Effect of alkaline treatment of pure titanium and its alloys on the bonding strength of dental veneering resins.
Commercially pure titanium (cpTi), Ti6Al4V, an experimental beta-type titanium (Ti 53.4 wt%, Nb 29 wt %, Ta 13 wt %, and Zr 4.6 wt %), and 12% AuPdAg alloy plates were sandblasted, cleaned in water, and dried. cpTi plates were treated with nine alkaline treatments that differed in the type of alkali, alkaline concentration, soaking temperature, soaking time, and heating temperature. cpTi plates that were only sandblasted or sandblasted and oxidized at 600 degrees C for 1 h in air were also prepared. Finally, the bonding strengths of 11 kinds of surface-treated cpTi to resin were measured using a pull-shear bonding method after immersion in physiologic saline solution at 37 degrees C for 24 h. The bonds of the standard alkaline-treated cpTi and two titanium alloys to resins were 1.5-1.9 times stronger than those of sandblasted specimens (p < 0.01), but no significant effects of the alkaline treatment were observed on the 12% AuPdAg alloy. The greatest bonding strengths were found for cpTi treated with NaOH and KOH and then heated at 600 degrees C (p < 0.01). In conclusion, alkaline treatment is a simple, effective surface modification of titanium that improves bonding to veneering resin.
Ban
Seiji
S
Division of Biomaterials Science, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan. sban@denta.hal.kagoshima-u.ac.jp
D000497:Alloys; D003188:Composite Resins / Q000737:chemistry; D003722:Dental Alloys / Q000737:chemistry*; D003801:Dental Veneers; D006863:Hydrogen-Ion Concentration; D006878:Hydroxides / Q000494:pharmacology; D018020:Lithium Compounds / Q000494:pharmacology; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D009556:Niobium; D010084:Oxidation-Reduction; D016062:Porosity; D017680:Potassium Compounds / Q000494:pharmacology; D033081:Shear Strength; D012972:Sodium Hydroxide / Q000494:pharmacology; D013048:Specimen Handling; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013635:Tantalum; D013696:Temperature; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction; D015040:Zirconium
D000497:Alloys; C477623:AuPdAg alloy; D003188:Composite Resins; D003722:Dental Alloys; D006878:Hydroxides; D018020:Lithium Compounds; D017680:Potassium Compounds; C113676:Solidex; C481486:Ti-29Nb-13Ta-4.6Zr alloy; D009556:Niobium; C031462:titanium alloy (TiAl6V4); D012972:Sodium Hydroxide; D013635:Tantalum; D015040:Zirconium; D014025:Titanium; C028467:lithium hydroxide; C029943:potassium hydroxide