evaluation of apical deviation in root canals instrumented with k3 and protaper systems avaliação do desvio apical em canais instrumentados pelos sistemas k3 e protaper

Clicks: 288
ID: 254016
2006
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Abstract
OBJECTIVES: this study evaluated the apical deviation of curved root canals instrumented with K3 and ProTaper systems. MATERIAL AND METHODS: twenty root canals of human maxillary and mandibular first molars were employed, which were divided into 2 groups: group A (10 teeth) was instrumented with the K3 system, and group B (10 teeth) with the ProTaper system. Evaluation of deviation was performed by double radiographic exposure. Radiographs were achieved before and after instrumentation, with 0.3-second, thus allowing superimposition of images. Three-dimensional computerized tomograph was performed in 3 specimens in each group, as an additional means to evaluate the apical deviation. RESULTS: were evaluated by the parametric test Student-Newman-Keuls at 5%, which did not reveal significance between groups concerning the apical deviation. The results of computerized tomograph images demonstrated that the larger deviation of the root canal occurred at the distolingual area for both systems. CONCLUSIONS: both techniques produced a mild apical deviation. Computerized microtomography was shown to be accurate for experimental endodontics studies.
OBJETIVOS: avaliar o desvio apical de canais radiculares curvos instrumentados pelos sistemas K3 e ProTaper. MATERIAIS E MÉTODOS: foram utilizados 20 canais radiculares de primeiros molares superiores e inferiores humanos, os quais foram divididos em 2 grupos, o grupo A (10 dentes) foi instrumentado pelo sistema K3 e o grupo B (10 dentes) com o sistema ProTaper, a forma de avaliação do desvio foi a dupla exposição radiográfica. As tomadas radiográficas foram feitas antes e após a instrumentação, com um tempo de 0,3 segundos em cada exposição, ocorrendo assim, sobreposição das imagens. Em 3 espécimes, de cada grupo, foi realizada a tomografia computadorizada tridimensional, como forma adicional de avaliar o desvio apical . Os resultados obtidos foram avaliados pelo teste paramétrico Student-Newman-Keuls 5% o qual denotou não haver significância em relação ao desvio apical entre os grupos estudados. Os resultados das imagens de tomografia computadorizada mostraram que o maior desvio do canal radicular ocorreu na área disto-lingual, para ambos os sistemas estudados. CONCLUSÃO: ambas as técnicas promoveram desvio apical. A tomografia computadorizada revelou ser um método de análise promissor em estudos in vitro na área de endodontia.
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Authors ;Mariana Diniz Bisi dos Santos;Marília Fagury Marceliano;Patrícia Rodrigues de Almeida Silva e Souza
Journal journal of animal and plant sciences
Year 2006
DOI
10.1590/S1678-77572006000600013
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572006000600013
Keywords
instrumentation root canal k3dentistry

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