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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Efficacy of xylene and passive ultrasonic irrigation on remaining root filling material during retreatment of anatomically complex teeth

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Author(s):
Cavenago, B. C. [1] ; Ordinola-Zapata, R. [1] ; Duarte, M. A. H. [1] ; del Carpio-Perochena, A. E. [1] ; Villas-Boas, M. H. [1] ; Marciano, M. A. [1] ; Bramante, C. M. [1] ; Moraes, I. G. [1]
Total Authors: 8
Affiliation:
[1] Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Bauru, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: International Endodontic Journal; v. 47, n. 11, p. 1078-1083, NOV 2014.
Web of Science Citations: 23
Abstract

AimTo evaluate the volume of remaining filling material in the mesial root canals of mandibular molars after root canal retreatment with different procedures performed sequentially. MethodologyThe mesial root canals of 12 human first mandibular molars were instrumented using the BioRace system until a size 25, .06 taper instrument. The mesial roots were filled with gutta-percha and AH-Plus using a vertical compaction technique. The specimens were scanned using microcomputed tomography with a voxel size of 16.8m before and after the retreatment procedures. To remove the filling material, the root canals were enlarged until the size 40, .04 taper instrument. The second step was to irrigate the root canals with xylene in the attempt to clean the root canals with paper points. In the third step, the passive ultrasonic irrigation technique (PUI) was performed using 2.5% sodium hypochlorite. The initial and residual filling material volume (mm(3)) after each step was evaluated from the 0.5 to 6.5mm level. The obtained data were expressed in terms of percentage of residual filling material. Statistical analysis was performed using the Friedman test (P<0.05). ResultsAll specimens had residual filling materials after all retreatment procedures. Passive ultrasonic irrigation enhanced the elimination of residual filling material in comparison with the mechanical stage at the 0.5-2.5mm and 4.5-6.5mm levels (P<0.05). No significant difference was found between xylene and PUI methods. ConclusionsFilling materials were not completely removed by any of the retreatment procedures. The use of xylene and PUI after mechanical instrumentation enhanced removal of materials during endodontic retreatment of anatomically complex teeth. (AU)

FAPESP's process: 11/18272-1 - The effect of using phytotherapics and propolis in physicochemical properties, antimicrobial and biocompatibility of MTA
Grantee:Bruno Cavalini Cavenago
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 10/16072-2 - Microtomograph (MicroCT) at the anatomy and procedures endodontics study
Grantee:Clovis Monteiro Bramante
Support Opportunities: Regular Research Grants
FAPESP's process: 10/16002-4 - On the chemichal and physical endodontic methods to decontaminate intraorally infected dentin
Grantee:Ronald Ordinola Zapata
Support Opportunities: Scholarships in Brazil - Doctorate