• DOI:10.1111/j.1601-6343.2008.01434.x
• Corpus ID: 10031150

Bone density at interradicular sites: implications for orthodontic mini-implant placement.

@article{Chun2009BoneDA,
  title={Bone density at interradicular sites: implications for orthodontic mini-implant placement.},
  author={Youn Sic Chun and Won Hee Lim},
  journal={Orthodontics \& craniofacial research},
  year={2009},
  volume={12 1},
  pages={
          25-32
        }
}

• Y. Chun, W. Lim
• Published 1 February 2009
• Medicine
• Orthodontics & craniofacial research

OBJECTIVES
Implant stability is primarily related to local bone density; Few studies have evaluated interradicular bone density related to mini-implant placement for orthodontic anchorage. Therefore, this study evaluated bone density differences between interradicular sites.

SETTING AND SAMPLE POPULATION
Computed tomographic (CT) images were obtained from 14 males and 14 females (mean age 27 years, range 23-35 years). Bone density in Hounsfield units (HU) was measured at 13 interradicular sites and four bone levels.

RESULTS
Bone densities in most areas were higher than 850 HU. Statistically significant differences in bone density were detected at different levels and sites. Bone densities in both maxilla and mandible significantly increased from the alveolar crest toward basal bone in posterior areas, while the opposite was observed in anterior areas. There were statistically significant differences in bone densities between the maxilla and mandible in posterior areas. Bone densities progressively increased from anterior to posterior areas in the mandible.

CONCLUSION
The results suggest that mini-implants for orthodontic anchorage may be effective when placed in most areas with equivalent bone density up to 6 mm apical to the alveolar crest. Site selection should be adjusted according to bone density assessment.