title: [Cr-Ti-Al-N complex coating on titanium to strengthen Ti/porcelain bonding].
abstract: OBJECTIVE
  To study the feasibility of magnetron sputtering Cr-Ti-Al-N complex coating as an interlayer on titanium to enhance the titanium-ceramic binding strength.
  
  
  METHODS
  With a three-point bending test according to ISO 9693, the binding strength of Duceratin (Degussa) to titanium substrate prepared with 4 different surface treatments (polishing, polishing and megnetron sputtering Cr, Ti, Al, and N complex coating, sandblasting, sandblasting and coating) was evaluated. Ti/porcelain interface and fractured Ti surface were examined using scanning electron microscopy with energy-dispersive spectrometry (EDS).
  
  
  RESULTS
  The binding strength of polished and coated titanium/Duceratin was significantly higher than polished titanium group (P<0.05). The binding strength of sandblasted and coated titanium/Duceratin did not differ significantly from that of sandblasted titanium group (P>0.05), and the strength in the two sandblasted titanium groups was significantly higher than that in polished and coated titanium group (P<0.05).
  
  
  CONCLUSIONS
  Megnetron sputtering Cr-Ti-Al-N complex on polished titanium can increase the titanium/porcelain binding strength. Megnetron sputtering coating is a promising Ti/porcelain interlayer.
authors.affiliation: Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an 710032, China. zhanghui@fmmu.edu.cn
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
authors.forename: Tian-wen
authors.initials: TW
authors.lastname: Guo
authors.forename: Jun-ming
authors.initials: JM
authors.lastname: Li
authors.forename: Jing-guang
authors.initials: JG
authors.lastname: Pan
authors.forename: Yong-gang
authors.initials: YG
authors.lastname: Dang
authors.forename: Yu
authors.initials: Y
authors.lastname: Tong
mesh_terms: D000535:Aluminum / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000737:chemistry* / Q000592:standards; D001840:Dental Bonding; D003776:Dental Porcelain / Q000737:chemistry; D003799:Dental Stress Analysis / Q000379:methods; D016876:Metal Ceramic Alloys / Q000737:chemistry* / Q000592:standards; D009584:Nitrogen / Q000737:chemistry; D013499:Surface Properties; D013718:Tensile Strength; D014025:Titanium / Q000737:chemistry*
chemical_list: D020099:Coated Materials, Biocompatible; D016876:Metal Ceramic Alloys; D002857:Chromium; D003776:Dental Porcelain; D000535:Aluminum; D014025:Titanium; D009584:Nitrogen