A comparison of five adhesive systems to primary enamel.
OBJECTIVE
This study compared resin adhesion of five adhesive systems to primary enamel.


METHODS
The labial surfaces of 115 bovine mandibular primary incisors and five different adhesive systems were used. Effects of tooth surface conditioners were observed using SEM. Shear bond strengths were tested, and the test surfaces of enamel and resin specimens were observed using SEM.


RESULTS
All-Etch, 10-3 solution, and K-etchant were effective tooth surface conditioners. In the nonthermocycled groups, the bond strengths of Superbond D Liner, All Bond 2, and Scotchbond Multi Purpose adhesive systems were significantly higher than those of Ketchant/Clearfil Photo Bond, and Clearfil Liner Bond adhesive systems (P < 0.01). However, in the thermocycled groups, no significant difference was obtained among the adhesive systems for bond strength. No correlation was found between the enamel-resin fracture mode and bond strength for any of the adhesive systems.


CONCLUSIONS
We disagree with the theory that the use of the latest developed adhesive resin systems significantly enhance bonding of resin to primary enamel.
Department of Pediatric Dentistry, Nagasaki University School of Dentistry, Japan.
Y
Y
Hosoya
A
A
Tominaga
D000818:Animals; D002417:Cattle; D003188:Composite Resins; D001840:Dental Bonding / Q000706:statistics & numerical data; D003738:Dental Cements / Q000494:pharmacology*; D003743:Dental Enamel / Q000187:drug effects* / Q000648:ultrastructure; D066298:In Vitro Techniques; D007180:Incisor; D008855:Microscopy, Electron, Scanning; D013499:Surface Properties
D003188:Composite Resins; D003738:Dental Cements