Bond strength between CADCAM ceramics and titanium
Date
2015
DOI
Authors
Naser, Ashraf M.
Version
OA Version
Citation
Abstract
Study aims to assess the bonding strength between CAD/CAM (zirconia, IPS e.max, Enamic) ceramics and titanium using different types of luting cements. Also, our study aims to assess other factors that might influence cementation success and strength, which include the effect of titanium sandblasting and TiN coating. The first aim of this study is to assess the bonding strength between CAD/CAM ceramics and titanium using 2 resin cements that include Panavia F2.0 and Multilink Implant and cyanoacrylate glue. Second aim of this study is to evaluate the effect of sandblasting titanium surface and TiN coating and how this procedure could affect the bonding strength of titanium to CAD/CAM ceramics using the previously mentioned cements.
Methods: Samples were fabricated according to ISO 9693-1:2010. The Schwickerath crack initiation test, 486 titanium bars with dimensions of 3mm by 25mm and a thickness of 5mm were cut and split into three groups, first group was left as received and second group was sandblasted, third group was TiN coated. 162 samples of each of the CAD/CAM ceramics were cut with dimensions of 8mm by 3mm with a thickness of 1mm. Cementation procedures were according to manufacturer specifications and using a cementing apparatus for standardizing the load. Groups were split into three batches for aging, dry, soaked in distilled water for five days and thermocycled for 5000 cycles. Testing was carried out on instron universal testing machine (Schwickerath crack initiation test).
Results: The results indicate three main trends in the experimented materials, cyanoacrylate was the strongest cement in the dry phase exceeding bond strength of 150 mpa but deteriorated rapidly when aging was introduced. Panavia F2.O was the mpst stable cement, Multilink Implant was the weakest cement. Sandblasted titanium was more significantly different to as-received and TiN coated titanium and no difference between the latter. Zirconia was the weakest bond strength in the CAD/CAM ceramics and no difference between IPS e.max and Enamic.
Conclusions: Sandblasting titanium surface increases bond strength, surface modification of IPS e.max via etching improves bond strength also Enamic bond strength was comparable to e.max but with no surface modification, Zirconia had the lowest bond strength. Cyanoacrylate had the highest bond strength numbers in dry phase but deteriorated dramatically after aging and a large amount of samples where lost before testing in the thermocycling phase. Panavia was the most stable cement, Multilink Implant resin cement was the weakest.
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Thesis (MSD) --Boston University, Goldman School of Dental Medicine, 2015 (Department of Prosthodontics and Biomaterials).
Includes bibliographic references: leaves 110-114.
Thesis (MSD) --Boston University, Goldman School of Dental Medicine, 2015 (Department of Prosthodontics and Biomaterials).
Includes bibliographic references: leaves 110-114.
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This work is protected by copyright. Downloading is restricted to the BU community. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.