Pull-out bond strength of a fibre-reinforced composite post system luted with self-adhesive resin cements
Copyright © 2013 Elsevier Ltd. All rights reserved..
OBJECTIVES: Due to morphological differences along the root canal, serious structural damage, or extensive endodontic preparation, cement thickness of luted fibre-reinforced composite (FRC) post systems can largely vary. This study aimed at evaluating the effects of a self-etch (Multilink Automix, MLA) and various self-adhesive resin cements (G-Cem, GCM; Maxcem Elite, MXE; RelyX Unicem, RLX; SmartCem 2, SMC) on the pull-out bond strengths of FRC posts to root canal dentine, and to compare the effects of different cementation thicknesses.
METHODS: 100 bovine incisor roots were embedded in acrylic resin and randomly assigned to two groups. Root canals of group 1 were prepared with RelyX Fiber Post drill size one (Ø 1.3mm), whereas in group 2 drill size three (Ø 1.9mm) was used to attain different cement thicknesses (thicknesses 1 and 2). Each group was then subdivided into five subgroups (n=10). RelyX Fiber Posts size one (Ø 0.70mm) were luted with the respective resin cements. All specimens were subjected to pull-out evaluation using a universal testing machine. Post surface areas covered with cement were measured by means of stereomicroscopy.
RESULTS: RLX revealed the significantly highest pull-out bond strengths in both groups (p<0.05), while MXE exhibited the significantly lowest pull-out bond strengths in group 2 (p<0.05). Main failure modes were determined as adhesive at the cement-post surface for all examined groups (except for SMC, group 2).
CONCLUSIONS: The different resin cements influenced the pull-out bond strengths, whereas the cement thickness itself was not responsible for any differences.
CLINICAL SIGNIFICANCE: Self-adhesive resin cements can provide an acceptable retention of FRC posts even in case of use with wider post space conditions.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2013 |
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Erschienen: |
2013 |
Enthalten in: |
Zur Gesamtaufnahme - volume:41 |
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Enthalten in: |
Journal of dentistry - 41(2013), 11 vom: 15. Nov., Seite 1020-6 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Nova, Vassiliki [VerfasserIn] |
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Links: |
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Anmerkungen: |
Date Completed 16.10.2015 Date Revised 17.03.2022 published: Print-Electronic Citation Status MEDLINE |
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doi: |
10.1016/j.jdent.2013.08.011 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM230610552 |
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520 | |a Copyright © 2013 Elsevier Ltd. All rights reserved. | ||
520 | |a OBJECTIVES: Due to morphological differences along the root canal, serious structural damage, or extensive endodontic preparation, cement thickness of luted fibre-reinforced composite (FRC) post systems can largely vary. This study aimed at evaluating the effects of a self-etch (Multilink Automix, MLA) and various self-adhesive resin cements (G-Cem, GCM; Maxcem Elite, MXE; RelyX Unicem, RLX; SmartCem 2, SMC) on the pull-out bond strengths of FRC posts to root canal dentine, and to compare the effects of different cementation thicknesses | ||
520 | |a METHODS: 100 bovine incisor roots were embedded in acrylic resin and randomly assigned to two groups. Root canals of group 1 were prepared with RelyX Fiber Post drill size one (Ø 1.3mm), whereas in group 2 drill size three (Ø 1.9mm) was used to attain different cement thicknesses (thicknesses 1 and 2). Each group was then subdivided into five subgroups (n=10). RelyX Fiber Posts size one (Ø 0.70mm) were luted with the respective resin cements. All specimens were subjected to pull-out evaluation using a universal testing machine. Post surface areas covered with cement were measured by means of stereomicroscopy | ||
520 | |a RESULTS: RLX revealed the significantly highest pull-out bond strengths in both groups (p<0.05), while MXE exhibited the significantly lowest pull-out bond strengths in group 2 (p<0.05). Main failure modes were determined as adhesive at the cement-post surface for all examined groups (except for SMC, group 2) | ||
520 | |a CONCLUSIONS: The different resin cements influenced the pull-out bond strengths, whereas the cement thickness itself was not responsible for any differences | ||
520 | |a CLINICAL SIGNIFICANCE: Self-adhesive resin cements can provide an acceptable retention of FRC posts even in case of use with wider post space conditions | ||
650 | 4 | |a Comparative Study | |
650 | 4 | |a Journal Article | |
650 | 4 | |a Cement thickness | |
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650 | 4 | |a Pull-out test | |
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