye penetration, the teeth were divided into two mesiodistal halves. Amount of dye penetration and film thickness were measured under a stereomicroscope and analyzed with Kruskal-Wallis, Wilcoxon and Spearman's correlation tests (ɑ = 0.05). </div><div><b>Results</b>. There were no statistically significant differences in leakage between different inlay temperatures (P > 0.05). The mean cement thickness in laboratory-made inlays (gingival margin, 83.7 ± 11 and occlusal margin, 84.7 ± 19) was greater than that in CAD/CAM inlays (gingival margin, 69 ± 16 and occlusal margin, 84.7 ± 16). No correlation was found between cement thickness and microleakage either in enamel or dentin for any of the ceramic systems.<div><b> Conclusion.</b> Differences in inlay temperature had no effect on microleakage. CAD/CAM inlays had lower cement thickness than laboratory-made inlays, but this was not related to their microleakage.</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/839" target="_blank"><font color="#0000ff">Full Text</font></a></p></div> microleakage, film thickness, ceramic, CAD-CAM 0 0 http://idai.ir/browse.php?a_code=A-10-32-3265&slc_lang=fa&sid=1 Homayun Alaghemand 100319475328460015028 100319475328460015028 No , Department of Operative Dentistry, Faculty of Dentistry, Babol University of Medical Sciences, Babol, Iran Faezeh Abolghasemzade faezeha64@yahoo.com 100319475328460015029 100319475328460015029 Yes Department of Operative Dentistry, Faculty of Dentistry, Babol University of Medical Sciences, Babol, Iran Farzaneh Pakdel 100319475328460015030 100319475328460015030 No Department of Oral Medicine, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran Reza Judy Chelan 100319475328460015031 100319475328460015031 No DentalMaterial Research Center, Member of Research Committee of Medical Students, Student of dentistry , Faculty of Dentistry , Babol University of Medical Sciences, Babol, Iran.