Study Overview
Title: A randomized controlled 5-year prospective study of two HEMA-free adhesives, a 1-step self-etching and a 3-step etch-and-rinse, in non-carious cervical lesions
Author: Jan W.V. van Dijken
Published in: Dental Materials, 2013
Link: Full text PDF
Study Aim
To evaluate the 5-year clinical dentin bonding effectiveness of two HEMA-free adhesives—G-Bond (1-step self-etching) and cfm (3-step etch-and-rinse)—in Class V non-carious cervical lesions.
Methodology
- Participants: 67 patients
- Total Restorations: 169
- G-Bond: 67 restorations
- cfm: 51 restorations
- XP Bond (control, HEMA-containing): 51 restorations
- Follow-up: Evaluated at baseline and annually for 5 years using modified USPHS criteria.
- Outcome Measure: Percentage of lost restorations as an indicator of dentin bonding efficiency.
Results
- Total Lost Restorations: 22 (13.8%)
- G-Bond: 5 restorations (7.9%)
- cfm: 4 restorations (8.3%)
- XP Bond: 13 restorations (27.1%)
- Statistical Significance: Loss of retention was significantly lower in the HEMA-free adhesives compared to the HEMA-containing XP Bond (p < 0.05).
- Additional Findings:
- No postoperative sensitivity reported.
- No secondary caries observed.
Conclusion
Both HEMA-free adhesives demonstrated successful long-term durability in non-carious cervical lesions. Despite concerns, the 1-step self-etching adhesive (G-Bond) showed one of the best reported clinical dentin bonding effectiveness.