Finite Element Analysis of the Influence of Geometry and Design of Zirconia Crowns on Stress Distribution

Anami, Lilian Costa; Lima, Júlia Magalhães da Costa; Corazza, Pedro Henrique; Yamamoto, Eron Toshio Colauto; Bottino, Marco Antônio; Borges, Alexandre Luiz Souto

doi:10.1111/jopr.12175

Cited by 20 publications

(16 citation statements)

References 40 publications

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“…However, the influence on the stress level of this resilience was negligible for the abutment teeth of single restorations . Numerically, no difference between the cylindrical crown model and the anatomical crown model was observed for the maximum principal stress values , and only a slight difference was found at the level of the cement layer . However, the values observed here should not be directly compared with other non‐computational laboratory findings; rather, they should be compared with each other in the analysis .…”

Section: Discussionmentioning

confidence: 73%

“…Numerically, no difference between the cylindrical crown model and the anatomical crown model was observed for the maximum principal stress values , and only a slight difference was found at the level of the cement layer . However, the values observed here should not be directly compared with other non‐computational laboratory findings; rather, they should be compared with each other in the analysis . The main purpose of this study was to evaluate the influence of different finish line designs and abutment materials on the stress distribution of bilayer and monolithic zirconia crowns.…”

Section: Discussionmentioning

confidence: 84%

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Effect of finish line design on stress distribution in bilayer and monolithic zirconia crowns: a three‐dimensional finite element analysis study

Miura

Kasahara

Yamauchi

et al. 2018

European J Oral Sciences

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This study evaluated the influence of different finish line designs and abutment materials on the stress distribution of bilayer and monolithic zirconia crowns using three-dimensional finite element analysis (FEA). Three-dimensional models of two types of zirconia premolars - a yttria-stabilized zirconia framework with veneering ceramic and a monolithic zirconia ceramic - were used in the analysis. Cylindrical models with the finish line design of the crown abutments were prepared with three types of margin curvature radius (CR): CR = 0 (CR0; shoulder margin), CR = 0.5 (CR0.5; rounded shoulder margin), and CR = 1.0 (CR1.0; deep chamfer margin). Two abutment materials (dentin and brass) were analyzed. In the FEA model, 1 N was loaded perpendicular to the occlusal surface at the center of the crown, and linear static analysis was performed. For all crowns, stress was localized to the occlusal loading area as well as to the axial walls of the proximal region. The lowest maximum principal stress values were observed when the dentin abutment with CR0.5 was used under a monolithic zirconia crown. These results suggest that the rounded shoulder margin and deep chamfer margin, in combination with a monolithic zirconia crown, potentially have optimal geometry to minimize occlusal stress.

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Section: Discussionmentioning

confidence: 73%

Section: Discussionmentioning

confidence: 84%

Effect of finish line design on stress distribution in bilayer and monolithic zirconia crowns: a three‐dimensional finite element analysis study

Miura

Kasahara

Yamauchi

et al. 2018

European J Oral Sciences

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Section: Measurement Of Residual Stressesmentioning

confidence: 99%

“…and assisting in all experimental approaches, is the numeric approximation of the problem using finite element (FE) models [44,47,82,[99][100][101][102]. The major advantage of this tool is the simulation of dynamic thermal or mechanical processes as they happen during sintering or intraoral mastication [82,100]. Also unique to this method is its application to individual geometries, allowing for research findings on planar structures to be extrapolated to curved and thus more clinically realistic geometries [12,99,103,104].…”

Section: Measurement Of Residual Stressesmentioning

confidence: 99%

ADM guidance-Ceramics: all-ceramic multilayer interfaces in dentistry

et al. 2017

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“…One factor in avoiding technical failures includes a framework design adequate to support the veneering ceramic . Increasing the amount of zirconia in FPDs and improving the support of the veneering ceramic could improve the stress distribution internally . In order to avoid failure, clinical applications need framework designs that will prevent stress from concentrating at of the zirconia‐veneering ceramic interface.…”

mentioning

confidence: 99%

Three‐dimensional finite element analysis of zirconia all‐ceramic cantilevered fixed partial dentures with different framework designs

Miura

Kasahara

Yamauchi

et al. 2017

European J Oral Sciences

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The purpose of this study were: to perform stress analyses using three-dimensional finite element analysis methods; to analyze the mechanical stress of different framework designs; and to investigate framework designs that will provide for the long-term stability of both cantilevered fixed partial dentures (FPDs) and abutment teeth. An analysis model was prepared for three units of cantilevered FPDs that assume a missing mandibular first molar. Four types of framework design (Design 1, basic type; Design 2, framework width expanded buccolingually by 2 mm; Design 3, framework height expanded by 0.5 mm to the occlusal surface side from the end abutment to the connector area; and Design 4, a combination of Designs 2 and 3) were created. Two types of framework material (yttrium-oxide partially stabilized zirconia and a high precious noble metal gold alloy) and two types of abutment material (dentin and brass) were used. In the framework designs, Design 1 exhibited the highest maximum principal stress value for both zirconia and gold alloy. In the abutment tooth, Design 3 exhibited the highest maximum principal stress value for all abutment teeth. In the present study, Design 4 (the design with expanded framework height and framework width) could contribute to preventing the concentration of stress and protecting abutment teeth.

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Finite Element Analysis of the Influence of Geometry and Design of Zirconia Crowns on Stress Distribution

Cited by 20 publications

References 40 publications

Effect of finish line design on stress distribution in bilayer and monolithic zirconia crowns: a three‐dimensional finite element analysis study

Effect of finish line design on stress distribution in bilayer and monolithic zirconia crowns: a three‐dimensional finite element analysis study

ADM guidance-Ceramics: all-ceramic multilayer interfaces in dentistry

Three‐dimensional finite element analysis of zirconia all‐ceramic cantilevered fixed partial dentures with different framework designs

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