Estimation of Lower Jaw Density using CT data

  • Jargalsaikhan, Ariunbold (National University of Mongolia) ;
  • Sengee, Nyamlkhagva (National University of Mongolia) ;
  • Telue, Berekjan (National University of Mongolia) ;
  • Ochirkhvv, Sambuu (National University of Mongolia)
  • Received : 2019.04.29
  • Accepted : 2019.05.21
  • Published : 2019.06.30


Bone density is one of the factors in the early failure of dental implants and doctors should make a preoperative assessment of jaw bone density using patient's CT data before dental implant surgery in order to find out whether the patient has osteoporosis and osteopenia. The main goal of this study was to propose a method that based on image processing techniques in order to provide accurate information about where to drill and place an abutment screw of implants in the jaw bone for doctors and reduce human activity for the estimation of the local cancellous bone density of mandible using CT data. The experiment was performed on a computed tomography data of the jaw bone of two different individuals. We assumed that the result of the estimation of jaw bone density depends on the angle of drilling and average HU (Hounsfield Unit) values were used to evaluate the quality of local cancellous bone density of mandible. As a result of this study, we have been developed a toolbox that can be used to estimate jaw bone density automatically and found a positive correlation between the angle of the drill and time complexity but a negative correlation between the diameter of the drill and time complexity.


Computed tomography (CT);mandibular density;lower jaw;medical image processing


  1. Dental Implants Market Size, Share & Trends Analysis Report By Product (Titanium Implants, Zirconium Implants), By Region (North America, Europe, Asia Pacific, Latin America, MEA), And Segment Forecasts,2018-2024,
  2. Success Rate of the EVL Evolution Implants (SERF): A Five-Year Longitudinal Multicenter Study, Journal of Oral Implantology,
  3. Hassan Mohajerani, Roozbeh Roozbayani, Shahram Therian, "The Risk Factors in Early Failure of Dental Implants: a Retrospective Study", Journal of Density, Vol.18(4), pp.298-303
  4. Dietmar Krappinger and "Preoperative assessment of the cancellous bone mineral density of the proximal humerus using CT data." Skeletal radiology, Vol.41.3 (2012): 299-304.
  5. "Computer-assisted spine surgery: a technique for accurate transpedicular screw fixation using CT data and a 3-D optical localizer." Journal of image guided surgery Vol.1.1 (1995): 65-73.<65::AID-IGS10>3.0.CO;2-7
  6. "Mechanical properties, density and quantitative CT scan data of trabecular bone with and without metastases." Journal of biomechanics,Vol.37.4 (2004): 523-530.
  7. "Hierarchical parsing and semantic navigation of full body CT data." Medical Imaging 2009: Image Processing. Vol. 7259. International Society for Optics and Photonics, 2009.
  8. "T1/T2*-weighted MRI provides clinically relevant pseudo-CT density data for the pelvic bones in MRI-only based radiotherapy treatment planning." Acta Oncologica Vol.52.3 (2013): 612-618.
  9. "Three-dimensional volume rendering of spiral CT data: theory and method." Radiographics, Vol.19.3 (1999): 745-764.
  10. "A new accurate and precise 3-D segmentation method for skeletal structures in volumetric CT data." IEEE transactions on medical imaging, Vol.22.5 (2003): 586-598.
  11. "CT mandible with few teeth image set",
  12. "Medical Image Reader and Viewer Toolbox",