Comparison in shear bond strength of orthodontic brackets between five bonding systems related to different etching times: an in vitro study.
New adhesives are continuously being marketed. The adhesive-bracket bond is still the weakest point in orthodontic bonding. A new device for the measurement of shear bond strength values (SBS) of orthodontic brackets is presented in this article. With this device, five commercial products were evaluated for their SBS: Lee Bond (LB), Concise (C), Super C (SC), Achieve-no-mix (ANM), and Panavia Ex (PE). After applying Begg brackets of laminated minimesh on lower human incisors, the specimens were thermocycled. The products investigated produced high bond strengths. The products tested showed shear bond strengths that were significantly lower than those stained with PE. The application of PE yielded the highest shear values. Nevertheless, some characteristics of this product might be clinically somewhat inconvenient. There was no significant difference in shear bond strength between 15 and 60 seconds enamel etching before bond application.
Surmont
P
P
Department of Restorative Dentistry, Dental School, State University of Gent, Belgium.
Dermaut
L
L
Martens
L
L
Moors
M
M
D000134:Acid Etching, Dental / Q000379:methods*; D000180:Acrylic Resins / Q000737:chemistry; D000268:Adhesiveness; D017438:Bisphenol A-Glycidyl Methacrylate; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry*; D003743:Dental Enamel / Q000648:ultrastructure; D003799:Dental Stress Analysis; D006801:Humans; D008422:Materials Testing; D016910:Orthodontic Brackets; D010710:Phosphates / Q000737:chemistry; D019279:Resin Cements; D012117:Resins, Synthetic / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength; D013997:Time Factors
C072675:Achieve no-mix; D000180:Acrylic Resins; D003188:Composite Resins; D003738:Dental Cements; D010710:Phosphates; D019279:Resin Cements; D012117:Resins, Synthetic; C074577:Lee Bond; D017438:Bisphenol A-Glycidyl Methacrylate; C040201:Super C resin; C052304:Panavia EX