title: Microtensile bond strength of self-etch adhesives in different surface conditionings.
abstract: OBJECTIVE
  Self-etch bonding systems have been introduced recently and have the advantage of reduced operating time.  Because of patient management and isolation difficulties in children, the present study aimed to evaluate microtensile bond  strength of two self-etch  bonding systems (AdheSE and Xeno® III) on  cleaned only, ground and sandblasted enamel.
  
  
  METHODS
  Thirty intact primary molars were selected and  randomly divided into  two groups according to  the type of  bonding used (Xeno® III and AdheSE). The teeth were divided into three subgroups according to enamel  surface conditioning method: prophylaxis with pumice, grinding with coarse finishing and polishing disc,  and sandblasting  with aluminum oxide particles. Tetric Ceram composite then was applied. Samples were sectioned coronally and axially. The  interface area of dental sticks was measured and specimens were subjected to a tensile force of 0.5 mm/min until failure.
  
  
  RESULTS
  Microtensile bond strength of Xeno® III-sandblasting, AdheSE-sandblasting, AdheSE-grinding, and AdheSE- cleaned only were 25.5±7.7, 21.2±2.3, 12.9±2.2, and 9.1±1.1, respectively. During sectioning,  all specimens of Xeno® III-cleaned only and Xeno® III-grinding groups were fractured.
  
  
  CONCLUSIONS
  Two step  AdheSE yields higher mTBS in comparison to one step Xeno ® III. In regard to surface conditioning, sandblasting  increases the mTBS relative to  grinding with finishing and polishing disc, and the  cleaned-only enamel has the lowest  mTBS.
authors.affiliation: Faculty of Dentistry, Tabriz University of Medical Sciences, Iran. ay_sohrabi@yahoo.com
authors.forename: A
authors.initials: A
authors.lastname: Sohrabi
authors.forename: M
authors.initials: M
authors.lastname: Amini
authors.forename: B M
authors.initials: BM
authors.lastname: Afzali
authors.forename: A
authors.initials: A
authors.lastname: Ghasemi
authors.forename: A
authors.initials: A
authors.lastname: Sohrabi
authors.forename: S M
authors.initials: SM
authors.lastname: Vahidpakdel
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D000180:Acrylic Resins / Q000737:chemistry; D000268:Adhesiveness; D000537:Aluminum Oxide / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003743:Dental Enamel / Q000648:ultrastructure*; D045662:Dental Etching / Q000379:methods; D003764:Dental Materials / Q000737:chemistry; D003777:Dental Prophylaxis / Q000295:instrumentation / Q000379:methods; D003799:Dental Stress Analysis / Q000295:instrumentation; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D019279:Resin Cements / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength; D014094:Tooth, Deciduous / Q000648:ultrastructure*
chemical_list: D000180:Acrylic Resins; C489662:AdheSE cement; D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D019279:Resin Cements; D017640:Silicates; C121818:Tetric ceram; C487957:Xeno III; D000537:Aluminum Oxide; C005144:pumice