Influence of Surface Treatments on Adhesion of Porcelain to Titanium

• Published in: Journal of prosthodontics Vol. 22; no. 6; pp. 465 - 471
• Main Author: Elsaka, Shaymaa E.
• Format: Journal Article
• Language: English
• Published: United States Blackwell Publishing Ltd 01.08.2013; Wiley Subscription Services, Inc
• Subjects: Acid Etching, Dental - methods; Aluminum Oxide - chemistry; Bond strength; cp Ti; Dental Bonding; Dental Etching - methods; Dental Materials - chemistry; Dental Polishing - methods; Dental Porcelain - chemistry; Dentistry; Etching; Humans; Hydrochloric Acid - chemistry; Materials Testing; Microscopy, Atomic Force; Microscopy, Electron, Scanning; Pliability; Porcelain; pretreatment; Scanning electron microscopy; strain energy release rate; Stress, Mechanical; Surface Properties; surface roughness; Time Factors; Titanium - chemistry; veneering porcelain; Bond strength; strain energy release rate; veneering porcelain; pretreatment; cp Ti; surface roughness
• ISSN: 1059-941X; 1532-849X
• DOI: 10.1111/jopr.12023

Purpose This study evaluated the effect of etching solution surface treatments on the surface characteristics of titanium and adhesion of titanium/porcelain system by means of strain energy release rate (G‐value, J/m2). Materials and Methods Two hundred and forty five specimens of cp Ti plates were prepared. The specimens were divided into five groups in each test according to the surface treatment used; Gr MC (machined control), Gr AP (airborne particle abrasion), Gr E15, Gr E30, and Gr E60 (etching solution applied for 15, 30, and 60 minutes, respectively). The treated surfaces were characterized by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Three types of porcelains (Duceratin, Vita Titankeramik, Ti‐22) were used to test adhesion with cp Ti. Following the four‐point bending interfacial fracture test, the peeled fracture surfaces were examined using SEM. Data were analyzed using ANOVA and Tukey HSD test. Statistical significance was set at the 0.05 probability level. Results AFM and SEM analyses showed that the surface topography of cp Ti was modified after treatments. Bond strength values were significantly affected by surface treatment and by type of porcelain (p < 0.05). The cp Ti/Duceratin (E30 and E60 minutes) groups showed the highest G‐value among the groups. Modes of failure were mixed and interfacial adhesive. Conclusions Adhesion between cp Ti and porcelain could be enhanced by the use of experimental hot etching solution prior to porcelain firing as an alternative modality to the airborne‐particle abrasion method.