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The fracture strength and the failure mode of lithium disilicate or resin nano ceramics as a crown, overlay, or endocrown restoration on endodontically treated teeth
Department of Oral Health Sciences, Reconstructive Dentistry, Faculty of medicine and Health Sciences Ghent University Ghent Belgium.ORCID-id: 0000-0002-4167-3020
Malmö universitet, Odontologiska fakulteten (OD).ORCID-id: 0000-0001-6693-8278
Department of Oral Health Sciences, Reconstructive Dentistry, Faculty of medicine and Health Sciences Ghent University Ghent Belgium.
Department of Dentistry, Radboud Institute for Health Sciences Radboud University Medical Centre Nijmegen The Netherlands.
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2024 (engelsk)Inngår i: Journal of Esthetic and Restorative Dentistry, ISSN 1496-4155, E-ISSN 1708-8240, Vol. 36, nr 5, s. 796-803Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Introduction

Different materials and restorative concepts have been proposed over the years to restore endodontically treated teeth (ETT). Monolithic ceramic and composite restoration can be lute to the tooh, without the use of a post. However, little is known how the material stiffness and presence of a composite core will affect the survival and failure mode.

The objective of this in-vitro study was to evaluate the fracture strength and failure mode of endodontically treated molars, restored with ceramic or hybrid composite monolithic restoration, in the presence of absence of a composite core.

Materials and Methods

Sixty depulped molars were restored with a lithium-disilicate (e.max CAD) or hybrid composite (Cerasmart) restoration. Both materials were used in a monolithic approach, but with 3 different designs: (a) monolithic endocrown, (b) crown with a separate composite core, and (c) overlay without core buildup or pulpal extension. Ten sound teeth were used as control group. All groups were thermocycled (10,000 cycles), subsequently loaded in a chewing simulator (100,000 cycles) and finally loaded until fracture.

Results

Peak fracture loads and failure modes were registered. No significant differences were seen between the groups in terms of fracture load. Failure modes were statistically significantly different among groups with significant correlation between restoration type and material. (p < 0.001 and p = 0.033, respectively). No group presented significantly higher fracture resistance. Although ceramic crowns and overlays presented the highest repairability, all restored ETT were within the range of the intact tooth' fracture strength.

Conclusion

No restoration presented significant different fracture loads. However, the type of restoration and material choice were correlated to the fracture mode.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2024. Vol. 36, nr 5, s. 796-803
Emneord [en]
digital workflow, lithium disilicate, resin nano ceramic, hybrid composite, short fiber-reinforced composite, endocrown, full coverage crown, overlay
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Identifikatorer
URN: urn:nbn:se:mau:diva-64813DOI: 10.1111/jerd.13187ISI: 001133338400001PubMedID: 38152852Scopus ID: 2-s2.0-85180870909OAI: oai:DiVA.org:mau-64813DiVA, id: diva2:1823300
Tilgjengelig fra: 2024-01-02 Laget: 2024-01-02 Sist oppdatert: 2024-05-21bibliografisk kontrollert

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Vervack, ValentinJohansson, CamillaPapia, EvaggeliaVandeweghe, Stefan
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