title: Comparison of shear bond strengths of orthodontic brackets bonded with flowable composites.
abstract: This study evaluated the shear bond strengths of orthodontic brackets bonded to human premolars using five different combinations of flowable composites and one-step self-etching adhesives (n=12): (1) Adper Easy Bond+Filtek Supreme XT Flow; (2) Futurabond NR+Grandio Flow; (3) Clearfil S3 Bond+Clearfil Majesty Flow; (4) AdheSE One+Tetric EvoFlow; and (5) Transbond Plus Self Etching Primer+Transbond XT Light Cure Adhesive. After shear bond strength testing, adhesive remnant index (ARI) scores were given according to the amount of adhesive and resin remaining on the brackets. On shear bond strength, there were no statistically significant differences between Groups 2 and 4 and between Groups 3 and 5 (p>0.05). On ARI scores, the predominant ARI scores in Groups 1, 2, 3, and 5 were 4, 2, 5, and 4 respectively; in Group 4, they were 0 and 4. Results showed that some combinations of flowable composites and self-etching adhesives might not be suitable for orthodontic use due to their low shear bond strengths and high ARI scores -with the latter signaling the risk of damaging the enamel surface during debonding.
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Hacettepe University 06100, Altindag, Ankara, Turkey. melekturgut@yahoo.com
authors.forename: Melek D
authors.initials: MD
authors.lastname: Turgut
authors.forename: Nuray
authors.initials: N
authors.lastname: Attar
authors.forename: Yonca
authors.initials: Y
authors.lastname: Korkmaz
authors.forename: Aylin
authors.initials: A
authors.lastname: Gokcelik
mesh_terms: D003188:Composite Resins / Q000737:chemistry* / Q000494:pharmacology; D003738:Dental Cements / Q000737:chemistry* / Q000494:pharmacology; D017005:Dental Debonding; D003743:Dental Enamel / Q000737:chemistry / Q000187:drug effects; D045662:Dental Etching / Q000379:methods*; D003799:Dental Stress Analysis; D006801:Humans; D016910:Orthodontic Brackets; D033081:Shear Strength; D014783:Viscosity
chemical_list: D003188:Composite Resins; D003738:Dental Cements