Journal of AdvancedMedical and Dental Sciences Research

Background: Metal-ceramic restorations are still commonly used for reconstruction of tooth crowns, but patient demands for more esthetic and durable restorations led to the fabrication of all-ceramic restorations. Advances were made in the fabrication of these restorations following the introduction of novel materials and techniques. Surface treatment increases the surface roughness to obtain mechanical interlocking and chemically activates the surface to obtain a chemically strong bond. Aim of the study: To study the role of sandblasting on fracture load of titanium ceramic crowns. Materials and methods: For the study, a mandibular first premolar was carved on inlay wax with dimensions 8.5 mm cervicocclussaly, 7.0 mm mesiodistally and 7.5 mm labiolingually. After completion of wax pattern, the crown was then reduced by 1.5 mm on occlusal, proximal, buccal, and lingual surfaces. Now, 30 wax patterns were fabricated with inlay wax over the dies according to the prepared crown. These wax patterns were then sprued and invested. After this, 30 titanium copings with thickness of 0.3 mm were made from Cp-Ti. Out of 30 titanium copings, 15 were sand-blasted whereas 15 were not sand blasted. Ultra-low fusing porcelain was used to fabricate titanium ceramic crowns. Results: We observed that mean fracture load of group 1 was 701.32 N and mean fracture load of group 2 was 356.32 N. On comparing the results, it was found that the difference is statistically significant. The fracture toughness of Group 1 was almost twice that of Group 2. Conclusion:  From the results of the present study, this can be concluded that the fracture load of titanium ceramic crowns increases significantly with sandblasting of titanium after fabrication.
Key words: Ceramic, Fracture load, Titanium.

Received: 13 April, 2019                            Revised:  25 June 2019                             Accepted: 27 June 2019

Corresponding author: Dr. Sunil Dogra, Senior Lecturer, Department of Prosthodontics, Institute of Dental Sciences, Sehora, Jammu, Jammu and Kashmir, India 
                                                                                 
This article may be cited as: Dogra S, Dhiman T, Trivedi A. Role of sandblasting on fracture load of titanium ceramic crowns. J Adv Med Dent Scie Res 2019;7(7): 75-78.