title: Shear bond strength of a new low-shrinkage flowable composite for orthodontic bracket bonding.
abstract: OBJECTIVE
  The purpose of this study was to determine the shear bond strength (SBS) and adhesive remnant index (ARI) value a new generation low-shrinkage flowable composite compared to a conventional bonding adhesive and several flowable composites.
  
  
  METHODS
  One hundred and fifty sound human premolars extracted for orthodontic treatment were randomly divided into five groups of 30 teeth each. Brackets were bonded to the teeth in each group with a conventional bonding composite, three flowable composites, and a new generation flowable composite. SBS values of these brackets were recorded via an Instron testing machine. ARI scores were determined after the failure of brackets.
  
  
  RESULTS
  There was a statistically significant difference between flowable composites (P<.01). The mean bond strength for the conventional bonding composite group was significantly greater than that of each of the other four groups (P<.001). There were significant differences (chi-square=29.02; P=.00) among the groups.
  
  
  CONCLUSIONS
  The demineralization and microleakage-inhibiting effects and simple application of the new low polymerization shrinking flowable composite indicate that it might be considered for clinical use in orthodontic patients, especially those with inadequate oral hygiene.
authors.affiliation: Department of Pediatric Dentistry, School of Dentistry, Erciyes University, Kayseri, Turkey. k_cantekin@hotmail.com.
authors.forename: Kenan
authors.initials: K
authors.lastname: Cantekin
authors.affiliation: Department of Orthodontics, School of Dentistry, Erciyes University, Kayseri, Turkey.
authors.forename: Suleyman Kutalmis
authors.initials: SK
authors.lastname: Buyuk
mesh_terms: D000134:Acid Etching, Dental; D001641:Bicuspid; D003188:Composite Resins / Q000494:pharmacology*; D001840:Dental Bonding / Q000379:methods*; D003763:Dental Leakage / Q000517:prevention & control; D003799:Dental Stress Analysis; D006801:Humans; D066298:In Vitro Techniques; D055115:Light-Curing of Dental Adhesives; D008422:Materials Testing; D016910:Orthodontic Brackets; D011897:Random Allocation; D019279:Resin Cements / Q000494:pharmacology; D033081:Shear Strength; D013499:Surface Properties; D017001:Tooth Demineralization / Q000517:prevention & control
chemical_list: D003188:Composite Resins; C467913:Filtek Flow; C509998:Grandio; D019279:Resin Cements; C553871:Surefil SDR Flow; C477790:Transbond XT; C111840:flowable hybrid composite; C452226:tetric flow composite resin