micro-computed tomography and bond strength analysis of different root canal filling techniques
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2014
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Abstract
Introduction: The aim of this study was to evaluate the quality and bond strength of three root filling techniques (lateral compaction, continuous wave of condensation and Tagger′s Hybrid technique [THT]) using micro-computed tomography (CT) images and push-out tests, respectively. Materials and Methods: Thirty mandibular incisors were prepared using the same protocol and randomly divided into three groups (n = 10): Lateral condensation technique (LCT), continuous wave of condensation technique (CWCT), and THT. All specimens were filled with Gutta-percha (GP) cones and AH Plus sealer. Five specimens of each group were randomly chosen for micro-CT analysis and all of them were sectioned into 1 mm slices and subjected to push-out tests. Results: Micro-CT analysis revealed less empty spaces when GP was heated within the root canals in CWCT and THT when compared to LCT. Push-out tests showed that LCT and THT had a significantly higher displacement resistance (P < 0.05) when compared to the CWCT. Bond strength was lower in apical and middle thirds than in the coronal thirds. Conclusions: It can be concluded that LCT and THT were associated with higher bond strengths to intraradicular dentine than CWCT. However, LCT was associated with more empty voids than the other techniques.
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nhata2014indianmicro-computed
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| Authors | ;Juliane Nhata;Ricardo Machado;Luiz Pascoal Vansan;Antonio Batista;Gilson Sidney;Tiago Pereira Rosa;Emmanuel João Nogueira Leal Silva |
| Journal | Applied and environmental microbiology |
| Year | 2014 |
| DOI |
10.4103/0970-9290.152164
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