Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 32578
A Method for Improving Dental Crown Fit-Increasing the Robustness

Authors: Kero T., Söderberg R., Andersson M., Lindkvist L.


The introduction of mass-customization has enabled new ways to treat patients within medicine. However, the introduction of industrialized treatments has also meant new obstacles. The purpose of this study was to introduce and theoretically test a method for improving dental crown fit. The optimization method allocates support points in order to check the final variation for dental crowns. Three different types of geometries were tested and compared. The three geometries were also divided into three sub-geometries: Current method, Optimized method and Feasible method. The Optimized method, using the whole surface for support points, provided the best results. The results support the objective of the study. It also seems that the support optimization method can dramatically improve the robustness of dental crown treatments.

Keywords: Bio-medicine, Dentistry, Mass-customization, Optimization and Robust design.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1539


[1] Andersson M, Odén A. A new all-ceramic crown. A dense-sintered, high-purity alumina coping with porcelain. Acta Odontol Scand. 1993;1:59-64.
[2] Kero T, Söderberg R, Andersson M, Lindkvist L. Process optimization regarding geometrical variation and sensitivity involving dental drilland implant-guided surgeries. Int J Biomed Sci 2007;4:237-43.
[3] Schep NWL, Broeders IAMJ, Werken CVD. Computer assisted orthopaedic and trauma surgery state of the art and future perspectives. Int. J. Care Injured 2003;34:299-306.
[4] Duret F, Bloudin JL, Duret B. Cad/cam in dentistry. J Am Dent Assoc 1998;117:715-20.
[5] Mormann WH, Brandestini M, Lutz F, Barbakow F, Gotsch T. Cad-cam ceramic inlays and onlays: A case report after 3 years in place. J Am Dent Assoc 1990;120:517-20.
[6] Rekow ED. Cad/cam for dental restorations-some of the curious challenges. IEEE Trans Biomed Eng 1991;38:314-8.
[7] Dahlmo K, Andersson M, Gellerstedt M, Karlsson S. On a new method to assess the accuracy of a cad program. Int J Prosthodont 2001;3:276- 83.
[8] Jaeger ND, Pallav P, Feilzer AJ. The influence of design parameters on the fea-determined stress distribution in cad-cam produced all-ceramic dental crowns. Dent Mater 2005;21:242-51.
[9] Kero T, Söderberg R, Andersson M. Method for analyzing probe scanned surfaces 10th WSEAS International conference on automatic control, modelling & simulation (ACMOS'08) 27-30 May 2008.
[10] Persson A, Andersson M, Oden A, Sandborgh-Englunda G. Computer aided analysis of digitized dental stone replicas by dental cad/cam technology. Dent Mater 2008;8:1123-30.
[11] Pfeiffer J. Dental cad/cam technologies: The optical impression (ii). Int J Comput Dent 1999;1:65-72.
[12] Christensen G. In office cad/cam milling restorations: The future? J Am Dent Assoc 2008;1:83-5.
[13] Ender A, Wiedhahn K, Mormann WH. Chairside multi-unit restoration of a quadrant using the new cerec 3d software. Int J Comput Dent 2003;1:89-94.
[14] Kokubo Y, Ohkubo V, Tsumita M, Miyashita A, Vult Von Steyern P, Fukushima S. Clinical marginal and internal gaps of procera allceram crowns. J Oral Rehabil 2005;7:526-30.
[15] Wen MY, Mueller HJ, Chai J, Wozniak WT. Comparative mechanical property characterization of 3 all-ceramic core materials. Int J Prosthodont 1999;12:534-41.
[16] Luthardt RG, Koch R, Rudolph H, Walter MH. Qualitative computer aided evaluation of dental impression in vivo. Dent Mater 2006;22:66- 76.
[17] Söderberg R, Lindkvist L, Carlson J. Virtual geometry assurance for effective product realization. Nord PLM- 06 25-26 January 2006.
[18] Söderberg R, Lindkvist L, Carlson J. Managing physical dependencies through location system design. J Eng Design 2006;4:325-46.
[19] Kero T, Lindkvist L, Söderberg R, Andersson M. Variation simulation toolkit for virtual verification of dental drill-guided surgeries. III International Congress on Computational Bioengineering 333-9, 2007.
[20] Wang M, Pelinescu D. Optimizing fixture layout in a point-set domain. IEEE T ROBOTIC AUTOM 2001;3:312-23.