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Dynamics of alveolar bone healing after the removal of orthodontic temporary anchorage devices

Authors
 Sung‐Jin Kim  ;  Young Don Ha  ;  Eunji Kim  ;  Woowon Jang  ;  Soonshin Hwang  ;  Tung Nguyen  ;  Ching‐Chang Ko  ;  Yoon Jeong Choi  ;  Kyung‐Ho Kim  ;  Chooryung J. Chung 
Citation
 Journal of Periodontal Research, Vol.54(4) : 388-395, 2019 
Journal Title
 Journal of Periodontal Research 
ISSN
 0022-3484 
Issue Date
2019
Keywords
bone formation ; bone histomorphometry ; mineral apposition rate ; removal ; temporary anchorage devices
Abstract
OBJECTIVE: The aim of this study was to investigate the dynamics of alveolar bone formation and healing pattern after the removal of orthodontic temporary anchorage devices (TADs). METHODS: Miniscrews (N = 32) were inserted into the buccal inter-radicular alveolar bone in beagle dogs. Afterward, miniscrews were removed at different time points during a 13-week period and six different in vivo fluorescent markers were injected at 1, 2, 6, 8, 10, and 12 weeks. Serial changes in bone apposition at the removal and intact control sites were evaluated using μCT, histology, and bone histomorphometry. RESULTS: Gradual bone apposition at the TAD removal site was noted with bone volume/tissue volume (BV/TV) reaching the level of the control alveolar bone by 7 weeks. Histologically, newly formed woven bone was detected within the removal site which was distinct from the surrounding pre-existing alveolar bone at 13 weeks. Accelerated mineral apposition rate (MAR) and bone formation rate (BFR) were noted between 2 and 6 weeks in the removal site (P < 0.05). Although MAR and BFR gradually decreased after its peak at 2-4 weeks, BFR in the removal site was still higher than the control site at 10-12 weeks (P < 0.05). CONCLUSIONS: Spontaneous bone healing was noted after TAD removal with regional acceleration of MAR and BFR within 2-6 weeks. However, the removal site was mainly filled with woven bone even after 13 weeks, suggesting a longer healing period is required for the quality of the alveolar bone to reach levels comparable to the surrounding alveolar bone.
Full Text
https://onlinelibrary.wiley.com/doi/full/10.1111/jre.12640
DOI
10.1111/jre.12640
Appears in Collections:
2. College of Dentistry (치과대학) > Others (기타) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyung Ho(김경호) ORCID logo https://orcid.org/0000-0002-8154-2041
Kim, Sung Jin(김성진) ORCID logo https://orcid.org/0000-0003-4115-0403
Jang, Woowon(장우원)
Chung, Chooryung J.(정주령) ORCID logo https://orcid.org/0000-0001-9399-7193
Choi, Yoon Jeong(최윤정) ORCID logo https://orcid.org/0000-0003-0781-8836
Hwang, Soon Shin(황순신) ORCID logo https://orcid.org/0000-0002-6472-4732
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/171114
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