In-Vitro Comparison of Fracture Strength of Endocrowns and Overlays in Endodontically Treated Teeth Manufactured with Monolithic Lithium Disilicate and Zirconia
To evaluate the fracture strength and the failure mode of endodontically treated molars restored with monolithic lithium disilicate and zirconia endocrowns and overlays. A total of 48 extracted mandibular molars were endodontically treated, decoronated 2 mm above the cementoenamel junction and divid...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Journal of Functional Biomaterials |
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| Online Access: | https://www.mdpi.com/2079-4983/14/8/422 |
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| author | Maya Veselinova Sofia Diamantopoulou Chariklia Paximada Efstratios Papazoglou |
| author_facet | Maya Veselinova Sofia Diamantopoulou Chariklia Paximada Efstratios Papazoglou |
| author_sort | Maya Veselinova |
| collection | DOAJ |
| description | To evaluate the fracture strength and the failure mode of endodontically treated molars restored with monolithic lithium disilicate and zirconia endocrowns and overlays. A total of 48 extracted mandibular molars were endodontically treated, decoronated 2 mm above the cementoenamel junction and divided into four 12-specimen groups. Group ELD: lithium disilicate endocrowns. Group EZ: monolithic zirconia endocrowns. Group OLD: lithium disilicate overlays. Group OZ: monolithic zirconia overlays. Overlays did not extend in the pulp chamber and endocrowns extended in the pulp chamber 2 mm. After adhesive bonding of the restorations, the specimens were subjected to thermocycling (×5000 cycles) and then to fracture resistance testing at lateral static loading (1 mm/min) at a universal testing machine. The failure mode of the specimens was qualitatively evaluated. Differences in means were compared using with t-tests for independent samples or Mann–Whitney test (<i>p</i> < 0.05). Weibull distribution analysis was also performed. Group ELD showed significantly higher fracture strength than all other groups (<i>p</i> = 0.001), and the highest Weibull modulus. Conclusions: Lithium disilicate endocrowns exhibit higher fracture strength and are more reliable compared to the other types of restorations examined. Endocrowns had more catastrophic failures compared to overlays. |
| first_indexed | 2024-03-10T23:50:34Z |
| format | Article |
| id | doaj.art-81ecde53b7e648ee94cef314066660e7 |
| institution | Directory Open Access Journal |
| issn | 2079-4983 |
| language | English |
| last_indexed | 2024-03-10T23:50:34Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Functional Biomaterials |
| spelling | doaj.art-81ecde53b7e648ee94cef314066660e72023-11-19T01:43:17ZengMDPI AGJournal of Functional Biomaterials2079-49832023-08-0114842210.3390/jfb14080422In-Vitro Comparison of Fracture Strength of Endocrowns and Overlays in Endodontically Treated Teeth Manufactured with Monolithic Lithium Disilicate and ZirconiaMaya Veselinova0Sofia Diamantopoulou1Chariklia Paximada2Efstratios Papazoglou3Department of Operative Dentistry, National and Kapodistrian University of Athens, 11527 Athens, GreeceDepartment of Operative Dentistry, National and Kapodistrian University of Athens, 11527 Athens, GreeceDepartment of Operative Dentistry, National and Kapodistrian University of Athens, 11527 Athens, GreeceDepartment of Operative Dentistry, National and Kapodistrian University of Athens, 11527 Athens, GreeceTo evaluate the fracture strength and the failure mode of endodontically treated molars restored with monolithic lithium disilicate and zirconia endocrowns and overlays. A total of 48 extracted mandibular molars were endodontically treated, decoronated 2 mm above the cementoenamel junction and divided into four 12-specimen groups. Group ELD: lithium disilicate endocrowns. Group EZ: monolithic zirconia endocrowns. Group OLD: lithium disilicate overlays. Group OZ: monolithic zirconia overlays. Overlays did not extend in the pulp chamber and endocrowns extended in the pulp chamber 2 mm. After adhesive bonding of the restorations, the specimens were subjected to thermocycling (×5000 cycles) and then to fracture resistance testing at lateral static loading (1 mm/min) at a universal testing machine. The failure mode of the specimens was qualitatively evaluated. Differences in means were compared using with t-tests for independent samples or Mann–Whitney test (<i>p</i> < 0.05). Weibull distribution analysis was also performed. Group ELD showed significantly higher fracture strength than all other groups (<i>p</i> = 0.001), and the highest Weibull modulus. Conclusions: Lithium disilicate endocrowns exhibit higher fracture strength and are more reliable compared to the other types of restorations examined. Endocrowns had more catastrophic failures compared to overlays.https://www.mdpi.com/2079-4983/14/8/422endocrownsoverlaysmonolithic lithium disilicatemonolithic zirconia |
| spellingShingle | Maya Veselinova Sofia Diamantopoulou Chariklia Paximada Efstratios Papazoglou In-Vitro Comparison of Fracture Strength of Endocrowns and Overlays in Endodontically Treated Teeth Manufactured with Monolithic Lithium Disilicate and Zirconia Journal of Functional Biomaterials endocrowns overlays monolithic lithium disilicate monolithic zirconia |
| title | In-Vitro Comparison of Fracture Strength of Endocrowns and Overlays in Endodontically Treated Teeth Manufactured with Monolithic Lithium Disilicate and Zirconia |
| title_full | In-Vitro Comparison of Fracture Strength of Endocrowns and Overlays in Endodontically Treated Teeth Manufactured with Monolithic Lithium Disilicate and Zirconia |
| title_fullStr | In-Vitro Comparison of Fracture Strength of Endocrowns and Overlays in Endodontically Treated Teeth Manufactured with Monolithic Lithium Disilicate and Zirconia |
| title_full_unstemmed | In-Vitro Comparison of Fracture Strength of Endocrowns and Overlays in Endodontically Treated Teeth Manufactured with Monolithic Lithium Disilicate and Zirconia |
| title_short | In-Vitro Comparison of Fracture Strength of Endocrowns and Overlays in Endodontically Treated Teeth Manufactured with Monolithic Lithium Disilicate and Zirconia |
| title_sort | in vitro comparison of fracture strength of endocrowns and overlays in endodontically treated teeth manufactured with monolithic lithium disilicate and zirconia |
| topic | endocrowns overlays monolithic lithium disilicate monolithic zirconia |
| url | https://www.mdpi.com/2079-4983/14/8/422 |
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