Survival Analysis of Orthodontic Micro-Implants: A Retrospective Study on the Effects of Patient-Related Factors on Micro-Implant Success
The purpose of this study was to investigate the effects of patient-related factors such as anteroposterior and vertical skeletal patterns and alveolar bone density on the success rate of micro-implants. Cases of orthodontic micro-implants (<i>n</i> = 404; diameter, 1.6 mm; length, 6 mm)...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/22/11655 |
| _version_ | 1827645091377840128 |
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| author | Jung-Kwang Lee Nayansi Jha Yoon-Ji Kim Dong-Yul Lee |
| author_facet | Jung-Kwang Lee Nayansi Jha Yoon-Ji Kim Dong-Yul Lee |
| author_sort | Jung-Kwang Lee |
| collection | DOAJ |
| description | The purpose of this study was to investigate the effects of patient-related factors such as anteroposterior and vertical skeletal patterns and alveolar bone density on the success rate of micro-implants. Cases of orthodontic micro-implants (<i>n</i> = 404; diameter, 1.6 mm; length, 6 mm) were investigated in 164 patients (127 women, 37 men; mean age, 23.6 ± 5.8 years). Cortical bone thickness and alveolar bone density were measured using diagnostic cone-beam computed tomography to examine their effects on the micro-implant’s survival. Moreover, anteroposterior and vertical facial patterns were considered as independent variables for the success of micro-implants. Marginal survival analysis was performed by analyzing the time from implant placement to the removal of the failed micro-implants, or to the end of treatment for successful micro-implants. Variables including age, sex, implantation side, implantation site, root proximity, and type of loading (immediate vs. delayed) were also assessed. In total, 347 (85.9%) of the 404 micro-implants were successful. The mean loading time was 12.4 ± 4.3 months. Marginal survival analysis showed that the effects of the anteroposterior and vertical facial patterns on the risk of failure were not statistically significant. The factors significantly associated with the micro-implant loading time were cortical bone density, root proximity, and micro-implants replanted in the same site. In conclusion, our findings indicate that anteroposterior and vertical skeletal patterns are not associated with the success of orthodontic micro-implants. Cortical bone density may be associated with the micro-implant’s success. |
| first_indexed | 2024-03-09T18:29:37Z |
| format | Article |
| id | doaj.art-b5a9dc2acb2a4f20a9002ce37a794b6e |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T18:29:37Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-b5a9dc2acb2a4f20a9002ce37a794b6e2023-11-24T07:38:46ZengMDPI AGApplied Sciences2076-34172022-11-0112221165510.3390/app122211655Survival Analysis of Orthodontic Micro-Implants: A Retrospective Study on the Effects of Patient-Related Factors on Micro-Implant SuccessJung-Kwang Lee0Nayansi Jha1Yoon-Ji Kim2Dong-Yul Lee3Graduate School of Medicine, Korea University, Seoul 02481, Republic of KoreaGraduate School of Medicine, University of Ulsan, Seoul 05505, Republic of KoreaGraduate School of Medicine, University of Ulsan, Seoul 05505, Republic of KoreaGraduate School of Medicine, Korea University, Seoul 02481, Republic of KoreaThe purpose of this study was to investigate the effects of patient-related factors such as anteroposterior and vertical skeletal patterns and alveolar bone density on the success rate of micro-implants. Cases of orthodontic micro-implants (<i>n</i> = 404; diameter, 1.6 mm; length, 6 mm) were investigated in 164 patients (127 women, 37 men; mean age, 23.6 ± 5.8 years). Cortical bone thickness and alveolar bone density were measured using diagnostic cone-beam computed tomography to examine their effects on the micro-implant’s survival. Moreover, anteroposterior and vertical facial patterns were considered as independent variables for the success of micro-implants. Marginal survival analysis was performed by analyzing the time from implant placement to the removal of the failed micro-implants, or to the end of treatment for successful micro-implants. Variables including age, sex, implantation side, implantation site, root proximity, and type of loading (immediate vs. delayed) were also assessed. In total, 347 (85.9%) of the 404 micro-implants were successful. The mean loading time was 12.4 ± 4.3 months. Marginal survival analysis showed that the effects of the anteroposterior and vertical facial patterns on the risk of failure were not statistically significant. The factors significantly associated with the micro-implant loading time were cortical bone density, root proximity, and micro-implants replanted in the same site. In conclusion, our findings indicate that anteroposterior and vertical skeletal patterns are not associated with the success of orthodontic micro-implants. Cortical bone density may be associated with the micro-implant’s success.https://www.mdpi.com/2076-3417/12/22/11655micro-implantssurvival analysissuccess ratefacial patterns |
| spellingShingle | Jung-Kwang Lee Nayansi Jha Yoon-Ji Kim Dong-Yul Lee Survival Analysis of Orthodontic Micro-Implants: A Retrospective Study on the Effects of Patient-Related Factors on Micro-Implant Success Applied Sciences micro-implants survival analysis success rate facial patterns |
| title | Survival Analysis of Orthodontic Micro-Implants: A Retrospective Study on the Effects of Patient-Related Factors on Micro-Implant Success |
| title_full | Survival Analysis of Orthodontic Micro-Implants: A Retrospective Study on the Effects of Patient-Related Factors on Micro-Implant Success |
| title_fullStr | Survival Analysis of Orthodontic Micro-Implants: A Retrospective Study on the Effects of Patient-Related Factors on Micro-Implant Success |
| title_full_unstemmed | Survival Analysis of Orthodontic Micro-Implants: A Retrospective Study on the Effects of Patient-Related Factors on Micro-Implant Success |
| title_short | Survival Analysis of Orthodontic Micro-Implants: A Retrospective Study on the Effects of Patient-Related Factors on Micro-Implant Success |
| title_sort | survival analysis of orthodontic micro implants a retrospective study on the effects of patient related factors on micro implant success |
| topic | micro-implants survival analysis success rate facial patterns |
| url | https://www.mdpi.com/2076-3417/12/22/11655 |
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