The aim of this micro-computed tomography study was to describe the shaping properties of ProGlider/ProTaper Next (PG/PTN) and ScoutRace/BioRace (SR/BR) nickel-titanium rotary systems. METHODS: Thirty maxillary first permanent molars were selected. Mesiobuccal canals were randomly assigned (n = 15) to PG/PTN or SR/BR groups. Irrigation was performed with 5% NaOCl and 10% EDTA. Specimens were scanned (voxel size, 9.1 μm) for matching volumes and surface areas and post-treatment analyses. Root canal centering ability, canal geometry enlargement, and thickness of dentinal wall at inner curvature were assessed at apical level and point of maximum curvature. Results were analyzed with 4 one-way analyses of variance. RESULTS: Canal centering ability was superior in PG/PTN (P = .006 at apical level, P = .025 at point of maximum curvature). PG/PTN demonstrated a more conservative increase of canal areas (P = .027 at apical level, P = .038 at point of maximum curvature). Centrifugal increase in canal diameters did not significantly differ between groups (P = .65 at apical level, P = .61 at point of maximum curvature). Inner dentinal wall thickness was less reduced with PG/PTN compared with SR/BR, with no statistical differences (P = .23 at point of maximum curvature, P = .89 at apical level). PG/PTN shaping taper ranged between 6% and 7%. CONCLUSIONS: Neither system produced significant shaping errors in curved canals. PG/PTN system showed better preservation of canal anatomy. PTN offset section did not influence final preparation taper. Copyright © 2015 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

Micro-computed tomography evaluation of ProTaper next and BioRace shaping outcomes in maxillary first molar curved canals

PASQUALINI, Damiano
First
;
ALOVISI, MARIO;CEMENASCO, Andrea Francesco;SCOTTI, Nicola;BERUTTI, Elio
Last
2015-01-01

Abstract

The aim of this micro-computed tomography study was to describe the shaping properties of ProGlider/ProTaper Next (PG/PTN) and ScoutRace/BioRace (SR/BR) nickel-titanium rotary systems. METHODS: Thirty maxillary first permanent molars were selected. Mesiobuccal canals were randomly assigned (n = 15) to PG/PTN or SR/BR groups. Irrigation was performed with 5% NaOCl and 10% EDTA. Specimens were scanned (voxel size, 9.1 μm) for matching volumes and surface areas and post-treatment analyses. Root canal centering ability, canal geometry enlargement, and thickness of dentinal wall at inner curvature were assessed at apical level and point of maximum curvature. Results were analyzed with 4 one-way analyses of variance. RESULTS: Canal centering ability was superior in PG/PTN (P = .006 at apical level, P = .025 at point of maximum curvature). PG/PTN demonstrated a more conservative increase of canal areas (P = .027 at apical level, P = .038 at point of maximum curvature). Centrifugal increase in canal diameters did not significantly differ between groups (P = .65 at apical level, P = .61 at point of maximum curvature). Inner dentinal wall thickness was less reduced with PG/PTN compared with SR/BR, with no statistical differences (P = .23 at point of maximum curvature, P = .89 at apical level). PG/PTN shaping taper ranged between 6% and 7%. CONCLUSIONS: Neither system produced significant shaping errors in curved canals. PG/PTN system showed better preservation of canal anatomy. PTN offset section did not influence final preparation taper. Copyright © 2015 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
2015
41
10
1706
1710
http://www.elsevier.com/wps/find/journaldescription.cws_home/707230/description#description
BioRace; canal shaping; canal transportation; micro-CT; NiTi rotary instrument; ProTaper Next; Dentistry (all)
Pasqualini, D; Alovisi, M; Cemenasco, A; Mancini, L; Paolino, Ds; Bianchi, Cc; Roggia, A; Scotti, N; Berutti, E
File in questo prodotto:
File Dimensione Formato  
Pasqualini_Micro-computed tomography.pdf

Accesso riservato

Tipo di file: PDF EDITORIALE
Dimensione 739.07 kB
Formato Adobe PDF
739.07 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Micro computed tomography_postprint.pdf

Open Access dal 04/10/2016

Tipo di file: POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione 543.95 kB
Formato Adobe PDF
543.95 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1571192
Citazioni
  • ???jsp.display-item.citation.pmc??? 15
  • Scopus 51
  • ???jsp.display-item.citation.isi??? 43
social impact