Buscar
Mostrando ítems 61-70 de 23610
Influence of the number of load cycles to obtain the stiffness properties of angico preto (<i>Anadenanthera macrocarpa</i>) wood specie
(2015)
The tests used to obtain the stiffness properties of wood are made with two loading cycles, as defined by the Brazilian standard ABNT NBR 7190 (Design of Timber Structures). However, the possibility of reducing the number ...
OWA Operators in Portfolio Selection
(Springer, 2015)
Portfolio choice is the process of selecting the optimal proportion of
various assets. One of the most well-known methods is the mean-variance approach
developed by Harry Markowitz. This paper introduces the ordered ...
Fracture resistance of composite resin cores with or without prefabricated posts over different substrates
(2011-09-01)
The fracture resistance of endodontically treated teeth has been an obstacle to the durability of the remaining teeth and restorations. The aim of this study was to evaluate the fracture resistance of endodontically treated ...
Apical leakage after root canal filling with an experimental calcium hydroxide gutta-percha point
(1996-12-01)
This study was an in vitro analysis of the apical seal of root canals filled with an experimental calcium hydroxide gutta-percha point. One hundred and ten recently extracted human permanent teeth with a single root were ...
A comparison of molar root canal preparation using stainless-steel and nickel-titanium instruments
(1999-12-01)
Fifty-four extracted human mandibular molars were embedded and sectioned at two levels. The reassembled mesial root canals were prepared with stainless-steel hand K-files (Flexofiles) and either Nitiflex or Mity nickel-titanium ...
The effect of endodontic materials on the optical density of dyes used in marginal leakage studies
(2008-01-01)
The aim of this study was to determine the effect of the exposure of different endodontic materials to different dye solutions by evaluating the optical density of the dye solutions. Seventy-five plastic tubes were filled ...
Fracture resistance of composite resin cores with or without prefabricated posts over different substrates
(2011-09-01)
The fracture resistance of endodontically treated teeth has been an obstacle to the durability of the remaining teeth and restorations. The aim of this study was to evaluate the fracture resistance of endodontically treated ...