Lucas F R Garcia

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As compared with continuous rotary systems, reciprocating motion is believed to increase the fatigue resistance of NiTi instruments. We compared the cyclic fatigue and torsional resistance of reciprocating single-file systems and continuous rotary instrumentation systems in simulated root canals. Eighty instruments from the ProTaper Universal, WaveOne,(More)
AIM To compare the optical densities (OD) of calcium hydroxide (CH) and glass ionomer cement with the same thicknesses of the dental structures. MATERIALS AND METHODS Eighteen specimens of each material, with thicknesses of 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0 mm were made in a Teflon matrix. To compare the radiopacity of the materials with the dental(More)
AIM To assess the biocompatibility of two endodontic pastes based on calcium hydroxide and propolis, using two vehicles - non-fractionated Copaiba-oilresin (A) and volatile fraction of Copaiba-oilresin (B), in the connective tissue of rats. MATERIALS AND METHODS Fifteen rats had four polyethylene tubes implanted in their backs; each pair of tubes(More)
The following article from International Endodontic Journal, 'Micro-computed tomography evaluation of apical transportation and centring ability of Reciproc and WaveOne systems in severely curved root canals' by D. A. de Meireles, T. C. C. A. de Brito, A. A. F. Marques, A. D. B. Garrido, L. F. R. Garcia & E. C. Sponchiado Jr, published online on 5 February(More)
AIM To assess the biocompatibility of an experimental endodontic paste based on the ethyl acetate fraction of Pothomorphe umbellata + calcium hydroxide, using propylene glycol as vehicle, in connective tissue of rats. MATERIALS AND METHODS Fifteen rats had four polyethylene tubes implanted in their backs, with each one containing the experimental paste.(More)
AIM The aim of the present study was to evaluate the effect of large instrument use on the shaping ability and apical debris extrusion of rotary and reciprocating systems in oval-shaped root canals. METHODS Forty-five mandibular premolars, with an 18-mm long, oval-shaped single canal, and apical diameter ranging from 300 to 350 μm, were separated into(More)
In regard to mental illness, brain donation is essential for the biological investigation of central pathology. Nevertheless, little is known about the thoughts of people with mental disorders on tissue donation for research. Here, our objective was to understand the attitudes and opinions of people treated for bipolar disorder and their relatives regarding(More)
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