fa Microleakage in Class V Cavities Restored with Sandwich Technique: Self-Etch versus Total-Etch Bonding Systems ترمیمی Cosmetic and Restorative Dentistry پژوهشي Research <p style="background-color: rgb(239, 243, 250)"><strong style="margin: 0px padding: 0px border: 0px"><i style="margin: 0px padding: 0px border: 0px">Objective: </i></strong>Microleakage has always been a problem in restorative dentistry. To decrease microleakage, modern bonding systems, different application methods and sandwich technique have been recommended. The purpose of this study was to assess the microleakage in class V cavities restored with open sandwich technique using self-etch and total-etch bonding systems.</p><p style="background-color: rgb(239, 243, 250)"> <strong style="margin: 0px padding: 0px border: 0px"><i style="margin: 0px padding: 0px border: 0px"> Methods: </i></strong>In this <i style="margin: 0px padding: 0px border: 0px">in vitro</i> study, class V cavities were prepared on the buccal and lingual surfaces of 20 extracted sound human third molars and restored with sandwich technique. Fuji II LC glass ionomer (GI) was applied to the cavity floor. After curing, half the cavities received Single Bond and the other half, Clearfil SE Bond application and were all restored with Z250 composite resin. Specimens were immersed in 2% fuchsin solution for 24 hours. After copious water irrigation, specimens were sectioned and evaluated under a stereomicroscope to determine microleakage. Data were analyzed using the Mann-Whitney U test (p<0.05).</p><p style="background-color: rgb(239, 243, 250)"> <strong style="margin: 0px padding: 0px border: 0px"><i style="margin: 0px padding: 0px border: 0px"> Results: </i></strong>The microleakage at the GI-composite interface was less than that at the occlusal and gingival margins but this difference was not significant. No significant difference was found in microleakage between the two bonding agents in neither of the two layers.</p><strong style="margin: 0px padding: 0px border: 0px font-size: 11px line-height: 24.2000007629395px background-color: rgb(239, 243, 250)"><i style="margin: 0px padding: 0px border: 0px">Conclusion: </i></strong><span style="font-size: 11px line-height: 24.2000007629395px background-color: rgb(239, 243, 250)">The etch & rinse and self-etch systems are similar in terms of microleakage</span><hr><p class="MsoNormal" style="text-align: left direction: ltr unicode-bidi: embed"><b>Source: </b>Journal of Dental School Shahid Beheshti University of Medical Sciences </p> <p class="MsoNormal" style="text-align: left direction: ltr unicode-bidi: embed"><a href="http://jds.sbmu.ac.ir/browse.php?a_id=1375&sid=1&slc_lang=en" target="_blank"><font color="#0000ff">Full Text</font></a></p> Bonding, Glass ionomer, Microleakage, Sandwich technique, Self-etch system, Total etch system., 0 0 http://idai.ir/browse.php?a_code=A-10-32-2948&slc_lang=fa&sid=1 Narges Panahandeh 100319475328460013708 100319475328460013708 No Dept. of Operative Dentistry, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran Mahsa Sheikholeslamian mahsa.sheikh@gmail.com 100319475328460013709 100319475328460013709 Yes Dept. of Operative Dentistry, Dental School, Alborz University of Medical Sciences, Alborz, Iran Hossein Farzaneh 100319475328460013710 100319475328460013710 No