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Direct estimation of human trabecular bone stiffness using cone beam computed tomography
Linköping Univ, Dept Med & Hlth Sci, Campus US, S-58185 Linköping, Sweden.;Linkoping Univ, Ctr Med Image Sci & Visualizat CMIV, Campus US, S-58185 Linkoping, Sweden..
KTH, Skolan för kemi, bioteknologi och hälsa (CBH).
Vienna Univ Technol, Inst Lightweight Design & Struct Biomech, Vienna, Austria..
Karolinska Univ Hosp, Karolinska Inst, Dept Clin Sci Intervent & Technol, Stockholm, Sweden.;Karolinska Univ Hosp, Dept Radiol, Stockholm, Sweden..
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2018 (engelsk)Inngår i: Oral surgery, oral medicine, oral pathology and oral radiology, ISSN 2212-4403, E-ISSN 2212-4411, Vol. 126, nr 1, s. 72-82Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Objectives. The aim of this study was to evaluate the possibility of estimating the biomechanical properties of trabecular bone through finite element simulations by using dental cone beam computed tomography data. Study Design. Fourteen human radius specimens were scanned in 3 cone beam computed tomography devices: 3-D Accuitomo 80 (J. Morita MFG., Kyoto, Japan), NewTom 5 G (QR Verona, Verona, Italy), and Verity (Planmed, Helsinki, Finland). The imaging data were segmented by using 2 different methods. Stiffness (Young modulus), shear moduli, and the size and shape of the stiffness tensor were studied. Corresponding evaluations by using micro-CT were regarded as the reference standard. Results. The 3-D Accuitomo 80 (J. Morita MFG., Kyoto, Japan) showed good performance in estimating stiffness and shear moduli but was sensitive to the choice of segmentation method. Newtom 5 G (QR Verona, Verona, Italy) and Verity (Planmed, Helsinki, Finland) yielded good correlations, but they were not as strong as Accuitomo 80 U. Morita MFG., Kyoto, Japan). The cone beam computed tomography devices overestimated both stiffness and shear compared with the micro-CT estimations. Conclusions. Finite element-based calculations of biomechanics from cone beam computed tomography data are feasible, with strong correlations for the Accuitomo 80 scanner a. Morita MFG., Kyoto, Japan) combined with an appropriate segmentation method. Such measurements might be useful for predicting implant survival by in vivo estimations of bone properties.

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ELSEVIER SCIENCE INC , 2018. Vol. 126, nr 1, s. 72-82
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URN: urn:nbn:se:kth:diva-232242DOI: 10.1016/j.oooo.2018.03.014ISI: 000436514800015PubMedID: 29735401Scopus ID: 2-s2.0-85046658791OAI: oai:DiVA.org:kth-232242DiVA, id: diva2:1233976
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QC 20180720

Tilgjengelig fra: 2018-07-20 Laget: 2018-07-20 Sist oppdatert: 2018-07-20bibliografisk kontrollert

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Klintström, BenjaminSmedby, ÖrjanMoreno, Rodrigo

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