Curvature-dependent shear bond strength of different attachment materials for orthodontic lingual indirect bonding
Abstract To evaluate the shear bond strength (SBS) of different attachment materials used for lingual bonding, the influence of artificial aging and the radii of curvature of the enamel surface on SBS, 192 third molars were photographed to determine the radius of curvature of the oral surface. After...
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| Format: | Article |
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Nature Portfolio
2021-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-96164-3 |
| _version_ | 1818840432502636544 |
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| author | Rebecca Jungbauer Paul Al-Burghol Martin Rosentritt Christian Kirschneck Peter Proff Friedrich Paulsen Christian M. Hammer |
| author_facet | Rebecca Jungbauer Paul Al-Burghol Martin Rosentritt Christian Kirschneck Peter Proff Friedrich Paulsen Christian M. Hammer |
| author_sort | Rebecca Jungbauer |
| collection | DOAJ |
| description | Abstract To evaluate the shear bond strength (SBS) of different attachment materials used for lingual bonding, the influence of artificial aging and the radii of curvature of the enamel surface on SBS, 192 third molars were photographed to determine the radius of curvature of the oral surface. After phosphoric acid etching a cylindrical test piece was bonded to the oral enamel using a mold that was filled with a chemically curing (Maximum Cure, Transbond IDB Premix) or a dual-curing (Nexus NX3, RelyX Unicem2) attachment material. SBS was tested after 24 h, 500 thermal cycles or 90 days at 37 °C with a universal testing machine. Computed tomography scans were performed to determine the bonded surface and calculate SBS. Values ranged from 8.3 to 20.9 MPa. RelyX Unicem2 showed the highest SBS values at baseline, 500 thermal cycles and after 90 days (p < 0.001). Ninety days of wet storage significantly reduced SBS of Maximum Cure (p = 0.028). The radius of curvature correlated positively with SBS (r s = 0.204, p = 0.005). The SBS of all attachment materials was sufficient for clinical use, even after artificial aging. RelyX Unicem2 showed almost twice as high SBS values as the other attachment materials. |
| first_indexed | 2024-12-19T04:10:06Z |
| format | Article |
| id | doaj.art-0ef96dfc34a442af9a38c135c5c878b9 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T04:10:06Z |
| publishDate | 2021-08-01 |
| publisher | Nature Portfolio |
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| spelling | doaj.art-0ef96dfc34a442af9a38c135c5c878b92022-12-21T20:36:25ZengNature PortfolioScientific Reports2045-23222021-08-0111111010.1038/s41598-021-96164-3Curvature-dependent shear bond strength of different attachment materials for orthodontic lingual indirect bondingRebecca Jungbauer0Paul Al-Burghol1Martin Rosentritt2Christian Kirschneck3Peter Proff4Friedrich Paulsen5Christian M. Hammer6Department of Orthodontics, University Medical Centre RegensburgDepartment of Orthodontics, University Medical Centre RegensburgDepartment of Prosthetic Dentistry, University Medical Centre RegensburgDepartment of Orthodontics, University Medical Centre RegensburgDepartment of Orthodontics, University Medical Centre RegensburgInstitute of Functional and Clinical Anatomy, Friedrich Alexander University Erlangen-NürnbergInstitute of Functional and Clinical Anatomy, Friedrich Alexander University Erlangen-NürnbergAbstract To evaluate the shear bond strength (SBS) of different attachment materials used for lingual bonding, the influence of artificial aging and the radii of curvature of the enamel surface on SBS, 192 third molars were photographed to determine the radius of curvature of the oral surface. After phosphoric acid etching a cylindrical test piece was bonded to the oral enamel using a mold that was filled with a chemically curing (Maximum Cure, Transbond IDB Premix) or a dual-curing (Nexus NX3, RelyX Unicem2) attachment material. SBS was tested after 24 h, 500 thermal cycles or 90 days at 37 °C with a universal testing machine. Computed tomography scans were performed to determine the bonded surface and calculate SBS. Values ranged from 8.3 to 20.9 MPa. RelyX Unicem2 showed the highest SBS values at baseline, 500 thermal cycles and after 90 days (p < 0.001). Ninety days of wet storage significantly reduced SBS of Maximum Cure (p = 0.028). The radius of curvature correlated positively with SBS (r s = 0.204, p = 0.005). The SBS of all attachment materials was sufficient for clinical use, even after artificial aging. RelyX Unicem2 showed almost twice as high SBS values as the other attachment materials.https://doi.org/10.1038/s41598-021-96164-3 |
| spellingShingle | Rebecca Jungbauer Paul Al-Burghol Martin Rosentritt Christian Kirschneck Peter Proff Friedrich Paulsen Christian M. Hammer Curvature-dependent shear bond strength of different attachment materials for orthodontic lingual indirect bonding Scientific Reports |
| title | Curvature-dependent shear bond strength of different attachment materials for orthodontic lingual indirect bonding |
| title_full | Curvature-dependent shear bond strength of different attachment materials for orthodontic lingual indirect bonding |
| title_fullStr | Curvature-dependent shear bond strength of different attachment materials for orthodontic lingual indirect bonding |
| title_full_unstemmed | Curvature-dependent shear bond strength of different attachment materials for orthodontic lingual indirect bonding |
| title_short | Curvature-dependent shear bond strength of different attachment materials for orthodontic lingual indirect bonding |
| title_sort | curvature dependent shear bond strength of different attachment materials for orthodontic lingual indirect bonding |
| url | https://doi.org/10.1038/s41598-021-96164-3 |
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