In Vitro Investigation of Material Combinations for Meso- and Suprastructures in a Biomimetic Approach to Restore One-Piece Zirconia Implants
The aim of this study was to find a suitable material combination to avoid cement excess in the marginal region of one-piece zirconia implant-supported restorations by means of a hybrid crown consisting of a meso- and a suprastructure. One-piece zirconia implants (<i>n</i> = 120) were em...
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MDPI AG
2023-02-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/4/1355 |
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| author | Reto Nueesch Sabrina Karlin Jens Fischer Nadja Rohr |
| author_facet | Reto Nueesch Sabrina Karlin Jens Fischer Nadja Rohr |
| author_sort | Reto Nueesch |
| collection | DOAJ |
| description | The aim of this study was to find a suitable material combination to avoid cement excess in the marginal region of one-piece zirconia implant-supported restorations by means of a hybrid crown consisting of a meso- and a suprastructure. One-piece zirconia implants (<i>n</i> = 120) were embedded in epoxy resin. Microfilled resin composite mesostructures (<i>n</i> = 60), designed as caps, were bonded on the implant abutment with a primer only. A molar crown was constructed and cemented with a resin cement on top of the mesostructure as a suprastructure out of feldspar ceramic (<i>n</i> = 12), lithium-disilicate (<i>n</i> = 24), or zirconia (<i>n</i> = 24). Fracture load (<i>n</i> = 6) and retention force (<i>n</i> = 6) were measured immediately after storage in distilled water at 37 °C for 24 h, as well as after an additional exposure to artificial aging in a chewing simulator and simultaneous thermal cycling. For the measurement of the fracture load, monolithic crowns made of the employed restorative materials and identical in shape to the hybrid crowns served as controls (<i>n</i> = 6 each). Fracture load values for feldspar ceramic and lithium-disilicate hybrid crowns were slightly higher than those for the respective monolithic crowns at baseline and after aging, which was statistically significant only for feldspar crowns after aging. In contrast, fracture load values for zirconia monolithic crowns were higher than those for zirconia hybrid crowns, which was only statistically significant after aging. Artificial aging reduced the fracture load of feldspar and lithium-disilicate crowns both for hybrid and monolithic crowns. The effect was only statistically significant for lithium disilicate hybrid crowns. The fracture load for hybrid and monolithic zirconia crowns was increased by artificial aging without reaching statistical significance. The retention force of lithium-disilicate and zirconia hybrid crowns was not affected by artificial aging. Taking into account retention force and fracture load, lithium-disilicate hybrid crowns showed promising results. |
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| id | doaj.art-aa397c80b28243e7aec4f86684c3a88b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T08:30:40Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-aa397c80b28243e7aec4f86684c3a88b2023-11-16T21:48:40ZengMDPI AGMaterials1996-19442023-02-01164135510.3390/ma16041355In Vitro Investigation of Material Combinations for Meso- and Suprastructures in a Biomimetic Approach to Restore One-Piece Zirconia ImplantsReto Nueesch0Sabrina Karlin1Jens Fischer2Nadja Rohr3Biomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, 4001 Basel, SwitzerlandBiomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, 4001 Basel, SwitzerlandBiomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, 4001 Basel, SwitzerlandBiomaterials and Technology, Department of Reconstructive Dentistry, University Center for Dental Medicine Basel UZB, University of Basel, 4001 Basel, SwitzerlandThe aim of this study was to find a suitable material combination to avoid cement excess in the marginal region of one-piece zirconia implant-supported restorations by means of a hybrid crown consisting of a meso- and a suprastructure. One-piece zirconia implants (<i>n</i> = 120) were embedded in epoxy resin. Microfilled resin composite mesostructures (<i>n</i> = 60), designed as caps, were bonded on the implant abutment with a primer only. A molar crown was constructed and cemented with a resin cement on top of the mesostructure as a suprastructure out of feldspar ceramic (<i>n</i> = 12), lithium-disilicate (<i>n</i> = 24), or zirconia (<i>n</i> = 24). Fracture load (<i>n</i> = 6) and retention force (<i>n</i> = 6) were measured immediately after storage in distilled water at 37 °C for 24 h, as well as after an additional exposure to artificial aging in a chewing simulator and simultaneous thermal cycling. For the measurement of the fracture load, monolithic crowns made of the employed restorative materials and identical in shape to the hybrid crowns served as controls (<i>n</i> = 6 each). Fracture load values for feldspar ceramic and lithium-disilicate hybrid crowns were slightly higher than those for the respective monolithic crowns at baseline and after aging, which was statistically significant only for feldspar crowns after aging. In contrast, fracture load values for zirconia monolithic crowns were higher than those for zirconia hybrid crowns, which was only statistically significant after aging. Artificial aging reduced the fracture load of feldspar and lithium-disilicate crowns both for hybrid and monolithic crowns. The effect was only statistically significant for lithium disilicate hybrid crowns. The fracture load for hybrid and monolithic zirconia crowns was increased by artificial aging without reaching statistical significance. The retention force of lithium-disilicate and zirconia hybrid crowns was not affected by artificial aging. Taking into account retention force and fracture load, lithium-disilicate hybrid crowns showed promising results.https://www.mdpi.com/1996-1944/16/4/1355mesostructuresuprastructuremicrofilled compositefeldspathic ceramiclithium-disilicatezirconia |
| spellingShingle | Reto Nueesch Sabrina Karlin Jens Fischer Nadja Rohr In Vitro Investigation of Material Combinations for Meso- and Suprastructures in a Biomimetic Approach to Restore One-Piece Zirconia Implants Materials mesostructure suprastructure microfilled composite feldspathic ceramic lithium-disilicate zirconia |
| title | In Vitro Investigation of Material Combinations for Meso- and Suprastructures in a Biomimetic Approach to Restore One-Piece Zirconia Implants |
| title_full | In Vitro Investigation of Material Combinations for Meso- and Suprastructures in a Biomimetic Approach to Restore One-Piece Zirconia Implants |
| title_fullStr | In Vitro Investigation of Material Combinations for Meso- and Suprastructures in a Biomimetic Approach to Restore One-Piece Zirconia Implants |
| title_full_unstemmed | In Vitro Investigation of Material Combinations for Meso- and Suprastructures in a Biomimetic Approach to Restore One-Piece Zirconia Implants |
| title_short | In Vitro Investigation of Material Combinations for Meso- and Suprastructures in a Biomimetic Approach to Restore One-Piece Zirconia Implants |
| title_sort | in vitro investigation of material combinations for meso and suprastructures in a biomimetic approach to restore one piece zirconia implants |
| topic | mesostructure suprastructure microfilled composite feldspathic ceramic lithium-disilicate zirconia |
| url | https://www.mdpi.com/1996-1944/16/4/1355 |
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