title: Effect of surface treatment on bond strength of Ti-10Ta-10Nb to low-fusing porcelain.
abstract: BACKGROUND
  Ti-10Ta-10Nb alloy is a promising alloy for metal ceramic crowns because of its good corrosion resistance and low cytotoxicity. However, more information is needed on the bond strength between this alloy and porcelain.
  
  
  OBJECTIVE
  The purpose of this study was to compare the surface morphology, surface roughness, and bond strength of a Ti-10Ta-10Nb alloy, pure Ti, and a Ti-6Al-4V alloy.
  
  
  METHODS
  Ti-10Ta-10Nb, pure Ti, and Ti-6Al-4V specimens (25 × 3 × 0.55 mm plate) were prepared and then divided into 6 groups (n=8) according to surface treatment. Group P (control group) was polished with SiC paper. Groups S50 and S250 were airborne-particle abraded with 50 μm and 250 μm aluminum oxide powder. Group HCl was immersed in 10% HCl aqueous solution, and Group HF was immersed in 17% HNO(3)/HF solution. Group TiN was coated with TiN. Atomic force microscopy was used to observe the surface roughness of the metal surface. Scanning electron microscopy was used to analyze the surface profile. A 3-point bending test was performed to evaluate the bond strength. Two-way analysis of variance (ANOVA) was performed to compare the roughness and bond strength and statistical differences were revealed by the Bonferroni post hoc test (α=.05).
  
  
  RESULTS
  There were significant differences in the surface roughness, surface profile, and bond strength of the Ti alloys according to the surface treatments. The groups with the higher mean surface roughness showed higher bond strength, but surface profile had a larger effect on the bond strength than surface roughness. Moreover, the bond strength of the Ti-10Ta-10Nb alloy was high.
  
  
  CONCLUSIONS
  Ti-10Ta-10Nb would be more suitable for a metal ceramic crown than pure Ti or Ti-6Al-4V, which have limited use because of their low bond strength to porcelain.
authors: Department of Periodontology, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwang-ju, Korea.
authors: Bo-Ah
authors: BA
authors: Lee
authors: Ok-Su
authors: OS
authors: Kim
authors: Mong-Sook
authors: MS
authors: Vang
authors: Yeong-Joon
authors: YJ
authors: Park
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D000497:Alloys; D000537:Aluminum Oxide / Q000737:chemistry; D017554:Carbon Compounds, Inorganic / Q000737:chemistry; D003722:Dental Alloys / Q000737:chemistry; D001840:Dental Bonding; D045662:Dental Etching / Q000379:methods; D003764:Dental Materials / Q000737:chemistry; D003775:Dental Polishing / Q000379:methods; D003776:Dental Porcelain / Q000737:chemistry*; D003799:Dental Stress Analysis / Q000295:instrumentation; D055119:Elastic Modulus; D006358:Hot Temperature; D006801:Humans; D006851:Hydrochloric Acid / Q000737:chemistry; D006858:Hydrofluoric Acid / Q000737:chemistry; D008422:Materials Testing; D016876:Metal Ceramic Alloys / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D009556:Niobium / Q000737:chemistry; D017942:Nitric Acid / Q000737:chemistry; D018583:Pliability; D017655:Silicon Compounds / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013635:Tantalum / Q000737:chemistry; D013997:Time Factors; D014025:Titanium / Q000737:chemistry*
chemical_list: D000497:Alloys; D017554:Carbon Compounds, Inorganic; D003722:Dental Alloys; D003764:Dental Materials; D016876:Metal Ceramic Alloys; D017655:Silicon Compounds; D009556:Niobium; D003776:Dental Porcelain; C031462:titanium alloy (TiAl6V4); D017942:Nitric Acid; D013635:Tantalum; C041500:titanium nitride; D014025:Titanium; D000537:Aluminum Oxide; D006851:Hydrochloric Acid; D006858:Hydrofluoric Acid; C022088:silicon carbide