Laboratory Assessment of Fracture Resistance of Endodontically Treated Teeth Restored With Three Different Post and Core Systems
Background and Aim : Prefabricated posts are advantageous in restoring endodontically treated teeth because of their lower cost and operation time. Since selecting a suitable restoration is important in the survival of these teeth, in this study fracture resistance and the mode of failure of endodon...
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| Format: | Article |
| Language: | English |
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Islamic Dental Association of Iran
2012-07-01
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| Series: | Journal of Islamic Dental Association of Iran |
| Subjects: | |
| Online Access: | http://jidai.ir/browse.php?a_code=A-10-1-615&slc_lang=en&sid=1 |
| _version_ | 1818852595836387328 |
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| author | ladan Ranjbar Omrani Esmaeil Yassini Mansoreh Mirzaei Mehdi Abbasi Nima Baniasad Hamid Kermanshah |
| author_facet | ladan Ranjbar Omrani Esmaeil Yassini Mansoreh Mirzaei Mehdi Abbasi Nima Baniasad Hamid Kermanshah |
| author_sort | ladan Ranjbar Omrani |
| collection | DOAJ |
| description | Background and Aim : Prefabricated posts are advantageous in restoring endodontically treated teeth because of their lower cost and operation time. Since selecting a suitable restoration is important in the survival of these teeth, in this study fracture resistance and the mode of failure of endodontically treated teeth restored with three different post and core systems were evaluated .
Materials and Methods : In this in vitro study, 36 human premolars were divided into three groups namely, group 1, non precious cast post and core group 2, prefabricated metal post with amalgam core group 3, FRC post and composite core. All groups received crowning. Specimens were thermocycled and loaded until definite failure. The fracture resistance and failure modes were analyzed with one way ANOVA and Fisher Exact tests .
Results: The mean failure load for the three groups was 794, 647 and 724 N, respectively. Statistical analysis did not show any significant differences between the fracture resistance of the three experimental groups (P=0.0579). All failures in group 1, eight in group 2 and three in group 3, were unrestorable. Fisher’s Exact test showed significant difference between group 3 and the two other groups (P<0.05 ).
Conclusion : If there is a 2-mm ferrule, the type of post and core does not have a significant effect on the fracture resistance, but it has a significant effect on the failure mode . |
| first_indexed | 2024-12-19T07:23:25Z |
| format | Article |
| id | doaj.art-097d298b0e5e458e91b1a513655d3757 |
| institution | Directory Open Access Journal |
| issn | 2383-3041 2383-3041 |
| language | English |
| last_indexed | 2024-12-19T07:23:25Z |
| publishDate | 2012-07-01 |
| publisher | Islamic Dental Association of Iran |
| record_format | Article |
| series | Journal of Islamic Dental Association of Iran |
| spelling | doaj.art-097d298b0e5e458e91b1a513655d37572022-12-21T20:30:53ZengIslamic Dental Association of IranJournal of Islamic Dental Association of Iran2383-30412383-30412012-07-0124395100Laboratory Assessment of Fracture Resistance of Endodontically Treated Teeth Restored With Three Different Post and Core Systemsladan Ranjbar Omrani0Esmaeil Yassini1Mansoreh Mirzaei2Mehdi Abbasi3Nima Baniasad4Hamid Kermanshah5 Assistant Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran. Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran Assistant Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran. Assistant Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran. Dentist Assistant Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran Background and Aim : Prefabricated posts are advantageous in restoring endodontically treated teeth because of their lower cost and operation time. Since selecting a suitable restoration is important in the survival of these teeth, in this study fracture resistance and the mode of failure of endodontically treated teeth restored with three different post and core systems were evaluated . Materials and Methods : In this in vitro study, 36 human premolars were divided into three groups namely, group 1, non precious cast post and core group 2, prefabricated metal post with amalgam core group 3, FRC post and composite core. All groups received crowning. Specimens were thermocycled and loaded until definite failure. The fracture resistance and failure modes were analyzed with one way ANOVA and Fisher Exact tests . Results: The mean failure load for the three groups was 794, 647 and 724 N, respectively. Statistical analysis did not show any significant differences between the fracture resistance of the three experimental groups (P=0.0579). All failures in group 1, eight in group 2 and three in group 3, were unrestorable. Fisher’s Exact test showed significant difference between group 3 and the two other groups (P<0.05 ). Conclusion : If there is a 2-mm ferrule, the type of post and core does not have a significant effect on the fracture resistance, but it has a significant effect on the failure mode .http://jidai.ir/browse.php?a_code=A-10-1-615&slc_lang=en&sid=1ReconstructionEndodontically treated teethPost and coreFracture resistance |
| spellingShingle | ladan Ranjbar Omrani Esmaeil Yassini Mansoreh Mirzaei Mehdi Abbasi Nima Baniasad Hamid Kermanshah Laboratory Assessment of Fracture Resistance of Endodontically Treated Teeth Restored With Three Different Post and Core Systems Journal of Islamic Dental Association of Iran Reconstruction Endodontically treated teeth Post and core Fracture resistance |
| title | Laboratory Assessment of Fracture Resistance of Endodontically Treated Teeth Restored With Three Different Post and Core Systems |
| title_full | Laboratory Assessment of Fracture Resistance of Endodontically Treated Teeth Restored With Three Different Post and Core Systems |
| title_fullStr | Laboratory Assessment of Fracture Resistance of Endodontically Treated Teeth Restored With Three Different Post and Core Systems |
| title_full_unstemmed | Laboratory Assessment of Fracture Resistance of Endodontically Treated Teeth Restored With Three Different Post and Core Systems |
| title_short | Laboratory Assessment of Fracture Resistance of Endodontically Treated Teeth Restored With Three Different Post and Core Systems |
| title_sort | laboratory assessment of fracture resistance of endodontically treated teeth restored with three different post and core systems |
| topic | Reconstruction Endodontically treated teeth Post and core Fracture resistance |
| url | http://jidai.ir/browse.php?a_code=A-10-1-615&slc_lang=en&sid=1 |
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