A new multipurpose dental adhesive for orthodontic use: an in vitro bond-strength study.
The purpose of this study was to evaluate the compatibility of a new dental adhesive, High-Q-Bond (HQB) adhesive, for the bonding of orthodontic brackets by determining its bond strength and the mode of bond failure after debonding. Eighty extracted human premolars were divided into 4 groups, 20 in each group. In groups 1 and 2, stainless steel brackets were bonded to etched enamel with HQB and Right-On adhesives respectively. In groups 3 and 4, the same adhesives were used to bond stainless-steel brackets to roughened, old amalgam restorations prepared in the teeth. After 72 hours of incubation in saline solution at 37 degrees C, debonding was performed with a shearing force. The force at bond failure was recorded, and the mode of bond failure was examined. Results showed that when bonding to enamel, both the HQB and the Right-On material achieved adequate bond strength, and no significant difference was found between the two. However, after debonding, the HQB material left no adhesive on the enamel, whereas the Right-On material left significant amounts of adhesive on the enamel. When bonding to amalgam, the HQB material had a significantly higher shear bond strength than did the Right-On adhesive. It is suggested that HQB can be applied for orthodontic use, but further clinical studies are required to evaluate its efficacy.
Harari
D
D
Department of Orthodontics, Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel.
Aunni
E
E
Gillis
I
I
Redlich
M
M
D003723:Dental Amalgam; D001840:Dental Bonding / Q000379:methods*; D017005:Dental Debonding; D003743:Dental Enamel; D017220:Dentin-Bonding Agents; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates; D016910:Orthodontic Brackets; D019279:Resin Cements; D013193:Stainless Steel; D013499:Surface Properties; D013718:Tensile Strength
D017220:Dentin-Bonding Agents; C103360:High-Q-Bond; D008689:Methacrylates; D019279:Resin Cements; C071164:Right-On cement; D013193:Stainless Steel; D003723:Dental Amalgam