title: Optimum concentration and application time of 1,6-hexanediol as a dentin primer.
abstract: 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.
authors.affiliation: Department of Operative Dentistry, Showa University, School of Dentistry, Tokyo, Japan.
authors.forename: M A
authors.initials: MA
authors.lastname: Rahman
authors.forename: C
authors.initials: C
authors.lastname: Tani
authors.forename: K
authors.initials: K
authors.lastname: Itoh
authors.forename: S
authors.initials: S
authors.lastname: Wakumoto
authors.forename: H
authors.initials: H
authors.lastname: Hisamitsu
mesh_terms: 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
chemical_list: 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