title: [Effect of amount of silane coupling agent on flexural strength of dental composite resins reinforced with aluminium borate whisker].
abstract: OBJECTIVE
  To evaluate the effect of amount of silane coupling agent on flexural strength of dental composite resins reinforced with aluminium borate whisker (ABW).
  
  
  METHODS
  ABW was surface-treated with 0%, 1%, 2%, 3% and 4% silan coupling agent (γ-MPS), and mixed with resin matrix to synthesize 5 groups of composite resins. After heat-cured at 120 degrees centigrade for 1 h, specimens were tested in three-point flexure to measure strength according to ISO-4049. One specimen was selected randomly from each group and observed under scanning electron microscope (SEM). The data was analyzed with SAS 9.2 software package.
  
  
  RESULTS
  The flexural strength (117.93±11.9 Mpa) of the group treated with 2% silane coupling agent was the highest, and significantly different from that of the other 4 groups (α=0.01).
  
  
  CONCLUSIONS
  The amount of silane coupling agent has impact on the flexural strength of dental composite resins reinforced with whiskers; The flexual strength will be reduced whenever the amount is higher or lower than the threshold. Supported by Research Fund of Science and Technology Committee of Shanghai Municipality (08DZ2271100).
authors.affiliation: Department of General Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; Shanghai Key Laboratory of Stomatology. Shanghai 200011, China.E-mail:richael_smilefm@163.com.
authors.forename: Ming-yi
authors.initials: MY
authors.lastname: Zhu
authors.forename: Xiu-yin
authors.initials: XY
authors.lastname: Zhang
mesh_terms: D000180:Acrylic Resins; D000535:Aluminum; D001881:Borates; D003188:Composite Resins; D011140:Polyurethanes; D012821:Silanes; D013499:Surface Properties
chemical_list: D000180:Acrylic Resins; D001881:Borates; C029012:Composite Dental Resin; D003188:Composite Resins; D011140:Polyurethanes; D012821:Silanes; D000535:Aluminum