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Removal torque and physico-chemical characteristics of dental implants etched with hydrofluoric and nitric acid : an experimental study in Beagle dogs

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Removal torque and physico-chemical characteristics of dental implants etched with hydrofluoric and nitric acid : an experimental study in Beagle dogs

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dc.contributor.author Martínez González, José María es
dc.contributor.author García Sabán, Francisco es
dc.contributor.author Ferrándiz Bernal, Javier es
dc.contributor.author Gonzalo Lafuente, Juan Carlos es
dc.contributor.author Cano Sánchez, Jorge es
dc.contributor.author Barona Dorado, Cristina es
dc.date.accessioned 2017-12-11T12:51:44Z
dc.date.available 2017-12-11T12:51:44Z
dc.date.issued 2006 es
dc.identifier.citation Martínez González, José María ; García Sabán, Francisco ; Ferrándiz Bernal, Javier ; Gonzalo Lafuente, Juan Carlos ; Cano Sánchez, Jorge ; Barona Dorado, Cristina. Removal torque and physico-chemical characteristics of dental implants etched with hydrofluoric and nitric acid : an experimental study in Beagle dogs. En: Medicina oral, patología oral y cirugía bucal. Ed. inglesa, 11 3 2006: 13- es
dc.identifier.uri http://hdl.handle.net/10550/63522
dc.description.abstract Objective: To study the composition, surface characteristics and response to removal torque of an implant surface subjected to hydrofluoric acid etching and posterior passivating with hydrofluoric and nitric acid. Study design: Twelve implants were initially selected and their physico-chemical characteristics were evaluated by means of energy-dispersive X-rays (EDS), scanning electron microscopy (SEM) and photoelectron spectroscopy (XPS). In addition, 24 implants ? 12 measuring 8 mm and 12 measuring 10 mm in length ? were implanted in 6 Beagle dogs. Twelve implants were removed after a recovery period of 6 weeks, followed by removal of the remaining 12 implants after 12 weeks, using a torque calibrator (Gauge Tonichi® model BGT150CN-S) with a force registry range of 0-150 Ncm. Results: EDS analysis of the surface chemical composition only revealed the presence of titanium in the etched surfaces. In the same way as with the surfaces of other dental implants, XPS analysis revealed traces of other elements present in the surface, fundamentally carbon. Following dual acid etching, the surface showed the roughness resulting from acid action, with a morphology that proved to be quite homogeneous. The roughness values obtained exceeded 1 µm. The mean removal torque values after 6 weeks were 79.7 Ncm for the 8 mm implants and 115 Ncm for the 10 mm implants. After 12 weeks, these values increased to 101.2 Ncm and 139.7 Ncm, respectively. Conclusions: Hydrofluoric and nitric acid etching affords optimum surface characteristics comparable to those of other surfaces. The recorded removal torque values raise the possibility of human clinical application for early or immediate loading procedures. es
dc.title Removal torque and physico-chemical characteristics of dental implants etched with hydrofluoric and nitric acid : an experimental study in Beagle dogs es
dc.type journal article es_ES
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi es
dc.type.hasVersion VoR es_ES

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