Shear-bond-strength of orthodontic brackets to aged nano-hybrid composite-resin surfaces using different surface preparation.
The aim of this study was to evaluate the effects of different surface preparation methods on the shear bond strength (SBS) of orthodontic metal brackets to aged nano-hybrid resin composite surfaces in vitro. A total of 100 restorative composite resin discs, 6 mm in diameter and 3 mm thick, were obtained and treated with an ageing procedure. After ageing, the samples were randomly divided as follows according to surface preparation methods: (1)Control, (2)37% phosphoric acid gel, (3)Sandblasting, (4)Diamond bur, (5)Air-flow and 20 central incisor teeth were used for the control etched group. SBS test were applied on bonded metal brackets to all samples. SBS values and residual adhesives were evaluated. Analysis of variance showed a significant difference (p<0.001) between the groups. Sandblasted group had the highest SBS value (12.85 MPa) in experimental groups. The sandblasting surface treatment is recommended as an effective method of bonding orthodontic metal brackets to nano-hybrid composite resin surfaces.
Department of Orthodontics, Faculty of Dentistry, Selcuk University.
Hatice Kubra
HK
Demirtas
Mehmet
M
Akin
Zehra
Z
Ileri
Faruk Ayhan
FA
Basciftci
D000134:Acid Etching, Dental / Q000379:methods; D020906:Air Abrasion, Dental; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003799:Dental Stress Analysis; D066298:In Vitro Techniques; D008422:Materials Testing; D016910:Orthodontic Brackets; D010756:Phosphoric Acids; D033081:Shear Strength; D013499:Surface Properties
D003188:Composite Resins; C000612973:Filtek Z550; D010756:Phosphoric Acids; C030242:phosphoric acid