Rotary Endodontic Instruments
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. Analise de falhas de instrumentos endodonticos rotatorios de Ni-Ti em odontologia / Failure analysis of rotary endodontic instruments of Ni-Ti in dentistry
Rotary endodontic instruments of Ni-Ti (rotary files) are used in order to prepare endodontic dental conducts and show memory shape, high flexibility, and different designs. Although these characteristics, when used in endodontics clinic, sometimes occur fracture inside the conduct of the tooth and, as a result of that, low life, high cost, and iatrogen. The
Publicado em: 2008
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14. Surface finishing of unused rotary endodontic instruments: a SEM study
Durante a terapia endodôntica, a ação de limpeza é realizada com os instrumentos endodônticos auxiliada por substâncias químicas. Sendo assim, é importante que o endodontista conheça como são os instrumentos. Este trabalho visou avaliar a qualidade do acabamento de superfície de instrumentos endodônticos rotatórios por meio de microscopia eletr�
Brazilian Dental Journal. Publicado em: 2008
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15. Comparative analysis of dentin apical extrusion through different manual and rotary instrumentation root canal technique / Análise comparativa in vitroda extrusão apical de dentina produzida por diferentes técnicas de instrumentação manuais e rotatórias nos canais radiculares
Patients general health is fundamental during endodontic therapy. Thus, we must minimize the harmful instrumentation effects in the periapical tissues. The aim of this study was to compare the amount of solid material extruded beyond the apical foramen among 2 manual instrumentation techniques: Step-Back and the Oregons technique, as well as 3 mechanorotary
Publicado em: 2007
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16. Análise da limpeza dentinária em canais radiculares preparados com um sistema rotatório e diferentes substâncias químicas / Analysis of the cleaning of root canal prepared with one rotary instruments system and different chemical substances
The development of nickel-titanium (NiTi) endodontic instruments results in more quickness during the root canal shaping phase that induce us to discuss if really would be the chemical substances are having opportunities to act properly, considering that the time of action of the same was significantly reduced. The object of this research was evaluate, using
Publicado em: 2007
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17. Resistência à fadiga e comportamento em torção de instrumentos endodônticos de NiTi Profile
A comparative study of the torsion behavior and of the fatigue resistance of rotary NiTi endodontic instruments was performed in this work. ProFile 20/.04, 25/.04, 30/.04, 20/.06, 25/.06 e 30/.06 instruments were analyzed at the following conditions: Control Group 01, containing 10 non-used instruments of each size and taper, tested until rupture in fatigue
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/01/2004
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18. EFEITO DO TRATAMENTO SUPERFICIAL EM LIMAS DE NITI SUBMETIDOS A CARREGAMENTO EM TORÇÃO / THE EFFECT OF SURFACE ON NITI FILES SUBJECTED TO TORSION LOADING
NiTi Profile® 25/.04 files do not undergo surface polishing treatments after machining, and therefore exhibit local stress concentrators and, consequently, areas of cracking and fractures. The effect of different surface conditions on the torsional strength of endodontic files were evaluated. 18 NiTi Profile® 25/.04 rotary files were examined by scanning e
Publicado em: 2004
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19. "Influência da técnica de desobturação e do limite de obturação na extrusão apical" / Apical extrusion: influence on gutta-percha removal technique and root filling limit.
O controle da extrusão apical durante a reintervenção endodôntica é essencial para o sucesso do novo tratamento. Nesse contexto, o presente estudo teve como objetivo comparar a quantidade de material sólido extruído na desobturação de canais radiculares variando-se a técnica de esvaziamento e o limite de obturação. Foram utilizados 40 incisivos i
Publicado em: 2004
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20. Morfometria comparativa in vitro do desgaste dentinário do terço cervical de raízes mésio-vestibulares de primeiros molares superiores produzido por instrumentos rotatórios de aço e de níquel-titânio / In vitro morphometric study of cervical third dentin wearing in upper molar mesiobuccal roots after preparation with iron burs and rotary nickel-titanium instruments
Nowadays is common sense among endodontists that in root canal preparation, mainly the curved ones, the crown-down approach enlarging the cervical third prior instrumentation of the apical third regions provides better interaction between the instrument and the canal walls than the conventional methods. Technically it provides an adequate form to achieve the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/10/2002