Now showing items 31-40 of 95
An in vitro comparison of nickel and chromium release from brackets
(Sociedade Brasileira de Pesquisa Odontológica, 2009)
This study aimed at comparing amounts of nickel (Ni) and chromium (Cr) released from brackets from different manufacturers in simulated oral environments. 280 brackets were equally divided into 7 groups according to ...
Comparative study of two commercially pure titanium casting methods
(Faculdade De Odontologia De Bauru - USP, 2010)
The interest in using titanium to fabricate removable partial denture (RPD) frameworks has increased, but there are few studies evaluating the effects of casting methods on clasp behavior. OBJECTIVE: This study compared ...
Effect of hexavalent chromium on proliferation and differentiation to adipocytes of 3T3-L1 fibroblasts
Heavy metals contamination has become an important risk factor for public health and the environment. Chromium is a frequent industrial contaminant and is also used in orthopaedic joint replacements made from cobalt–chro ...
Effect of different cleansers on the weight and ion release of removable partial denture: an in vitro study
(Faculdade De Odontologia De Bauru - USP, 2011)
OBJECTIVE: Removable partial dentures (RPD) require different hygiene care, and association of brushing and chemical cleansing is the most recommended to control biofilm formation. However, the effect of cleansers has not ...
Deformation of Implant Abutments After Framework Connection Using Strain Gauges
(Allen Press Inc, 2012-04-01)
When a cylinder is connected to an abutment it is expected that abutment and cylinder will be subjected to compression forces throughout their periphery because of the clamping force exerted by the screw. The deformation ...
Effect of cantilever length and framework alloy on the stress distribution of mandibular-cantilevered implant-supported prostheses
(Wiley-Blackwell Publishing, Inc, 2009-07-01)
The purpose of this in vitro study was to analyze the stress distribution on components of a mandibular-cantilevered implant-supported prosthesis with frameworks cast in cobalt-chromium (Co-Cr) or palladium-silver (Pd-Ag) ...
Discrepancies In Marginal And Internal Fits For Different Metal And Alumina Infrastructures Cemented On Implant Abutments
Influence of Surface Treatment on the Shear Bond Strength of Ceramics Fused to Cobalt-Chromium
Purpose: To evaluate the influence of surface treatment on the shear bond strength between a Co-Cr alloy and two ceramics.Materials and Methods: Forty-eight metal cylinders were made (thickness: 4 mm, height: 3.7 mm) ...