[Cr-Ti-Al-N complex coating on titanium to strengthen Ti/porcelain bonding].
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.
Zhang
Hui
H
Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an 710032, China. zhanghui@fmmu.edu.cn
Guo
Tian-wen
TW
Li
Jun-ming
JM
Pan
Jing-guang
JG
Dang
Yong-gang
YG
Tong
Yu
Y
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*
D020099:Coated Materials, Biocompatible; D016876:Metal Ceramic Alloys; D002857:Chromium; D003776:Dental Porcelain; D000535:Aluminum; D014025:Titanium; D009584:Nitrogen