Resin cement thickness in oval-shaped canals: Oval vs. circular fiber posts in combination with different tips/drills for post space preparation


Autoria(s): CONIGLIO, Ivanovic; GARCIA-GODOY, Franklin; MAGNI, Elisa; CARVALHO, Carlos Augusto; FERRARI, Marco
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

19/10/2012

19/10/2012

2009

Resumo

Purpose: To evaluate the cement thickness around oval and circular posts luted in oval post spaces prepared with different drills/tips. Methods: Extracted premolars were endodontically treated and obturated, then randomly divided into three groups (n = 5) according to the tips/drills used for post-space preparation and to the type of fiber post luted: medium grit oval tip + oval posts, fine grit oval tip + oval posts, Mtwo Post File drill + circular posts. The specimens were sectioned in horizontal slices; one slice per canal third was chosen for each post-space, resulting in three slices for each specimen. The distances between the canal wall and the post perimeter were measured on SEM images of each slice. Results: The fine grit tip + oval post group obtained statistically significant lower cement thicknesses than the other groups (P < 0.05), in particular in the apical third. The MtwoPF + circular post group showed the highest cement thickness, comparable to that of the medium tip + oval post group. A good post fitting in oval-shaped canals can be obtained using a fine grit oval tip combined with oval posts. (Am J Dent 2009;22:290-294).

Identificador

AMERICAN JOURNAL OF DENTISTRY, v.22, n.5, p.290-294, 2009

0894-8275

http://producao.usp.br/handle/BDPI/26138

http://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=EndNote&UT=000273958100009&Init=Yes&SrcAuth=ResearchSoft&mode=FullRecord

Idioma(s)

eng

Publicador

MOSHER & LINDER, INC

Relação

American Journal of Dentistry

Direitos

closedAccess

Copyright MOSHER & LINDER, INC

Palavras-Chave #ENDODONTICALLY TREATED TEETH #CLINICAL-PERFORMANCE #ROOT CANALS #INSTRUMENTS #STRENGTH #DENTIN #LAYER #HAND #Dentistry, Oral Surgery & Medicine
Tipo

article

original article

publishedVersion