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Radiopacity evaluation of root-end filling materials by digitization of images
(Journal of Applied Oral Science, 2008-11-01) [Trabalho apresentado em evento]
The purpose of this study was to evaluate the radiopacity of 5 root-end filling materials (white MTA-Angelus, grey MTA-Angelus, IRM, Super EBA and Sealer 26). Five specimens (10 mm diameter X 1 mm thickness) were made from ...
Compressive fatigue in titanium dental implants submitted to fluoride ions action
(Journal of Applied Oral Science, 2007-07-01) [Trabalho apresentado em evento]
The aim of this study was to assess the influence of a fluoridated medium on the mechanical properties of an internal hexagon implant-abutment set, by means of compression, mechanical cycling and metallographic characterization ...
Background interference on the color of dental composite materials with different thickness by digital contrast
(Progress in Biomedical Optics and Imaging - Proceedings of SPIE, 2007-08-31) [Trabalho apresentado em evento]
In this work the color dependence of resin composites with the background color was evaluated. The objective was to measure since what thickness the color of the sample stops being influenced by the color of the background ...
Tensile bond strength: Evaluation of four current adhesive systems in abraded enamel and deep dentin
(Journal of Indian Prosthodontist Society, 2007-04-01) [Trabalho apresentado em evento]
This study aimed to evaluate the tensile bond strength of adhesive systems in abraded enamel and deep dentin of the occlusal surface of forty human molar teeth. Enamel surfaces as well as the rest of the teeth were coated ...
Artificial methods of dentine caries induction: A hardness and morphological comparative study
(Archives of Oral Biology, 2009-12-01) [Trabalho apresentado em evento]
Objective: To assess the ability of two chemical and a microbiological methods to produce dentine caries lesions resembling naturally developed dentine caries lesions.Design: Forty sound second primary molars were divided ...
Biological Response to Wollastonite Doped alpha-Tricalcium Phosphate Implants in Hard and Soft Tissues in Rats
(Bioceramics 21, 2009-01-01) [Trabalho apresentado em evento]
The biological response following subcutaneous and bone implantation of beta-wollastonite(beta-W)-doped alpha-tricalcium phosphate bioceramics in rats was evaluated. Tested materials were: tricalciurn phosphate (TCP), ...
Haemodynamic effects of hypothalamic disconnection in anaesthetized rats
(Autonomic Neuroscience: Basic and Clinical, 2002-06-28) [Trabalho apresentado em evento]
The aim of the present study was to analyse the haemodynamic effects induced by the hypothalamic disconnection (HD) caudal or rostral to the paraventricular nucleus of the hypothalamus (PVN). Mean arterial pressure (MAP), ...
Evaluation of procera/porcelain interface in metal-free prosthesis
(Materials Science Forum, 2005-12-01) [Trabalho apresentado em evento]
Prosthetic substructures for dental application are veneered by porcelain comprising a structure with different elastic modulus and thermal expansion coefficients layers. This structure may present residual stresses in ...
Effects in the population inversion of3H4 level in Tm, Tm-Tb and Tm-Eu doped germanate glasses for amplifiers applications
(Proceedings of SPIE - The International Society for Optical Engineering, 2006-10-16) [Trabalho apresentado em evento]
The population inversion of the Tm3+ in GLKZ glass involved in the 1470 nm emission (3H4 → 3F 4) as a function of Tb (or Eu) concentration was calculated by computational simulation for a CW laser pumping at 792 nm. These ...
Role of the medial septal area on pilocarpine-induced salivary secretion and water intake
(Brain Research, 2009-10-28) [Trabalho apresentado em evento]
Peripheral injection of pilocarpine, a cholinergic muscarinic agonist, induces salivation, water intake and hypertension. The medial septal area (MSA) is involved in cardiovascular control and fluid-electrolyte balance. ...