Dimensional accuracy, mechanical property, and optical stability of zirconia orthodontic bracket according to yttria proportions
Abstract This in vitro study evaluated comprehensively the performances of zirconia brackets with varying yttria proportions in manufacturing advanced orthodontic brackets. Three experimental groups of zirconia brackets were fabricated using yttria-stabilized zirconia (YSZ) materials with different...
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Nature Portfolio
2023-11-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-47827-w |
| _version_ | 1827634863048491008 |
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| author | Changbum Park Hai-Van Giap Jae-Sung Kwon Kyung-Ho Kim Sung-Hwan Choi Joon Sang Lee Kee-Joon Lee |
| author_facet | Changbum Park Hai-Van Giap Jae-Sung Kwon Kyung-Ho Kim Sung-Hwan Choi Joon Sang Lee Kee-Joon Lee |
| author_sort | Changbum Park |
| collection | DOAJ |
| description | Abstract This in vitro study evaluated comprehensively the performances of zirconia brackets with varying yttria proportions in manufacturing advanced orthodontic brackets. Three experimental groups of zirconia brackets were fabricated using yttria-stabilized zirconia (YSZ) materials with different yttria proportions—3 mol% yttria (3Y-YSZ), 4 mol% yttria (4Y-YSZ), and 5 mol% yttria (5Y-YSZ) (Tosoh Ceramic, Japan). A polycrystalline alumina ceramic bracket (3M™ Clarity™ Advanced, MBT 0.022-in. slot) was employed as the control group. Morphological properties, including slot surface structure and dimensions, were examined using scanning electron microscopy and surface profiler analysis. Manufacturing accuracy was assessed with root mean square calculations of trueness and precision. Mechanical properties were tested, encompassing static and kinetic frictional resistance (FR) and fracture strength. Optical stability was evaluated through 20,000 cycles of thermocycling and a 7-day immersion in various coloring agents. Within the limitations of this study, zirconia brackets containing 3 to 5 mol% YSZ presented enhanced reliability in terms of dimensional accuracy and demonstrated favorable optical stability. Notably, owing to its advantageous mechanical properties, the 3Y-YSZ variant showed remarkable potential as an advanced material for fabricating orthodontic brackets. |
| first_indexed | 2024-03-09T15:19:14Z |
| format | Article |
| id | doaj.art-1e1e6305bc1a4182a4921135a3ab7adf |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-09T15:19:14Z |
| publishDate | 2023-11-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj.art-1e1e6305bc1a4182a4921135a3ab7adf2023-11-26T12:53:40ZengNature PortfolioScientific Reports2045-23222023-11-0113111310.1038/s41598-023-47827-wDimensional accuracy, mechanical property, and optical stability of zirconia orthodontic bracket according to yttria proportionsChangbum Park0Hai-Van Giap1Jae-Sung Kwon2Kyung-Ho Kim3Sung-Hwan Choi4Joon Sang Lee5Kee-Joon Lee6Department of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of DentistryDepartment of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of DentistryDepartment and Research Institute for Dental Biomaterials and Bioengineering, Yonsei University College of DentistryDepartment of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of DentistryDepartment of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of DentistryDepartment of Mechanical Engineering, Yonsei UniversityDepartment of Orthodontics, Institute of Craniofacial Deformity, Yonsei University College of DentistryAbstract This in vitro study evaluated comprehensively the performances of zirconia brackets with varying yttria proportions in manufacturing advanced orthodontic brackets. Three experimental groups of zirconia brackets were fabricated using yttria-stabilized zirconia (YSZ) materials with different yttria proportions—3 mol% yttria (3Y-YSZ), 4 mol% yttria (4Y-YSZ), and 5 mol% yttria (5Y-YSZ) (Tosoh Ceramic, Japan). A polycrystalline alumina ceramic bracket (3M™ Clarity™ Advanced, MBT 0.022-in. slot) was employed as the control group. Morphological properties, including slot surface structure and dimensions, were examined using scanning electron microscopy and surface profiler analysis. Manufacturing accuracy was assessed with root mean square calculations of trueness and precision. Mechanical properties were tested, encompassing static and kinetic frictional resistance (FR) and fracture strength. Optical stability was evaluated through 20,000 cycles of thermocycling and a 7-day immersion in various coloring agents. Within the limitations of this study, zirconia brackets containing 3 to 5 mol% YSZ presented enhanced reliability in terms of dimensional accuracy and demonstrated favorable optical stability. Notably, owing to its advantageous mechanical properties, the 3Y-YSZ variant showed remarkable potential as an advanced material for fabricating orthodontic brackets.https://doi.org/10.1038/s41598-023-47827-w |
| spellingShingle | Changbum Park Hai-Van Giap Jae-Sung Kwon Kyung-Ho Kim Sung-Hwan Choi Joon Sang Lee Kee-Joon Lee Dimensional accuracy, mechanical property, and optical stability of zirconia orthodontic bracket according to yttria proportions Scientific Reports |
| title | Dimensional accuracy, mechanical property, and optical stability of zirconia orthodontic bracket according to yttria proportions |
| title_full | Dimensional accuracy, mechanical property, and optical stability of zirconia orthodontic bracket according to yttria proportions |
| title_fullStr | Dimensional accuracy, mechanical property, and optical stability of zirconia orthodontic bracket according to yttria proportions |
| title_full_unstemmed | Dimensional accuracy, mechanical property, and optical stability of zirconia orthodontic bracket according to yttria proportions |
| title_short | Dimensional accuracy, mechanical property, and optical stability of zirconia orthodontic bracket according to yttria proportions |
| title_sort | dimensional accuracy mechanical property and optical stability of zirconia orthodontic bracket according to yttria proportions |
| url | https://doi.org/10.1038/s41598-023-47827-w |
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