Korean J Oral Maxillofac Radiol.  2008 Mar;38(1):1-5.

Quantitative assessment of periimplant bone density (HU) on CBCT image

Affiliations
  • 1Department of Dental Science Graduate School & Oral Biology Research, Chosun University, Korea. jdakim@chosun.ac.kr

Abstract

PURPOSE: The primary aims of this retrospective study were to compare subjective bone quality and bone quality based on the Hounsfield scale in different segments of the edentulous jaw, and to establish quantitative and objective assessment of the bone quality.
MATERIALS AND METHODS
Twenty eight randomly selected cone-beam computed tomographic (CBCT) scans were analyzed. For evaluation one hundred and twelve edentulous areas were selected. Implant recipient sites were evaluated visually for Lekholm and Zarb classification. The same sites were subsequently evaluated digitally using the Hounsfield scale with Vimplant2.0(TM), and the results were correlated with visual classification. Data was subject for statistical analysis in order to determine correlation between recorded HU and the regions of the mouth with the Kruskal-Wallis test.
RESULTS
The highest unit/mean density value (311 HU) was found in the anterior mandible, followed by 259 HU for the posterior mandible, 216 HU for the anterior maxilla, and 127 HU for the posterior maxilla. These results demonstrate a strong correlation for HU depending on the region of the mouth (p<0.001). The relationship between HU and type 4 bone was found to be significant (r=0.74).
CONCLUSION
Knowledge of the Hounsfield value as a quantitative measurement of bone density can be helpful as a diagnostic tool by using CBMercuRay(TM) with Vimplant(TM) software.

Keyword

Bone Density; Tomography, Cone-Beam Computed

MeSH Terms

Bone Density
Cone-Beam Computed Tomography
Jaw, Edentulous
Mandible
Maxilla
Mouth
Retrospective Studies
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