Effect of different restorative design on stress concentration of lithium disilicate and monolithic zirconia endocrown on a mandibular molar - a finite element analysis
Abstract Background The purpose of this simulation study was to evaluate effect of different restorative design on stress concentration of endocrown. Different restorative materials were used on a mandibular molar using a finite element analysis. Methods A 3D FEA model of mandibular molar was constr...
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BMC
2025-02-01
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| Series: | BMC Oral Health |
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| Online Access: | https://doi.org/10.1186/s12903-024-05358-4 |
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| author | Garima Karn Manoj Shetty Chethan Hegde |
| author_facet | Garima Karn Manoj Shetty Chethan Hegde |
| author_sort | Garima Karn |
| collection | DOAJ |
| description | Abstract Background The purpose of this simulation study was to evaluate effect of different restorative design on stress concentration of endocrown. Different restorative materials were used on a mandibular molar using a finite element analysis. Methods A 3D FEA model of mandibular molar was constructed using the average values and was used in this analysis. 2 materials were used which were lithium disilicate and zirconia and 2 different margin design of knife edge and shoulder margins were used in various combinations of material and margin design. A constant 12° of internal wall angulation was considered for all the 4 models and a uniform cement thicknes of 100 μm was considered. A uniform 2 mm of bulk fill composite was used as a base beneath the endocrowns. 300 N load was applied on the cusps for each model and linear static analysis was carried out. Results Endocrowns of lithium disilicate was found to exert a greater stress concentration in comparison to zirconia endocrowns in both the margin designs of knife edge and shoulder. Knife edge margins were seen to yield greater stress concentration on the remaining tooth structure in comparison to shoulder margins in endocrowns of both the materials used. Conclusion There is a positive influence of margin design selection within the same material used for the fabrication of endocrown. |
| format | Article |
| id | doaj-art-2e6664372d3540a49b7fda856673dc74 |
| institution | Kabale University |
| issn | 1472-6831 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | BMC |
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| series | BMC Oral Health |
| spelling | doaj-art-2e6664372d3540a49b7fda856673dc742025-02-09T12:57:27ZengBMCBMC Oral Health1472-68312025-02-012511810.1186/s12903-024-05358-4Effect of different restorative design on stress concentration of lithium disilicate and monolithic zirconia endocrown on a mandibular molar - a finite element analysisGarima Karn0Manoj Shetty1Chethan Hegde2Department of Prosthodontics, Crown and Bridge, A. B. Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University DerlakatteDepartment of Prosthodontics, Crown and Bridge, A. B. Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University DerlakatteDepartment of Prosthodontics, Crown and Bridge, A. B. Shetty Memorial Institute of Dental Sciences, NITTE Deemed to be University DerlakatteAbstract Background The purpose of this simulation study was to evaluate effect of different restorative design on stress concentration of endocrown. Different restorative materials were used on a mandibular molar using a finite element analysis. Methods A 3D FEA model of mandibular molar was constructed using the average values and was used in this analysis. 2 materials were used which were lithium disilicate and zirconia and 2 different margin design of knife edge and shoulder margins were used in various combinations of material and margin design. A constant 12° of internal wall angulation was considered for all the 4 models and a uniform cement thicknes of 100 μm was considered. A uniform 2 mm of bulk fill composite was used as a base beneath the endocrowns. 300 N load was applied on the cusps for each model and linear static analysis was carried out. Results Endocrowns of lithium disilicate was found to exert a greater stress concentration in comparison to zirconia endocrowns in both the margin designs of knife edge and shoulder. Knife edge margins were seen to yield greater stress concentration on the remaining tooth structure in comparison to shoulder margins in endocrowns of both the materials used. Conclusion There is a positive influence of margin design selection within the same material used for the fabrication of endocrown.https://doi.org/10.1186/s12903-024-05358-4EndocrownLithium disilicateZirconiaEndodontically treated teethKnife edge marginsShoulder margins |
| spellingShingle | Garima Karn Manoj Shetty Chethan Hegde Effect of different restorative design on stress concentration of lithium disilicate and monolithic zirconia endocrown on a mandibular molar - a finite element analysis BMC Oral Health Endocrown Lithium disilicate Zirconia Endodontically treated teeth Knife edge margins Shoulder margins |
| title | Effect of different restorative design on stress concentration of lithium disilicate and monolithic zirconia endocrown on a mandibular molar - a finite element analysis |
| title_full | Effect of different restorative design on stress concentration of lithium disilicate and monolithic zirconia endocrown on a mandibular molar - a finite element analysis |
| title_fullStr | Effect of different restorative design on stress concentration of lithium disilicate and monolithic zirconia endocrown on a mandibular molar - a finite element analysis |
| title_full_unstemmed | Effect of different restorative design on stress concentration of lithium disilicate and monolithic zirconia endocrown on a mandibular molar - a finite element analysis |
| title_short | Effect of different restorative design on stress concentration of lithium disilicate and monolithic zirconia endocrown on a mandibular molar - a finite element analysis |
| title_sort | effect of different restorative design on stress concentration of lithium disilicate and monolithic zirconia endocrown on a mandibular molar a finite element analysis |
| topic | Endocrown Lithium disilicate Zirconia Endodontically treated teeth Knife edge margins Shoulder margins |
| url | https://doi.org/10.1186/s12903-024-05358-4 |
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