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- Publisher Website: 10.1016/j.dental.2018.03.017
- Scopus: eid_2-s2.0-85045125584
- PMID: 29653725
- WOS: WOS:000434463000001
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Article: Numerical fatigue analysis of premolars restored by CAD/CAM ceramic crowns
Title | Numerical fatigue analysis of premolars restored by CAD/CAM ceramic crowns |
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Authors | |
Keywords | Dental crowns CAD/CAM ceramics Finite element Numerical analysis Fatigue |
Issue Date | 2018 |
Publisher | Elsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dental |
Citation | Dental Materials, 2018, v. 34 n. 7, p. e149-e157 How to Cite? |
Abstract | Objectives:
The purpose of this study was to estimate the fatigue life of premolars restored with two dental ceramics, lithium disilicate (LD) and polymer infiltrated ceramic (PIC) using the numerical method and compare it with the published in vitro data.
Methods:
A premolar restored with full-coverage crown was digitized. The volumetric shape of tooth tissues and crowns were created in Mimics®. They were transferred to IA-FEMesh for mesh generation and the model was analyzed with Abaqus. By combining the stress distribution results with fatigue stress–life (S–N) approach, the lifetime of restored premolars was predicted.
Results:
The predicted lifetime was 1,231,318 cycles for LD with fatigue load of 1400 N, while the one for PIC was 475,063 cycles with the load of 870 N. The peak value of maximum principal stress occurred at the contact area (LD: 172 MPa and PIC: 96 MPa) and central fossa (LD: 100 MPa and PIC: 64 MPa) for both ceramics which were the most seen failure areas in the experiment. In the adhesive layer, the maximum shear stress was observed at the shoulder area (LD: 53.6 MPa and PIC: 29 MPa).
Significance:
The fatigue life and failure modes of all-ceramic crown determined by the numerical method seem to correlate well with the previous experimental study. |
Persistent Identifier | http://hdl.handle.net/10722/259136 |
ISSN | 2021 Impact Factor: 5.687 2020 SCImago Journal Rankings: 1.770 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Homaei, E | - |
dc.contributor.author | Jin, X | - |
dc.contributor.author | Pow, EHN | - |
dc.contributor.author | Matinlinna, JP | - |
dc.contributor.author | Tsoi, KH | - |
dc.contributor.author | Farhangdoost, K | - |
dc.date.accessioned | 2018-09-03T04:02:04Z | - |
dc.date.available | 2018-09-03T04:02:04Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Dental Materials, 2018, v. 34 n. 7, p. e149-e157 | - |
dc.identifier.issn | 0109-5641 | - |
dc.identifier.uri | http://hdl.handle.net/10722/259136 | - |
dc.description.abstract | Objectives: The purpose of this study was to estimate the fatigue life of premolars restored with two dental ceramics, lithium disilicate (LD) and polymer infiltrated ceramic (PIC) using the numerical method and compare it with the published in vitro data. Methods: A premolar restored with full-coverage crown was digitized. The volumetric shape of tooth tissues and crowns were created in Mimics®. They were transferred to IA-FEMesh for mesh generation and the model was analyzed with Abaqus. By combining the stress distribution results with fatigue stress–life (S–N) approach, the lifetime of restored premolars was predicted. Results: The predicted lifetime was 1,231,318 cycles for LD with fatigue load of 1400 N, while the one for PIC was 475,063 cycles with the load of 870 N. The peak value of maximum principal stress occurred at the contact area (LD: 172 MPa and PIC: 96 MPa) and central fossa (LD: 100 MPa and PIC: 64 MPa) for both ceramics which were the most seen failure areas in the experiment. In the adhesive layer, the maximum shear stress was observed at the shoulder area (LD: 53.6 MPa and PIC: 29 MPa). Significance: The fatigue life and failure modes of all-ceramic crown determined by the numerical method seem to correlate well with the previous experimental study. | - |
dc.language | eng | - |
dc.publisher | Elsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dental | - |
dc.relation.ispartof | Dental Materials | - |
dc.subject | Dental crowns | - |
dc.subject | CAD/CAM ceramics | - |
dc.subject | Finite element | - |
dc.subject | Numerical analysis | - |
dc.subject | Fatigue | - |
dc.title | Numerical fatigue analysis of premolars restored by CAD/CAM ceramic crowns | - |
dc.type | Article | - |
dc.identifier.email | Pow, EHN: ehnpow@hku.hk | - |
dc.identifier.email | Matinlinna, JP: jpmat@hku.hk | - |
dc.identifier.email | Tsoi, KH: jkhtsoi@hku.hk | - |
dc.identifier.authority | Pow, EHN=rp00030 | - |
dc.identifier.authority | Matinlinna, JP=rp00052 | - |
dc.identifier.authority | Tsoi, KH=rp01609 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.dental.2018.03.017 | - |
dc.identifier.pmid | 29653725 | - |
dc.identifier.scopus | eid_2-s2.0-85045125584 | - |
dc.identifier.hkuros | 288020 | - |
dc.identifier.volume | 34 | - |
dc.identifier.issue | 7 | - |
dc.identifier.spage | e149 | - |
dc.identifier.epage | e157 | - |
dc.identifier.isi | WOS:000434463000001 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0109-5641 | - |