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

• Published in: Contemporary clinical dentistry Vol. 5; no. 2; pp. 203 - 208
• Main Authors: Júnior, Emilio Carlos Sponchiado, da Fonseca, Tiago Silva, da Frota, Matheus Franco, de Carvalho, Fredson Marcio Acris, Marques, André Augusto Franco, Garcia, Lucas da Fonseca Roberti
• Format: Journal Article
• Language: English
• Published: India Medknow Publications and Media Pvt. Ltd 01.04.2014; Medknow Publications & Media Pvt. Ltd; Medknow Publications & Media Pvt Ltd; Wolters Kluwer Medknow Publications
• Subjects: Cleaning capacity; Dental care; Dental equipment; Dental equipment and supplies; Dental research; Dentists; endodontics; Evaluation; Histology; Original; root canal treatment; rotary endodontics; Utilization; endodontics; rotary endodontics; Cleaning capacity; root canal treatment
• ISSN: 0976-237X; 0976-2361
• DOI: 10.4103/0976-237X.132330

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. 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. BioRaCe presented the highest percentage of debris in the apical third, however, with no statistically significant difference for HybTec (P > 0.05). The hybrid technique presented similar cleaning capacity as the technique recommended by the manufacturer.