title: [Effects of magnetron sputtered ZrN on the bonding strength of titanium porcelain].
abstract: OBJECTIVE
  To investigate the effect of magnetron sputtered ZrN on the bonding strength between a low-fusing porcelain (Ti/Vita titankeramik system) and commercially pure cast titanium.
  
  
  METHODS
  Sixteen specimens were randomly assigned to test group and control group (n=8). The control group received no surface treated. Magnetron sputtered ZrN film was deposited on the surface of specimens in the test group. Then the sixteen titanium-porcelain specimens were prepared in a rectangular shape and went through three-point bending test on a universal test machine. The bond strength of Ti/porcelain was recorded. The phase composition of the specimens was analyzed using X-ray diffraction (XRD). The interface at titanium and porcelain and the titanium surface after debonding were observed with a scanning electron microscopy (SEM) and analyzed using energy depressive spectrum (EDS).
  
  
  RESULTS
  New phase of ZrN was found with XRD in the test group. Statistical analysis showed higher bond strength following ZrN surface treatment in the test group [(45.991+/-0.648) MPa] than that in the control group [(29.483+/-1.007) MPa] (P=0.000). Bonded ceramic could be observed in test group, the amount of bonded ceramic was more than that in the control group. No obvious bonded ceramic in control group was found.
  
  
  CONCLUSIONS
  Magnetron sputtered ZrN can improve bond strength of Ti/Vita titankeramik system significantly.
authors: Institute of Stomatology, Nanjing Medical University & Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing 210029, China.
authors: Shu
authors: S
authors: Zhou
authors: Wen-yan
authors: WY
authors: Zhang
authors: Han-bing
authors: HB
authors: Guang
authors: Yang
authors: Y
authors: Xia
authors: Fei-min
authors: FM
authors: Zhang
mesh_terms: D003776:Dental Porcelain / Q000737:chemistry*; D003799:Dental Stress Analysis; D008422:Materials Testing; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D003776:Dental Porcelain; D015040:Zirconium; D014025:Titanium