Optimum concentration and application time of 1,6-hexanediol as a dentin primer.
The optimum concentration and application time for an experimental dentin primer composed of an aqueous solution of 1,6-hexanediol were determined by measuring the wall-to-wall polymerization contraction gap width of a commercial light-activated resin composite in a cylindrical dentin cavity prepared in an extracted human molar. Contraction gap formation was completely prevented only when the dentin cavity wall was primed with 45 wt% 1,6-hexanediol for 60 s. There were no significant differences in tensile bond strength among primers composed of 20.0-57.5 wt% 1,6-hexanediol. These results suggest that the optimum concentration and application time are 45 wt% and 60 s, respectively.
Rahman
M A
MA
Department of Operative Dentistry, Showa University, School of Dentistry, Tokyo, Japan.
Tani
C
C
Itoh
K
K
Wakumoto
S
S
Hisamitsu
H
H
D000704:Analysis of Variance; D003188:Composite Resins; D001840:Dental Bonding; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000379:methods*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D004492:Edetic Acid; D006018:Glycols / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D019279:Resin Cements; D013718:Tensile Strength; D013997:Time Factors
D003188:Composite Resins; D017220:Dentin-Bonding Agents; D006018:Glycols; D019279:Resin Cements; C074669:Clearfil Photo Bond; C074741:Silux Plus; D004492:Edetic Acid; C027765:hexamethylene glycol