RESULTS Comparison of retention of class-V adhesive restorations as a measure to determine clinical bonding effectiveness of adhesives revealed that glass-ionomers most effectively and durably bond to tooth tissue .
Three-step etch- and -rinse adhesives and two-step self-etch adhesives showed a clinical ly reliable and predictably good clinical performance .
The clinical effectiveness of two-step etch- and -rinse adhesives was less favourable , while an inefficient clinical performance was noted for the one-step self-etch adhesives .
SIGNIFICANCE Although there is a tendency towards adhesives with simplified application procedures , simplification so far appears to induce loss of effectiveness .
OBJECTIVES The purpose of this paper was to review current literature on the clinical effectiveness of contemporary adhesives when used to restore cervical non-carious class-V lesions .
Restoration retention in function of time was recorded in order to find out if adhesives with a simplified application procedure are as clinical ly effective as conventional three-step adhesives .
Six-month clinical evaluation of two dentin adhesives applied on dry vs moist dentin.
PURPOSE Acid-etched dentin has been described to easily collapse when it is dried with air after being rinsed with water under laboratorial " ideal " conditions . Manufacturers of modern dentin adhesives recommend leaving dentin moist , regardless of the solvent used in their proprietary dentin adhesives . Nevertheless , many clinicians still dry the cavity preparation after rinsing off the etching gel to check for the enamel frosted aspect . The null hypothesis to be tested in this clinical study was that drying dentin with air upon rinsing off the acid would not result in lower short-term retention rates than when the cavity was left visibly moist . MATERIAL S AND METHODS Upon Internal Review Board approval , thirty-five patients were enrolled in this study . A total of 128 restorations divided into four groups were inserted and evaluated at baseline : ( A ) Prime & Bond NT , an acetone-based adhesive , applied on moist dentin ; ( B ) Prime & Bond NT applied on dentin dried with air for 3 to 4 s ; ( C ) Single Bond , an ethanol- and water-based adhesive , applied on moist dentin ; ( D ) Single Bond applied on dentin dried with air for 3 to 4 s. A microfilled composite resin was used for all restorations . RESULTS At 6 months after initial placement , 119 restorations ( a 93 % recall rate ) were re-evaluated . Retention rates at 6 months were 97 % ( one failure ) for Single Bond/moist dentin and 100 % for the remaining three groups ; however , they were not significantly different ( retention rate vs dentin adhesive ; retention rate vs moisture ) . CONCLUSION Dentin substrate in noncarious lesions may be less sensitive to variations in dentin moisture than the " ideal " dentin substrate used under laboratory conditions
RESULTS Comparison of retention of class-V adhesive restorations as a measure to determine clinical bonding effectiveness of adhesives revealed that glass-ionomers most effectively and durably bond to tooth tissue .
Three-step etch- and -rinse adhesives and two-step self-etch adhesives showed a clinical ly reliable and predictably good clinical performance .
The clinical effectiveness of two-step etch- and -rinse adhesives was less favourable , while an inefficient clinical performance was noted for the one-step self-etch adhesives .
SIGNIFICANCE Although there is a tendency towards adhesives with simplified application procedures , simplification so far appears to induce loss of effectiveness .
OBJECTIVES The purpose of this paper was to review current literature on the clinical effectiveness of contemporary adhesives when used to restore cervical non-carious class-V lesions .
Restoration retention in function of time was recorded in order to find out if adhesives with a simplified application procedure are as clinical ly effective as conventional three-step adhesives .