From 2D to 3D: Construction of a 3D Parametric Model for Detection of Dental Roots Shape and Position from a Panoramic Radiograph—A Preliminary Report

Objectives. To build a 3D parametric model to detect shape and volume of dental roots, from a panoramic radiograph (PAN) of the patient. Materials and Methods. A PAN and a cone beam computed tomography (CBCT) of a patient were acquired. For each tooth, various parameters were considered (coronal and root lengths and widths): these were measured from the CBCT and from the PAN. Measures were compared to evaluate the accuracy level of PAN measurements. By using a CAD software, parametric models of an incisor and of a molar were constructed employing B-spline curves and free-form surfaces. PAN measures of teeth 2.1 and 3.6 were assigned to the parametric models; the same two teeth were segmented from CBCT. The two models were superimposed to assess the accuracy of the parametric model. Results. PAN measures resulted to be accurate and comparable with all other measurements. From model superimposition the maximum error resulted was 1.1 mm on the incisor crown and 2 mm on the molar furcation. Conclusion. This study shows that it is possible to build a 3D parametric model starting from 2D information with a clinically valid accuracy level. This can ultimately lead to a crown-root movement simulation.

[1]  Timothy J Jorgensen,et al.  Dental x‐rays and risk of meningioma , 2013, Cancer.

[2]  Takeshi Murayama,et al.  Construction of orthodontic setup models on a computer. , 2012, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[3]  M. Nunn,et al.  Root proximity as a risk factor for progression of alveolar bone loss: the Veterans Affairs Dental Longitudinal Study. , 2008, Journal of periodontology.

[4]  J Martin Palomo,et al.  Reliability and accuracy of cone-beam computed tomography dental measurements. , 2009, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[5]  L. Walford,et al.  Statistical Methods for Medical and Biological Students , 1940, The Indian Medical Gazette.

[6]  Orthodontic Treatment Simulation with Tooth Segmentation and Alignment , 2007 .

[7]  R Jacobs,et al.  Comparison between effective radiation dose of CBCT and MSCT scanners for dentomaxillofacial applications. , 2009, European journal of radiology.

[8]  Colin S Richman.  Is gingival recession a consequence of an orthodontic tooth size and/or tooth position discrepancy? "A paradigm shift". , 2011, Compendium of continuing education in dentistry.

[9]  Sandro Barone,et al.  Integration of 3D anatomical data obtained by CT imaging and 3D optical scanning for computer aided implant surgery , 2011, BMC Medical Imaging.

[10]  Akitoshi Katsumata,et al.  Measurement accuracy with a new dental panoramic radiographic technique based on tomosynthesis. , 2013, The Angle orthodontist.

[11]  J. R. Neal.  Insignia , 1951 .

[12]  Yu Qing,et al.  Bio-Information Based Segmentation of 3D Dental Models , 2008, 2008 2nd International Conference on Bioinformatics and Biomedical Engineering.

[13]  S. Yassaei,et al.  Predicting the actual length of premolar teeth on the basis of panoramic radiology. , 2010, Indian journal of dental research : official publication of Indian Society for Dental Research.

[14]  Sandro Barone,et al.  Three-dimensional point cloud alignment detecting fiducial markers by structured light stereo imaging , 2011, Machine Vision and Applications.

[15]  Colin S Richman.  Is gingival recession a consequence of an orthodontic tooth size and/or tooth position discrepancy? "A paradigm shift". , 2011, Compendium of continuing education in dentistry.

[16]  Gerald E. York,et al.  Creation of DICOM—Aware Applications Using ImageJ , 2005, Journal of Digital Imaging.

[17]  Tianmin Xu,et al.  The validity of in vivo tooth volume determinations from cone-beam computed tomography. , 2010, The Angle orthodontist.

[18]  N. Brezniak.  The clear plastic appliance: a biomechanical point of view. , 2008, The Angle orthodontist.

[19]  T. A. Larheim,et al.  Reproducibility of radiographs with the orthopantomograph 5: tooth-length assessment. , 1984, Oral surgery, oral medicine, and oral pathology.

[20]  F. Mcdonald,et al.  Assessment of the anterior maxilla in orthodontic patients using upper anterior occlusal radiographs and dental panoramic tomography: a comparison. , 2010, Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics.

[21]  Buddy D. Ratner,et al.  A paradigm shift: biomaterials that heal , 2007 .

[22]  Renaud Lebrun,et al.  Visualizing shape transformation between chimpanzee and human braincases , 2007, The Visual Computer.

[23]  Thorsten Grünheid,et al.  Dosimetry of a cone-beam computed tomography machine compared with a digital x-ray machine in orthodontic imaging. , 2012, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[24]  W. Smoker,et al.  Incidental Findings on Cone Beam Computed Tomography Images , 2012, International journal of dentistry.

[25]  Antoon F. M. Moorman,et al.  The interactive presentation of 3D information obtained from reconstructed datasets and 3D placement of single histological sections with the 3D portable document format , 2011, Development.