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Occurence of dentinal defects after root canal preparation with R-phase, M-Wire and Gold Wire instruments: a micro-CT analysis.
Cassimiro, Marcely; Romeiro, Kaline; Gominho, Luciana; de Almeida, Andressa; Costa, Larissa; Albuquerque, Diana.
Afiliação
  • Cassimiro M; Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco (UPE), Camaragibe, PE, Brazil. marcelycassimiro@hotmail.com.
  • Romeiro K; , Avenida General Newton Cavalcanti, 1650, Camaragibe, PE, 54753-020, Brazil. marcelycassimiro@hotmail.com.
  • Gominho L; Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco (UPE), Camaragibe, PE, Brazil.
  • de Almeida A; Department of Odontology, Biological Sciences Unit, Federal University of Campina Grande (UFCG), Campina Grande, PB, Brazil.
  • Costa L; Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco (UPE), Camaragibe, PE, Brazil.
  • Albuquerque D; Nuclear Department of Energy, Federal University of Pernambuco (UFPE), Recife, PE, Brazil.
BMC Oral Health ; 17(1): 93, 2017 Jun 02.
Article em En | MEDLINE | ID: mdl-28577367
BACKGROUND: This study aims to evaluate the frequency of dentinal defects after root canal preparation with the ProTaper NEXT, K3XF and WaveOne GOLD systems using microcomputed tomography. METHODS: Sixty permanent mandibular incisors with a single canal were selected. Inspection of the teeth was performed under a stereomicroscope (15x) to observe the presence of pre-existing cracks and fractures lines. Samples were divided into three experimental groups (n = 20): ProTaper NEXT (PTN), K3XF (K3XF) and WaveOne GOLD (WOG). Specimens were scanned through high-resolution microcomputed tomography before and after the preparation of the root canal. Subsequently, all the axial images were examined by two different methods to find possible dentinal defects. Furthermore, an analysis of each millimeter of ten apical millimeters was also performed. The absence or presence of dentinal defects was screened by 3 pre-calibrated blinded examiners. RESULTS: After analysing all 45,720 slices, dentinal defects were observed in 48,33% (22096 slices). PTN, K3XF and WOG groups represented 11,11% (5079 slices), 17,22% (7873 slices) and 20% (n = 9144) of the cross-sectional images, respectively. At 10 apical millimeters (600 slices), 33,33% (200 slices) presented some dentinal defects, representing 7,22% (43 slices), 13,33% (80 slices) and 12,77% (77 slices) of the cross-sectional images in the PTN, K3XF and WOG groups, respectively. All the dentinal defects presented in the postoperative images existed in the images prior to instrumentation. CONCLUSIONS: There was no correlation between the preparation of a root canal using the PTN, K3XF and WOG systems and the formation of new dentinal defects.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Preparo de Canal Radicular / Dentina / Microtomografia por Raio-X Limite: Humans Idioma: En Revista: BMC Oral Health Assunto da revista: ODONTOLOGIA Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Preparo de Canal Radicular / Dentina / Microtomografia por Raio-X Limite: Humans Idioma: En Revista: BMC Oral Health Assunto da revista: ODONTOLOGIA Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido