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Evaluation of the efficiency of different instrumentation for root canal retreatment using micro-computed tomography / 华西口腔医学杂志
West China Journal of Stomatology ; (6): 296-303, 2012.
Artículo en Chino | WPRIM | ID: wpr-322399
ABSTRACT
<p><b>OBJECTIVE</b>To establish the three-dimensional model of human permanent premolars based on Micro-computed tomography (Micro-CT) data, and evaluate the efficiency quantitatively of two different instrumentations for root canal retreatment.</p><p><b>METHODS</b>Forty extracted permanent premolars for the reason of orthodontic treatment were collected, prepared by using ProTaper Ni-Ti files and filled by cold gutta pertscha lateral condensation technique. The subjects were scanned by Micro-CT. Forty teeth were randomly divided into two groups and retreated by K-Flexo files and ProTaper Universal retreatment system respectively. Then all subjects were scanned again, and the mean percentage of remaining filling materials and the scores of remaining filling materials presented in upper, middle and apical 1/3 of the canal were calculated.</p><p><b>RESULTS</b>Mean percentage of the remaining filling materials by K-Flexo files was lower than that by ProTaper Universal retreatment system (P=0.005). The scores demonstrated that K-Flexo files had greater efficiency than ProTaper Universal retreatment system when retreating the apical 1/3 of canal (P<0.05).</p><p><b>CONCLUSION</b>This study shows that both techniques could not remove filling materials completely.</p>
Asunto(s)
Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Materiales de Obturación del Conducto Radicular / Tratamiento del Conducto Radicular / Titanio / Preparación del Conducto Radicular / Retratamiento / Aleaciones Dentales / Cavidad Pulpar / Microtomografía por Rayos X / Gutapercha / Níquel Tipo de estudio: Estudio pronóstico Límite: Humanos Idioma: Chino Revista: West China Journal of Stomatology Año: 2012 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Materiales de Obturación del Conducto Radicular / Tratamiento del Conducto Radicular / Titanio / Preparación del Conducto Radicular / Retratamiento / Aleaciones Dentales / Cavidad Pulpar / Microtomografía por Rayos X / Gutapercha / Níquel Tipo de estudio: Estudio pronóstico Límite: Humanos Idioma: Chino Revista: West China Journal of Stomatology Año: 2012 Tipo del documento: Artículo