title: [The antibacterial properties of Ca and Zn-containing coatings prepared with micro-arc oxidation].
abstract: OBJECTIVE
  To prepare Ca and Zn-containing coatings using micro-arc oxidation on pure titanium surface and to investigate the coatings effect on S.mutans adhesion and morphology.
  
  
  METHODS
  Five groups including low Ca-containing (L-Ca), high Ca-containing (H-Ca), low Zn-containing (L-Zn), medium Zn-containing (M-Zn), high Zn-containing (H-Zn) were prepared with micro-arc oxidation on titanium surface and machined commercial pure titanium (CP) was used as control group. Antibacterial properties of S.mutans on samples surface were appraised by the paster method and the change of bacteria was observed by SEM. SPSS 13.0 software package was used for all statistical analysis.
  
  
  RESULTS
  The results showed that L-Ca and H-Ca groups had no significant difference in antibacterial property(P>0.05);Zn-containing groups had distinct antibacterial effect(P<0.01) compared with CP group,and there was significant difference between L-Zn and H-Zn group (P<0.05). Meanwhile,Zn-containing groups could affect adhesion and morphology of S.mutans by SEM.
  
  
  CONCLUSIONS
  Zn-containing coating prepared with micro-arc oxidation can effectively influence S.mutans adhesion and morphology, which shows better antibacterial effect with the increase of zinc content.
authors.affiliation: Center of Implant Dentistry, School of Stomatology, China Medical University, Shenyang 110002, Liaoning Province, China. zhao_baohong@vip.sohu.com
authors.forename: Bao-hong
authors.initials: BH
authors.lastname: Zhao
authors.forename: Wei
authors.initials: W
authors.lastname: Feng
authors.forename: De-hao
authors.initials: DH
authors.lastname: Shang
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Ke-qin
authors.initials: KQ
authors.lastname: DU
authors.forename: Ming
authors.initials: M
authors.lastname: Zhong
mesh_terms: D000900:Anti-Bacterial Agents; D020099:Coated Materials, Biocompatible; D006801:Humans; D010084:Oxidation-Reduction; D013499:Surface Properties; D014025:Titanium; D015032:Zinc
chemical_list: D000900:Anti-Bacterial Agents; D020099:Coated Materials, Biocompatible; D014025:Titanium; D015032:Zinc