Malmö University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Influence of Misfit on the Occurrence of Veneering Porcelain Fractures in Implant-Supported Metal-Ceramic Fixed Dental Prostheses: A Finite Element Analysis Replication of In Vitro Results
Univ Hong Kong, Fac Dent, Dept Implant Dent, Hong Kong, Peoples R China..
Malmö University, Faculty of Odontology (OD).ORCID iD: 0000-0002-3912-0830
Univ Hong Kong, Fac Dent, Dept Implant Dent, Hong Kong, Peoples R China..
2021 (English)In: International Journal of Prosthodontics, ISSN 0893-2174, E-ISSN 1139-9791, Vol. 34, no 4, p. 458-462Article in journal (Refereed) Published
Abstract [en]

Purpose: To investigate the impact of different extents of misfit between a restoration and the supporting implant on veneer fractures in screw-retained implant-supported metal-ceramic fixed dental prostheses (FDPs). Materials and Methods: A finite element analysis (FEA) model of a five-unit screw-retained metal- ceramic FDP supported by three implants was constructed, replicating a previous in vitro study. Eight different gap configurations at the single terminal implant, ranging from 0 to 150 μm, were tested. All setups were tested after clamping and with a load of 200 N applied. Maximum stress within the FDP was calculated. Results: The stress increased with each increase in misfit size above 30 μm, with the relationship between gap size and stress being linear up to 100-μm misfit. Above 100 μm, the stress increase accelerated. The stress pattern within the FDP changed with increasing gap size, confirming the findings of a previously conducted in vitro experiment for a misfit of 150 μm. Conclusion: The results of the FEA were in agreement with in vitro observations, validating the predictive value of FEA for technical complications. A misfit between an FDP and a supporting implant implies an increased risk of veneer fracture. Above a misfit of 30 μm, the stress levels are likely to be high enough to cause veneer fracture, and the risk increases disproportionately for misfit above 100 μm.

Place, publisher, year, edition, pages
Quintessence , 2021. Vol. 34, no 4, p. 458-462
National Category
Dentistry
Identifiers
URN: urn:nbn:se:mau:diva-49246DOI: 10.11607/ijp.6496ISI: 000731320200008PubMedID: 32588996Scopus ID: 2-s2.0-85115447010OAI: oai:DiVA.org:mau-49246DiVA, id: diva2:1625865
Available from: 2022-01-10 Created: 2022-01-10 Last updated: 2024-02-05Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedScopus

Authority records

Larsson, Christel

Search in DiVA

By author/editor
Larsson, Christel
By organisation
Faculty of Odontology (OD)
In the same journal
International Journal of Prosthodontics
Dentistry

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 26 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf