Effect of lining with a flowable composite on internal adaptation of direct composite restorations using all-in-one adhesive systems.
The purpose of this study was to evaluate the effect of lining with a flowable composite on internal adaptation of composite restorations using three all-in-one adhesive systems; Bond Force (BF), G-Bond Plus (GP), and OptiBond All-in-one (OP), and a two-step self-etching adhesive system; Clearfil SE Bond (SE). They were applied to each cylindrical cavity prepared on the human dentin. The cavity surface was lined with/without a flowable resin composite prior to filling with a resin composite (FL/NL). After water storage for 24 h, the specimens were sectioned and polished, and internal adaptation of the restorations was assessed using a confocal laser scanning microscopy. For SE, a perfect cavity adaptation was recognized in both FL and NL. For BF, GP and OP, cavity adaptation was material dependent in NL, whereas no gap formation was observed in FL. However, voids formation was observed at the composite-adhesive-dentin interface in every all-in-one adhesive system.
Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
Chika
C
Yahagi
Tomohiro
T
Takagaki
Alireza
A
Sadr
Masaomi
M
Ikeda
Toru
T
Nikaido
Junji
J
Tagami
D003188:Composite Resins; D003736:Dental Cavity Lining; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000379:methods*; D003804:Dentin; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006801:Humans; D018613:Microscopy, Confocal; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements / Q000737:chemistry
D003188:Composite Resins; D017220:Dentin-Bonding Agents; D019279:Resin Cements; C527485:estelite flow quick