Adhesive bonding of resin composite to various titanium surfaces using different metal conditioners and a surface modification system

• Published in: Journal of applied oral science 2013-12, Vol.21 (6), p.590-596
• Main Authors: Almilhatti, Hercules Jorge, Neppelenbroek, Karin Hermana, Vergani, Carlos Eduardo, Machado, Ana Lúcia, Pavarina, Ana Cláudia, Giampaolo, Eunice Teresinha
• Format: Article
• Language: English
• Subjects: Analysis of Variance; Composite resins; Composite Resins - chemistry; Dental alloys; Dental Alloys - chemistry; Dental Bonding - methods; Dental Cements - chemistry; Dental materials; Dental prosthesis; Dental Restoration Failure; Dentistry; DENTISTRY, ORAL SURGERY & MEDICINE; Materials Testing; Methacrylates - chemistry; Microscopy, Electron, Scanning; Original; Phosphoric Acids; Reference Values; Shear Strength - drug effects; Silanes - chemistry; Surface Properties - drug effects; Time Factors; Titanium - chemistry
• ISSN: 1678-7757; 1678-7765; 1678-7765; 1678-7757
• DOI: 10.1590/1679-775720130255

This study evaluated the effect of three metal conditioners on the shear bond strength (SBS) of a prosthetic composite material to cpTi grade I having three surface treatments. One hundred sixty eight rivet-shaped specimens (8.0x2.0 mm) were cast and subjected to polishing (P) or sandblasting with either 50 mm (50SB) or 250 mm (250SB) Al2O3. The metal conditioners Metal Photo Primer (MPP), Cesead II Opaque Primer (OP), Targis Link (TL), and one surface modification system Siloc (S), were applied to the specimen surfaces, which were covered with four 1-mm thick layers of resin composite. The resin layers were exposed to curing light for 90 s separately. Seven specimens from each experimental group were stored in water at 37ºC for 24 h while the other 7 specimens were subjected to 5,000 thermal cycles consisting of water baths at 4ºC and 60ºC (n=7). All specimens were subjected to SBS test (0.5 mm/min) until failure occurred, and further 28 specimens were analyzed using scanning electron microscope (SEM) and X-ray energy-dispersive spectroscopy (EDS). Data were analyzed by 3-way ANOVA followed by post-hoc Tukey's test (α=0.05). On 50SB surfaces, OP groups showed higher SBS means than MPP (P