Decreased alveolar bone turnover is related to the occurrence of root resorption during experimental tooth movement in dogs

Toru Deguchi, Masahiro Seiryu, Takayoshi Daimaruya, Lawrence P. Garetto, Teruko Takano-Yamamoto, W. Eugene Roberts

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Objective: To investigate the relationship between root resorption (RR) and bone turnover in two different types of tooth movement in dogs. Materials and Methods: A total of 16 dogs in two different groups were used. Tooth movement of dog premolars resulted from approximately 200 g of force. Histomorphometric analysis of premolar roots was assessed after 4 and 12 weeks of tooth movement by comparing nonresorptive to resorptive surfaces. Results: Histomorphometric analysis indicated a significant decrease in the bone formation rate in the root resorptive areas, which resulted in decreased bone volume after 12 weeks. The threshold to detect RR in periapical radiographs was about 1.0 mm2. Conclusions: A sustained mechanical load, due to the prolonged stress and strain of continuous mechanics, induces elevated bone metabolic activity, such as the bone turnover (remodeling) and change in bone volume (modeling). Therefore, our data support the hypothesis that increased RR is related to decreased bone formation (turnover) in high stress areas exposed to prolonged orthodontic tooth movement.

本文言語English
ページ(範囲)386-393
ページ数8
ジャーナルAngle Orthodontist
85
3
DOI
出版ステータスPublished - 2015 5月 1

ASJC Scopus subject areas

  • 歯科矯正学

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