Korean J Oral Maxillofac Radiol.  2010 Dec;40(4):179-185.

Buccal cortical bone thickness on CBCT for mini-implant

• Goo JG
• Lim SH
• Lee BJ
• Kim JD

Abstract

PURPOSE
Cortical bone thickness is one of the important factor in mini-implant stability. This study was performed to investigate the buccal cortical bone thickness at every interdental area as an aid in planning mini-implant placement.
MATERIALS AND METHODS
Two-dimensional slices at every interdental area were selected from the cone-beam computed tomography scans of 20 patients in third decade. Buccal cortical bone thickness was measured at 2, 4, and 6 mm levels from the alveolar crest in the interdental bones of posterior regions of both jaws using the plot profile function of Ez3D2009trade mark (Vatech, Yongin, Korea). The results were analyzed using by Mann-Whitney test.
RESULTS
Buccal cortical bone was thicker in the mandible than in the maxilla. The thickness increased with further distance from the alveolar crest in the maxilla and with coming from the posterior to anterior region in the mandible (p<0.01). The maximum CT value showed an increasing tendency with further distance from the alveolar crest and with coming from posterior to anterior region in both jaws.
CONCLUSION
Interdental buccal cortical bone thickness varied in both jaws, however our study showed a distinct tendency. We expect that these results could be helpful for the selection and preparation of mini-implant sites.

Keyword

Cone-Beam Computed Tomography; Orthodontic Anchorage Procedures

MeSH Terms

Cone-Beam Computed Tomography
Humans
Jaw
Mandible
Maxilla
Orthodontic Anchorage Procedures