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Use of dental models to quantify tooth movement:
To accurately measure tooth displacements produced by an orthodontic force system, we have developed a novel geometric technique using 3D laser scans of dental models. The technique includes a geometric optimization algorithm, Iterative Closest Point (ICP), which first precisely aligns the scanned 3D polygon mesh datasets of the casts and then iteratively computes the optimal transformation that represents the displacement of a particular tooth. The purpose is to use unchanged anatomical structures as the references for quantifying tooth displacements. [More details]

 

 

  

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