- Marmara Dental Journal
- Vol: 1 Issue: 2
- The Effect of Different Liners on the Microleakege of Class II Restorations after Thermocyclign and ...
The Effect of Different Liners on the Microleakege of Class II Restorations after Thermocyclign and Occlusal Loading
Authors : Suat Özcan, Ihsan Yikilgan, Oya Bala, Mine Üçtaşli, Hüma Ömürlü
Pages : 71-75
Doi:10.12990/ MDJ.201317715
View : 16 | Download : 5
Publication Date : 2014-12-19
Article Type : Other
Abstract :Objective: We evaluated in vitro marginal adaptation of class II resin composite restorations with and without a liner. Materials and Methods: In total, 48 extracted sound human mandibular molars were used. The teeth were prepared following a standardized pattern for a class II cavity. The teeth were then randomly divided into four groups of 12 teeth each: group 1: resinmodified glass ionomer liner (RMGI) + composite resin (CR), group 2: flowable composite liner + CR, group 3: self-adhesive flowable composite liner + CR, and group 4: CR. The specimens were thermocycled and loaded with a mechanical loading device. The methylene blue dye penetration test was used to evaluate microleakage. Results: When specimens were evaluated for occlusal and gingival microleakage, the resin-modified and flowable composite groups showed significantly less microleakage than the control group with no liner. The self-adhesive flowable composite group showed no significant improvement. Conclusions: Flowable composite and RMGI liners were useful in decreasing microleakage, but the self-adhesive flowable composite liner showed no significant advantage.Keywords : Microleakage, liner, occlusal loading, self-adhesive flowable composite, thermocycling