3DBODY.TECH 2018 - Paper 18.037

R. d.F.V. Dornelles and N. Alonso, "New Virtual Tool for Accurate Evaluation of Facial Volume", in Proc. of 3DBODY.TECH 2018 - 9th Int. Conf. and Exh. on 3D Body Scanning and Processing Technologies, Lugano, Switzerland, 16-17 Oct. 2018, pp. 37-44, https://doi.org/10.15221/18.037.


New Virtual Tool for Accurate Evaluation of Facial Volume


Rodrigo de Faria Valle DORNELLES, Nivaldo ALONSO

Department of Plastic Surgery, University of Sao Paulo, Sao Paulo, Brazil


Objective: The aim of this study is to develop a protocol to accurately measure facial volume through three-dimensional (3D) technology and virtual tools using free software.
Methods: Eighteen cadaveric hemifaces were evaluated. A tissue expander was inserted in the anterior maxilla region and 3D digital meshes of a face side were captured by a scanner at 4 stages of controlled injection of saline solution into the expander (0, 3, 6, and 10 mL). Four virtual models of every face side were aligned in relation to the reference model (0 mL). A virtual cube (343 cm3) was added to the scene overlapping the aligned meshes. Volume difference from the virtual cube external section related to the mesh surface was calculated.
Results: Strong correlation between measured virtual volume and real expanded volume was observed (r, 0.997-0.999; P <0.001). Significance difference of virtually measured expanded hemifacial volume with and without expander was verified (P <0.001).
Conclusions: Protocol using 3D technology and virtual tools with Blender free software enabled precise calculation of volumetric facial variation in cadavers.
Keywords: three-dimensional image; face; plastic surgery; computer-aided image processing; photogrammetry; software.


Full paper: 18037dornelles.pdf
Proceedings: 3DBODY.TECH 2018, 16-17 Oct. 2018, Lugano, Switzerland
Pages: 37-44
DOI: 10.15221/18.037

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