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Published on: May 17, 2020
Shear and tensile bond strength comparison of various contemporary orthodontic adhesive systems: an in-vitro study
Claudia A Reicheneder1, Tomas Gedrange, Alexandra Lange
1Department of Orthodontics, Regensburg University Medical Center, Regensburg, Germany. claudia.reicheneder@gmx.net
Introduction:
The purpose of this study was to compare the shear and tensile bond strengths of 8 common adhesive systems for bonding in orthodontics.
Methods:
One hundred sixty freshly extracted bovine mandibular permanent incisors were randomly divided into 8 groups. Self-ligating esthetic Damon 3 brackets (Ormco, Orange, Calif) were bonded by using the following adhesive systems: Quick Bond (chemically and light-cured; Forestadent, Pforzheim, Germany), Blugloo (Ormco), Enlight LV (Ormco), Kurasper F (Kuraray Dental, Frankfurt, Germany), Transbond LR (3 M Unitek, Monrovia, Calif), Light Bond (Reliance Orthodontic Products, Itasca, Ill), and Fuji Ortho LC (GC America, Alsip, Ill). After 24 hours, half of each group was debonded measuring the shear bond strength and half measuring the tensile bond strength.
Results:
Blugloo showed the best shear bond strength values, whereas Transbond LR and Quick Bond (chemically and light-cured) had the lowest. Tensile strength was the highest with Fuji Ortho LC and the lowest with Quick Bond (chemically and light-cured) and Kurasper F. The tensile strength of light-cured Quick Bond was about 47% lower than that of Fuji Ortho LC.
Conclusions:
Blugloo, Fuji Ortho LC, Light Bond, and Enlight LV are among the materials of choice for bonding fixed orthodontic appliances to teeth. All bond strength values were clinically satisfactory except for the tensile strength of chemically and light-cured Quick Bond and Kurasper F.
