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Modification of the working length after rotary instrumentation. : a comparative study of four systems

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Modification of the working length after rotary instrumentation. : a comparative study of four systems

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dc.contributor.author Martín Micó, Milagros es
dc.contributor.author Forner Navarro, Leopoldo es
dc.contributor.author Almenar García, Amelia del Pilar es
dc.date.accessioned 2017-09-06T10:53:48Z
dc.date.available 2017-09-06T10:53:48Z
dc.date.issued 2009 es
dc.identifier.citation Martín Micó, Milagros ; Forner Navarro, Leopoldo ; Almenar García, Amelia del Pilar. Modification of the working length after rotary instrumentation. : a comparative study of four systems. En: Medicina oral, patología oral y cirugía bucal. Ed. inglesa, 14 3 2009: 10- es
dc.identifier.uri http://hdl.handle.net/10550/60562
dc.description.abstract Objective: To determine variation in post-instrumentation working length and root area in the following rotary systems: ProTaper, RaCe, Mtwo and K3. Study design: A sample of 40 resin blocks with double curvature (at 14 and 16 mm) and a 33º angle was used. Working length was verified with a digital measure using a number 10 K file. The specific sequence for each rotary system was followed. The canal was measured between each file, and the variation noted to determine which file showed the greatest variation within a same system and the different systems were compared. 1.5 X pre and post-instrumentation microscopic photographs were taken and measurements of the area were taken with an image analysis programme. Results: The area was found to increase by the following amounts: ProTaper: 21.85 mm²; Mtwo: 20.16 mm²; K3: 17.24 mm² and RaCe: 16.09 mm² The differences in variation of the working length were: ProTaper: 0.81 mm; Mtwo: 1.07 mm; K3: 0.31 mm and RaCe: 0.81 mm Conclusions: The values for the variation in working length are clinically not very significant. All the rotary systems analysed showed a tendency to straighten the canal and eliminate the apical curvature, and the ProTaper system was found to produce the greatest modification to the canal area and structure. es
dc.title Modification of the working length after rotary instrumentation. : a comparative study of four systems 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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