title: [Effect of surface modified nano-diamond on viscosity of dental adhesives].
abstract: OBJECTIVE
  Different surface modified ultrafine-diamond (UFD) was added into dental adhesives as filler ,then the influence of dental adhesive properties was observed. The main matrix of dental adhesive was high polymer resin.
  
  
  METHODS
  Different content of non-modified UFD(n-UFD) or modified UFD(m-UFD) were added into dental adhesives, then the viscosity of materials were measured. The data was processed with SPSS17.0 software package.
  
  
  RESULTS
  The viscosity of dental adhesives was decreased when the proportion of UFD was less than 0.1wt%, especially when it was 0.1wt%; but was significantly improved when the proportion was more than 0.1wt%. The effect of UFD and surface-modified UFD on the viscosity was significantly different.
  
  
  CONCLUSIONS
  The results show that silane coupling was chemically-grafted on the surface of UFD, the dispersion and stability of UFD in ethanol was improved; And a quantity of UFD with special content could reduce the viscosity of dental adhesives and improve the flowability obviously. The m-UFD was superior to n-UFD.
authors.affiliation: Department of Stomatology, Shenzhen Hospital, Beijing University, Guangdong Province, China. luojuan0048@sina.com
authors.forename: Juan
authors.initials: J
authors.lastname: Luo
authors.forename: Jie
authors.initials: J
authors.lastname: Liang
authors.forename: Ai-yun
authors.initials: AY
authors.lastname: Hu
authors.forename: Xue-heng
authors.initials: XH
authors.lastname: Liu
mesh_terms: D001840:Dental Bonding; D003738:Dental Cements; D018130:Diamond; D008422:Materials Testing; D019279:Resin Cements; D014783:Viscosity
chemical_list: D003738:Dental Cements; D019279:Resin Cements; D018130:Diamond