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ORIGINAL ARTICLE
Year : 2014  |  Volume : 5  |  Issue : 2  |  Page : 203-208

Cleaning capacity of hybrid instrumentation technique using reamer with alternating cutting edges system files: Histological analysis


1 Department of Endodontics, School of Dentistry, Federal University of Amazonas, Brazil
2 Department of Restorative Dentistry, Araraquara School of Dentistry, University of Sao Paulo State, Araraquara, Brazil
3 Department of Endodontics, State University of Amazonas, Manaus, AM, Brazil
4 Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of Sao Paulo, Ribeirao Preto, SP, Brazil

Correspondence Address:
Lucas da Fonseca Roberti Garcia
Rua Siro Kaku, No. 72, Apto. 73, Bairro Jardim Botanico, CEP: 14021 614, Ribeirao Preto, Sao Paulo
Brazil
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0976-237X.132330

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Aim: The aim of the following study is to evaluate the cleaning capacity of a hybrid instrumentation technique using Reamer with Alternating Cutting Edges (RaCe) system files in the apical third of mesial roots of mandibular molars. Materials and Methods: Twenty teeth were selected and separated into two groups (n = 20) according to instrumentation technique as follows: BioRaCe - chemomechanical preparation with K-type files #10 and #15; and files BioRaCe BR0, BR1, BR2, BR3, and BR4; HybTec - hybrid instrumentation technique with K-type files #10 and #15 in the working length, #20 at 2 mm, #25 at 3 mm, cervical preparation with Largo burs #1 and #2; apical preparation with K-type files #15, #20, and #25 and RaCe files #25.04 and #30.04. The root canals were irrigated with 1 ml of 2.5% sodium hypochlorite at each change of instrument. The specimens were histologically processed and photographed under light optical microscope. The images were inserted onto an integration grid to count the amount of debris present in the root canal. Results: BioRaCe presented the highest percentage of debris in the apical third, however, with no statistically significant difference for HybTec (P > 0.05). Conclusions: The hybrid technique presented similar cleaning capacity as the technique recommended by the manufacturer.


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