Adhesive bond of veneering composites on various metal surfaces using silicoating, titanium-coating or functional monomers.
OBJECTIVE
This study compared the shear bond strength (SBS) between veneering composites and titanium (grade 1), a cobalt-chromium-alloy and a high precious-alloy, which were pretreated using silicoating systems, functional monomers or an experimental titanium-dioxide coating system.


METHODS
The specimens were sized to rectangular plates of 20 x10 x 2mm(3) (l,w,h) and a composite cylinder (height of 4mm, diameter 5mm) was axially polymerized to the middle of the plates. After aging (24h or 150 d storage in distilled water at 37 degrees C, or thermal-cycling: 6000 x 5 degrees /55 degrees C) the SBS was determined.


RESULTS
Independent of the type of metal and the conditioning/coating techniques the lowest SBSs were found after thermal-cycling. Titanium. The SBS of the silica coating systems and the functional monomers did not differ statistically on titanium. However, the titanium-dioxide coating method had significantly higher values than the other methods. Cobalt-chromium. The highest mean values were observed with the titanium-dioxide coating system and the phosphate acid ester. Precious alloy. No statistical significant different SBS was found for the silicoating and the titanium-dioxide coating methods, while the functional monomers were statistically significant (lower) different to both systems.


CONCLUSIONS
Generally, the titanium-dioxide coating system achieved the highest SBS under different aging conditions and on all three different metal-surfaces.
Behr
Michael
M
Department of Prosthodontics, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany. michael.behr@klinik.uni-regensburg.de
Rosentritt
Martin
M
Gröger
Gerhard
G
Handel
Gerhard
G
D000269:Adhesives / Q000737:chemistry; D002858:Chromium Alloys / Q000737:chemistry; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D003722:Dental Alloys / Q000737:chemistry*; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry; D045662:Dental Etching / Q000379:methods; D003764:Dental Materials / Q000737:chemistry*; D003801:Dental Veneers; D005899:Glass Ionomer Cements / Q000737:chemistry; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D010755:Organophosphates / Q000737:chemistry; D010710:Phosphates / Q000737:chemistry; D033081:Shear Strength; D012823:Silicate Cement / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D013314:Stress, Mechanical; D013696:Temperature; D013997:Time Factors; D014025:Titanium / Q000737:chemistry; D014867:Water / Q000737:chemistry
D000269:Adhesives; D002858:Chromium Alloys; D020099:Coated Materials, Biocompatible; D003188:Composite Resins; D003722:Dental Alloys; D003738:Dental Cements; D003764:Dental Materials; D005899:Glass Ionomer Cements; D006047:Gold Alloys; D008689:Methacrylates; D010755:Organophosphates; D010710:Phosphates; C076811:Rocatec; C113676:Solidex; C111282:dental polyglass; C083619:thermoresin LC; D014867:Water; D012823:Silicate Cement; C009495:titanium dioxide; C100646:Metal Primer; D012822:Silicon Dioxide; D014025:Titanium; C035638:thiophosphoric acid