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

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)386-393
Number of pages8
JournalAngle Orthodontist
Volume85
Issue number3
DOIs
StatePublished - May 1 2015

Keywords

  • Alveolar bone turnover
  • Biomechanics
  • Histomorphometric analysis
  • Root resorption
  • Tooth movement

ASJC Scopus subject areas

  • Orthodontics

Fingerprint Dive into the research topics of 'Decreased alveolar bone turnover is related to the occurrence of root resorption during experimental tooth movement in dogs'. Together they form a unique fingerprint.

  • Cite this

    Deguchi, T., Seiryu, M., Daimaruya, T., Garetto, L. P., Takano-Yamamoto, T., & Roberts, W. E. (2015). Decreased alveolar bone turnover is related to the occurrence of root resorption during experimental tooth movement in dogs. Angle Orthodontist, 85(3), 386-393. https://doi.org/10.2319/021714-117.1