Adhesion to root canal dentine using one and two-step adhesives with dual-cure composite core materials

summary  The regional tensile bond strengths of two dual‐cure composite resin core materials to root canal dentine using either a one or two‐step self‐etching adhesive were evaluated. Extracted premolar teeth were decoronated and their root canals prepared to a depth of 8 mm and a width of 1·4 mm. I...

Full description

Saved in:
Bibliographic Details
Published in:Journal of oral rehabilitation 2005-02, Vol.32 (2), p.97-104
Main Authors: FOXTON, R. M., NAKAJIMA, M., TAGAMI, J., MIURA, H.
Format: Article
Language:English
Subjects:
adhesion
adhesives
Bicuspid - ultrastructure
Composite Resins - chemistry
core materials
Dental Bonding - methods
Dentin
Dentin-Bonding Agents - chemistry
Dentistry
Humans
Materials Testing - methods
Methacrylates
Microscopy, Electron, Scanning
Resin Cements - chemistry
Root Canal Therapy - methods
root dentine
Tensile Strength
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:summary  The regional tensile bond strengths of two dual‐cure composite resin core materials to root canal dentine using either a one or two‐step self‐etching adhesive were evaluated. Extracted premolar teeth were decoronated and their root canals prepared to a depth of 8 mm and a width of 1·4 mm. In one group, a one‐step self‐etching adhesive (Unifil Self‐etching Bond) was applied to the walls of the post‐space and light‐cured for 10 s. After which, the post‐spaces were filled with the a dual‐cure composite resin (Unifil Core) and then half the specimens were light‐cured for 60 s and the other half placed in darkness for 30 min. In the second group, a self‐etching primer (ED Primer II) was applied for 30 s, followed by an adhesive resin (Clearfil Photo Bond), which was light‐cured for 10 s. The post‐spaces were filled with a dual‐cure composite resin (DC Core) and then half the specimens were light‐cured for 60 s and the other half placed in darkness for 30 min. Chemical‐cure composite resin was placed on the outer surfaces of all the roots, which were then stored in water for 24 h. They were serially sliced perpendicular to the bonded interface into 8, 0·6 mm‐thick slabs, and then transversely sectioned into beams, approximately 8 × 0·6 × 0·6 mm, for the microtensile bond strength test (μTBS). Data were divided into two (coronal/apical half of post‐space) and analysed using three‐way anova and Scheffe's test (P  0·05). In addition, both dual‐cure composite resins exhibited no significant differences in μTBS irrespective of whether polymerization was chemically or photoinitiated (P > 0·05). Both dual‐cure composite resins exhibited good bonding to root canal dentin, which was not dependent upon region or mode of polymerization.
ISSN:0305-182X
1365-2842
DOI:10.1111/j.1365-2842.2004.01404.x