TY - JOUR
T1 - Effect acidic and alkaline/heat treatments on the bond strength of different luting cements to commercially pure titanium
AU - Fawzy, Amr S
AU - El-Askary, Farid S
PY - 2009/4
Y1 - 2009/4
N2 - OBJECTIVE: The purpose of this study was to characterize the effects of either acidic or combined alkaline/heat treatments on the surface of grit-blasted commercially pure (cp) titanium. The effects of the previous treatments on the shear bond strength (SBS) of cp titanium to conventional glass ionomer, resin-reinforced glass ionomer and self-adhesive resin luting cements were evaluated.METHODS: Titanium discs were machined and received one of the following treatments; grit-blasting (GB), grit-blasting followed either by etching in HNO(3)/HF solution (GB/Ac) or by combined 5M NaOH treatment/heat treatment at 600 degrees C for 1h, then immersed for 24h in SBF solution before cementation (GB/Ak). The treated surfaces were characterized by atomic force microscope (AFM), scanning electron microscope (SEM) and laser-induced brake-down spectroscopy (LIBS). Discs were cemented either by Fuji I, Fuji Plus or Rely X Unicem luting cements. The SBS was evaluated and the debonded discs were investigated by SEM.RESULTS: Two prominent results were revealed; first, GB/Ak treatment showed the highest SBS than the other treatments (P<0.0001). Second, Rely X Unicem showed the highest SBS than the other cements (P<0.0001). Fuji I and Fuji Plus showed predominant cohesive type of failure, whereas Rely X showed predominant adhesive type of failure.SIGNIFICANCE: Combined alkaline/heat treatments of commercially pure titanium surface shows to be of beneficial effect in enhancing SBS to glass ionomer, resin-modified glass ionomer and adhesive resin luting cements.
AB - OBJECTIVE: The purpose of this study was to characterize the effects of either acidic or combined alkaline/heat treatments on the surface of grit-blasted commercially pure (cp) titanium. The effects of the previous treatments on the shear bond strength (SBS) of cp titanium to conventional glass ionomer, resin-reinforced glass ionomer and self-adhesive resin luting cements were evaluated.METHODS: Titanium discs were machined and received one of the following treatments; grit-blasting (GB), grit-blasting followed either by etching in HNO(3)/HF solution (GB/Ac) or by combined 5M NaOH treatment/heat treatment at 600 degrees C for 1h, then immersed for 24h in SBF solution before cementation (GB/Ak). The treated surfaces were characterized by atomic force microscope (AFM), scanning electron microscope (SEM) and laser-induced brake-down spectroscopy (LIBS). Discs were cemented either by Fuji I, Fuji Plus or Rely X Unicem luting cements. The SBS was evaluated and the debonded discs were investigated by SEM.RESULTS: Two prominent results were revealed; first, GB/Ak treatment showed the highest SBS than the other treatments (P<0.0001). Second, Rely X Unicem showed the highest SBS than the other cements (P<0.0001). Fuji I and Fuji Plus showed predominant cohesive type of failure, whereas Rely X showed predominant adhesive type of failure.SIGNIFICANCE: Combined alkaline/heat treatments of commercially pure titanium surface shows to be of beneficial effect in enhancing SBS to glass ionomer, resin-modified glass ionomer and adhesive resin luting cements.
KW - Analysis of Variance
KW - Dental Bonding/methods
KW - Dental Cements/chemistry
KW - Dental Etching/methods
KW - Dental Stress Analysis
KW - Dentin-Bonding Agents/chemistry
KW - Glass Ionomer Cements/chemistry
KW - Resin Cements/chemistry
KW - Shear Strength
KW - Statistics, Nonparametric
KW - Surface Properties
KW - Titanium/chemistry
U2 - 10.1016/j.jdent.2008.11.021
DO - 10.1016/j.jdent.2008.11.021
M3 - Article
C2 - 19167146
VL - 37
SP - 255
EP - 263
JO - Journal of Dentistry
JF - Journal of Dentistry
SN - 0300-5712
IS - 4
ER -