Assesment of microleakage rates in class I cavity preperation for multimod, etch and rinse and self etch adhesives in primary and permanent teeth

The aim of this study is to evaluate the amount of microleakage for five different adhesive systems applied with different methods (self etch, selective etch, etch and rinse) in class I cavity restorations of extracted primary and permanent teeth and to asses if there is any difference between primary and permanent teeth with regard to microleakage rate. 110 primary 110 permanent teeth were randomly divided into 11 groups. The adhesives used in this study were All Bond Universal (Bisco Inc., Schaumburg, USA), Single Bond Universal (3M ESPE, St. Paul. MN, USA), Clearfil SE Bond (Kuraray Medical Inc., Tokyo, Japan), Tri-S Plus Bond and Single Bond2 (3M ESPE, St. Paul. MN, USA). All of the groups were restored with Filtek Z250 (3M ESPE, St. Paul. MN, USA) A2 composite resin. All teeth were subjected to thermalcycling (5-55±20C, 1000X) followed by dye penetration test. Quantitative values of microleakage rates were calculated using digital image analysis method on four sections from each tooth. Data were analysed by Kruskal Wallis Variance Analysis, Mann Whitney U Test and Chi Squared Test (p=0.05). According to the results, when applied with self etch method, Clearfil SE Bond and Single Bond Universal showed the lowest microleakage scores in both primary and permanent teeth(p<0.05). In selective etch groups, All Bond Universal and Clearfil SE Bond showed less microleakage scores than Tri-S Plus Bond and Single Bond Universal in permanent teeh (p<0.05). Application of Single Bond Universal with selective etch method resulted in the highest microleakage scores in primary teeth (p<0.05) where other materials showed no statistically significant difference(p>0.05). When all the adhesives applied with selective etch method were compared with Single Bond 2, which is an etch and rinse adhesive, Clearfil SE Bond yielded in the lowest microleakage scores in permanent teeth (p<0.05) and other materials showed no statistically significant difference (p>0,05). Selective etch methods of All bond universal, Single Bond Universal, Clearfil SE Bond, Tri-S Plus Bond showed no significant difference with Single Bond 2 in primary teeth (p>0,05). When microleakage rates of primary and permanent teeth were compared, self etch methods of All bond universal, Single bond universal and Tri-S Plus Bond materials showed higher microleakage rates in primary teeth (p<0.05). Selective etch and etch and rinse methods of All Bond Universal, Single Bond Universal and Tri-S Plus Bond materials and Single Bond 2 showed no statistically significant difference (p<0.05). In primary and permanent teeth, self etch methods of Clearfil SE Bond material showed no statistically important difference (p>0,05), but in selective etch method primary teeth showed higher microleakage rates than permanent teeth (p<0.05).