Abstract
Decalcification is an undesirable effect that can arise during orthodontic treatment. In digital photographs, it appears as white spot lesions, i.e. white spots on the tooth surface. To asses the extent of demineralization in a tooth, quantitative light-induced fluorescence (QLF) is used. We propose a method to match digital photographs and QLF images of decalcified teeth, based on the idea of curve-to-image matching. It extracts a curve representing the shape of the tooth from the QLF image and aligns it to the photo. The registration problem is formulated as minimization problem where the objective functional consists of a data term and a higher order, linear elastic prior for the deformation. The data term is constructed using the signed distance function of the tooth region shown in the photo, which is determined in a pre-processing step by classifying the photo into tooth and non-tooth regions. The resulting minimization problem is reformulated as a nonlinear least-square problem and solved numerically using Gauss-Newton. The evaluation is based on 150 image pairs captured from 32 patients. The correctness of the matching is confirmed by visual inspection of dental experts and the alignment improvement quantified using mutual information. The curve-to-image matching idea can be extended to surface-to-voxel tasks.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Ousehal L, Lazrak L, Es-Said R, et al. Evaluation of dental plaque control in patients wearing fixed orthodontic appliances: a clinical study. Int Orthod. 2011;9:140–55.
Palamara J, Phakey PP, Rachinger WA, et al. Ultrastructure of the intact surface zone of white spot and brown spot carious lesions in human enamel. J Oral Pathol. 1986;15(1):28–35.
Gorelick L, Geiger AM, Gwinnett AJ. Incidence of white spot formation after bonding and banding. Am J Orthod. 1982;81(2):93–8.
Srivastava K, Tikku T, Khanna R, et al. Risk factors and management of white spot lesions in orthodontics. J Orthod Sci. 2013;2(2):43–9.
Heinrich-Weltzien R, Kühnisch J, Ifland A, et al. Detection of initial caries lesions on smooth surfaces by quantitative light-induced fluorescence and visual examination: an in vivo comparison. Eur J Oral Sci. 2005;113(6):494–8.
Berkels B, Deserno TM, Ehrlich EE, et al. Non-rigid contour-to-pixel registration of photographic and quantitative light-induced fluorescence imaging of decalcified teeth. SPIE Med Imaging. 2016;Accepted.
Zach C, Gallup D, Frahm JM, et al. Fast global labeling for real-time stereo using multiple plane sweeps. Proc Int Fall Workshop Vis Model Vis. 2008; p. 243–52.
Berkels B, Cabrillo I, Haller S, et al. Co-registration of intra-operative photographs and pre-operative MR images. Int J Comput Assist Radiol Surg. 2014;9(3):387–400.
Gratton S, Lawless AS, Nichols NK. Approximate gauss-newton methods for nonlinear least squares problems. SIAM J Optim. 2007;18(1):106–32.
Chumchob N, Chen K. A robust affine image registration method. Int J Num Anal Model. 2009;6(2):311–34.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Berkels, B., Deserno, T., Ehrlich, E., Fritz, U., Sirazitdinova, E., Tatano, R. (2016). Curve-to-Image Based Non-Rigid Registration of Digital Photos and Quantitative Light-Induced Fluorescence Images in Dentistry. In: Tolxdorff, T., Deserno, T., Handels, H., Meinzer, HP. (eds) Bildverarbeitung für die Medizin 2016. Informatik aktuell. Springer Vieweg, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-49465-3_16
Download citation
DOI: https://doi.org/10.1007/978-3-662-49465-3_16
Publisher Name: Springer Vieweg, Berlin, Heidelberg
Print ISBN: 978-3-662-49464-6
Online ISBN: 978-3-662-49465-3
eBook Packages: Computer Science and Engineering (German Language)