Comparison of GPX with or without solvent and hand files in removing filling materials from root canals-An ex vivo study


Autoria(s): BETTI, Luciana Viti; BRAMANTE, Clovis Monteiro; MORAES, Ivaldo Gomes de; BERNARDINELI, Norberti; GARCIA, Roberto Brandao
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

19/10/2012

19/10/2012

2010

Resumo

Objective. The aim of this study was to compare GPX instruments and hand files for gutta-percha removal. Study design. Fifty maxillary central incisors with a single straight canal were instrumented and filled. The teeth were divided into 5 groups of 10 specimens each, according to the gutta-percha removal techniques: group 1: GPX (21-mm-long teeth); group 2: GPX and xylol as solvent (21-mm-long teeth); group 3: GPX (25-mm-long teeth); group 4: GPX and xylol as solvent (25-mm-long teeth); and group 5: hand files and xylol as solvent. The amount of time for gutta-percha removal and the number of fractured instruments were evaluated. Radiographs were taken, and the teeth were grooved longitudinally and split. The area of residual debris was measured using Sigma Scan software. Results. The time for filling material removal was significantly shorter when GPX was used (P < .05). Overall, hand files and solvent produced fewer remnants of filling materials (P < .05). In the GPX 25 mm-long teeth group, the filling material was not removed in the apical third. Conclusions. Under the experimental conditions, the GPX instruments proved to be faster than hand instruments in removing root filling materials; however, hand instruments left a smaller amount of residual filling materials on the canal walls. The GPX instruments did not pull the gutta-percha beyond its tip. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010; 110: 675-680)

Identificador

ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTOLOGY, v.110, n.5, p.675-680, 2010

1079-2104

http://producao.usp.br/handle/BDPI/25913

10.1016/j.tripleo.2010.06.012

http://dx.doi.org/10.1016/j.tripleo.2010.06.012

Idioma(s)

eng

Publicador

MOSBY-ELSEVIER

Relação

Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology

Direitos

restrictedAccess

Copyright MOSBY-ELSEVIER

Palavras-Chave #GUTTA-PERCHA REMOVAL #ROTARY RETREATMENT SYSTEM #ENDODONTIC RETREATMENT #CASE SELECTION #NITI INSTRUMENTS #CLEANING ABILITY #APICAL SEAL #EFFICACY #SAFETY #Dentistry, Oral Surgery & Medicine
Tipo

article

original article

publishedVersion