Effect of three different veneering techniques on the stress distribution and in vitro fatigue behavior of core-veneer all-ceramic fixed partial dentures
| Autor: | João Paulo Mendes Tribst, A.K.F. Costa, Alana Barbosa Alves Pinto, Alexandre Luiz Souto Borges, Amanda Maria de Oliveira Dal Piva |
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| Přispěvatelé: | Universidade Estadual Paulista (UNESP), Oral Regenerative Medicine (ORM) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Dental materials medicine.medical_treatment Isotropy Linear elasticity Finite element analysis Computer-aided design RK1-715 finite element analysis Stress distribution Finite element method computer-aided design Core (optical fiber) medicine.anatomical_structure Dentistry Dentin medicine Premolar dental materials Veneer Original Article fatigue Composite material General Dentistry Fatigue |
| Zdroj: | Journal of Dental Research, Dental Clinics, Dental Prospects, Vol 15, Iss 3, Pp 188-196 (2021) Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Journal of Dental Research, Dental Clinics, Dental Prospects, 15(3), 188-196. Tabriz University of Medical Sciences Faculty of Dentistry Borges, A L S, Costa, A K F, Dal Piva, A M D O, Pinto, A B A & Tribst, J P M 2021, ' Effect of three different veneering techniques on the stress distribution and in vitro fatigue behavior of core-veneer all-ceramic fixed partial dentures ', Journal of Dental Research, Dental Clinics, Dental Prospects, vol. 15, no. 3, pp. 188-196 . https://doi.org/10.34172/JODDD.2021.032 Journal of Dental Research, Dental Clinics, Dental Prospects |
| ISSN: | 2008-2118 2008-210X |
| DOI: | 10.34172/JODDD.2021.032 |
| Popis: | Made available in DSpace on 2022-05-01T10:18:56Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-06-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Background. The present study aimed to evaluate the influence of the veneering technique on the tensile stress distribution and survival of full-ceramic fixed dental prostheses (FDPs). Methods. A three-dimensional model of an FDP was modeled on a second premolar and a second molar with a pontic between them for finite element analysis (FEA). The groups were divided according to the veneering technique: conventional stratification, rapid layer, and CAD-on techniques. A mesh control test determined the number of elements and nodes. The materials’ properties were attributed to each solid component with isotropic, homogeneous, and linear elastic behavior. For the in vitro fatigue test (n = 30), the FDPs were cemented on dentin analog abutments and submitted to 2×106 mechanical cycles (100 N at 3 Hz). Results. Maximum principal stress showed that the connector between the pontic and the second molar concentrated higher stresses, regardless of the techniques: Rapid layer (6 MPa) > CAD-on (5.5 MPa) > conventional stratification (4 MPa). The conventional stratification technique concentrated high stresses at the interface between the framework and veneering ceramic (2 MPa), followed by the rapid layer (1.8 MPa) and CAD-on (1.5 MPa) techniques. The crowns fabricated using the rapid layer and CAD-on techniques exhibited a 100% survival rate, while the conventional stratification group had 0% survival. Conclusion. Even with similar stress distribution between the veneering techniques, the conventional stratification technique was more prone to failure under fatigue due to higher defects incorporated than CAD-on and rapid layer techniques. Department of Dental Materials and Prosthodontics São Paulo State University Institute of Science and Technology Department of Dental Materials and Prosthodontics São Paulo State University Institute of Science and Technology FAPESP: 12/11095-0 FAPESP: 14/00668-4 |
| Databáze: | OpenAIRE |
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