Effect of passive ultrasonic agitation during final irrigation on cleaning capacity of hybrid instrumentation.
10.5395/rde.2014.39.2.104
- Author:
Marcilene Coelho VINHORTE
1
;
Eduardo Hideki SUZUKI
;
Maira Sousa DE CARVALHO
;
Andre Augusto Franco MARQUES
;
Emilio Carlos SPONCHIADO JUNIOR
;
Lucas da Fonseca Roberti GARCIA
Author Information
1. Department of Endodontics, School of Dentistry, Amazonas State University, Manaus, AM, Brazil.
- Publication Type:Original Article
- Keywords:
Ni-Ti;
ProTaper;
Sodium hypoclorite;
Ultrasonic
- MeSH:
Catheterization;
Catheters;
Crowns;
Dental Pulp Cavity;
Dihydroergotamine*;
Incisor;
Sodium Hypochlorite;
Tooth Cervix;
Ultrasonics*
- From:Restorative Dentistry & Endodontics
2014;39(2):104-108
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: To evaluate the effect of passive ultrasonic agitation on the cleaning capacity of a hybrid instrumentation technique. MATERIALS AND METHODS: Twenty mandibular incisors with mesiodistal-flattened root shape had their crowns sectioned at 1 mm from the cementoenamel junction. Instrumentation was initiated by catheterization with K-type files (Denstply Maillefer) #10, #15, and #20 at 3 mm from the working length. Cervical preparation was performed with Largo bur #1 (Dentsply Maillefer) followed by apical instrumentation with K-type files #15, #20 and #25, and finishing with ProTaper F2 file (Denstply Maillefer). All files were used up to the working length under irrigation with 1 mL of 2.5% sodium hypochlorite (Biodynamica) at each instrument change. At the end of instrumentation, the roots were randomly separated into 2 groups (n = 10). All specimens received final irrigation with 1 mL of 2.5% sodium hypochlorite. The solution remained in the root canals in Group 1 for one minute; and ultrasonic agitation was performed in Group 2 for one minute using a straight tip inserted at 1 mm from working length. The specimens were processed histologically and the sections were analyzed under optic microscope (x64) to quantify debris present in the root canal. RESULTS: The samples submitted to ultrasonic agitation (Group 2) presented significant decrease in the amount of debris in comparison with those of Group 1 (p < 0.05). CONCLUSIONS: The hybrid instrumentation technique associated with passive ultrasonic agitation promoted greater debris removal in the apical third of the root canals.
