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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 2016-07-18T06:42:20Z
dc.date.available 2016-07-18T06:42:20Z
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: Journal of Clinical and Experimental Dentistry, 2009, Vol. 1, No. 1: 19-23 es
dc.identifier.uri http://hdl.handle.net/10550/54544
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. en_US
dc.subject Odontología es
dc.subject Ciencias de la salud 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.type.hasVersion VoR es_ES

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