Clinical evaluation of a self-etching adhesive in class III cavities

Objective: Self-etching adhesives are commonly used in restorative dentistry for bonding resin composite to Class III lesions. The aim of this investigation was to evaluate the clinical performance of a new improved one-step self-etching adhesive (iBOND Self Etch, Heraeus Kulzer, Hanau) in combination with a microhybrid composite (Venus, Heraeus Kulzer, Hanau) to restore a typical class III cavity.

Method: 38 patients (43 ±13.5a) received 72 Class III restorations. All class III cavities were treated after the same protocol and scored according to the Ryge/CDA-criteria. In each cavity the adhesive systems iBOND Self Etch (LOT 010022) was used with the resin composite Venus to restore all cavities. Venus was used as the only restorative material in all cases. After 6 month, 70 fillings [97 %] were available for the follow up investigation.

Results: After 6 month the results [%] of the Ryge/CDA-evaluation for the fillings were: Marginal Adaptation: Alfa: 94, Bravo: 6, Charlie:0, Delta: 0; Anatomic Form: Alfa: 69, Bravo: 31, Charlie 0; Secondary Caries: Alfa: 100, Bravo: 0; Marginal Discoloration: Alfa: 94, Bravo: 6, Charlie: 0; Surface: Romeo: 63, Sierra: 31, Tango: 6, Victor: 0; Color Match: Oscar: 76, Alfa: 20, Bravo: 4, Charlie: 0; Tooth Vitality: Alfa: 100, Bravo: 0; Postoperative Sensitivity: Alfa 1: 96, Alfa 2: 4, Bravo: 0, Charlie: 0, Delta: 0; Integrity of Tooth: Alfa 1: 70, Alfa 2: 24, Bravo: 3, Charlie: 3, Delta: 0; Interproximal contact: Alfa: 83, Bravo: 7, Charlie 10. Two restorations were lost due to extraction of the teeth for prosthetic reasons.

Conclusion: After 6 month, all iBOND Self Etch restorations retained and showed clinically and aesthetically excellent or good results. In four out of 70 restorations a Bravo score for marginal discoloration was detected. This study was supported by Heraeus Kulzer, Hanau, Germany.