Abstract
The purpose of this study was to discuss the use of flowable composite resin on preventive resin restoration. A flowable composite resin (Palfique Estelite LV: Tokuyama) was filled in molars and sealed in premolars in vitro, with the use of a one step self-etching primer system (One-up Bond F: Tokuyama). As controls, Restorative Z-100 (3 M) was used as a conventional composite resin, and Single Bond (3 M) as a wet bonding system. The bonding ability, mainly with the enamel, was evaluated and compared, based on marginal leakage after the thermal cycling test.
Single Bond showed a significantly better marginal seal than One-up Bond F both in cavities and in fissures. There was no difference in marginal seal between Palfique Estelite LV and Restorative Z-100 in cavities, for both of the bonding systems. For fissures, One-up Bond F showed results inferior to those for cavities. The results indicate that One-up Bond F does not provide enough etching effect for enamel bonding especially in fissures (on sound enamel).
It was concluded that flowable composite resin can be applied to preventive resin restoration, and is recommended to be used with a wet bonding system which includes phosphoric acid etching (Single Bond), rather than a self-etching primer system (One-up Bond F).
