摘要：The main issue to be faced to get size estimates of 3D modification of the dental canal
after endodontic treatment is the co-registration of the image stacks obtained through micro
computed tomography (micro-CT) scans before and after treatment. Here quantitative analysis of
micro-CT images have been performed by means of new dedicated software targeted to the analysis
of root canal after endodontic instrumentation. This software analytically calculates the best superposition
between the pre and post structures using the inertia tensor of the tooth. This strategy avoid
minimization procedures, which can be user dependent, and time consuming. Once the co-registration
have been achieved dimensional measurements have then been performed by contemporary
evaluation of quantitative parameters over the two superimposed stacks of micro-CT images. The
software automatically calculated the changes of volume, surface and symmetry axes in 3D occurring
after the instrumentation. The calculation is based on direct comparison of the canal and canal
branches selected by the user on the pre treatment image stack.
关键词：microtomography, endodontic root canal instrumentation, digital imaging analysis.
