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Comparison of the centring ability of the ProTaper™ and ProTaper Universal™ rotary systems for preparing curved root canals

Authors

  • Carlos Menezes Aguiar BDS, MSc, PhD,

    Corresponding author
    1. Department of Prosthetics and Oral and Facial Surgery, Faculty of Dentistry, Federal University of Pernambuco, Recife, Brazil
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  • Pamella Bezerra Sobrinho BDS,

    1. Department of Prosthetics and Oral and Facial Surgery, Faculty of Dentistry, Federal University of Pernambuco, Recife, Brazil
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  • Fabíola Teles BDS,

    1. Department of Prosthetics and Oral and Facial Surgery, Faculty of Dentistry, Federal University of Pernambuco, Recife, Brazil
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  • Andréa Cruz Câmara BDS, MSc,

    1. Department of Pharmaceutical Sciences, Student of PhD Course in Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Brazil
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  • Jose Antonio Poli de Figueiredo BDS, MSc, PhD

    1. Pontifical Catholic University of Rio Grande do Sul-PUCRS, Porto Alegre, Brazil
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Professor Dr Carlos Menezes Aguiar, Rua Aristides Muniz, 70/501, Recife, PE 51020-150, Brazil. Email: cmaguiar.ufpe@yahoo.com.br

Abstract

The aim of this in vitro study was to compare the centring ability of the ProTaper™ and ProTaper Universal™ rotary systems for preparing curved root canals, by means of preoperative and postoperative imaging of a cross-section of their coronal, middle and apical thirds. Twenty mesiobuccal root canals of human mandibular first molars with a degree of curvature ranging from 55° to 60° were randomly divided into two groups of 10 specimens each: Group 1, ProTaper™ rotary system; and Group 2, ProTaper Universal™ rotary system. The data were analysed statistically by Kruskal–Wallis and Student's t-test at the 5% significance level. The results showed that the differences between the percentages of the presence of deviation observed were not statistically significant. Both systems showed the capacity for producing centred preparations in curved root canals with low proportions of deviation.

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