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Effect of alkaline treatment of pure titanium and its alloys on the bonding strength of dental veneering resins
Author(s) -
Ban Seiji
Publication year - 2003
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.10566
Subject(s) - materials science , titanium , alkali metal , titanium alloy , alloy , composite material , bond strength , metallurgy , nuclear chemistry , adhesive , chemistry , layer (electronics) , organic chemistry
Commercially pure titanium (cpTi), Ti6Al4V, an experimental β‐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°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°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°C ( p < 0.01). In conclusion, alkaline treatment is a simple, effective surface modification of titanium that improves bonding to veneering resin. © 2003 Wiley Periodicals, Inc. J Biomed Mater Res 66A: 138–145, 2003