In co-operation with dentists at the Lithuanian University of Health Sciences, our Research Centre engineers have conducted a groundbreaking research on root canals. The purpose of the study was to digitize root canals prepared for glass fibre-reinforced composite posts using an industrial computed tomography system and calculate the area of filling material remaining on the walls.
The root canals have been digitized using Nikon XT H 225, a powerful computed tomography (CT) system with spatial resolution of 7 µm. CT data sets were segmented and rendered in 3D models using high-end software packages for the visualization and analysis, CT 3D Pro and VGStudio MAX 2.2. In each root canal, the dentin was separated from the filling material and, following comparative analysis, total area of remaining filling material on the walls of the root canals. Furthermore, each root canal was divided into two equal sections (upper and bottom) and the percentage of the area of the remaining filling material in each section has been calculated.
Based on the findings of the study, the researchers at the Lithuanian University of Health Sciences intend to define the dependence of extraction strength of the glass fibre-reinforced post on the area of the remaining filling material on the walls of root canal. The findings of the study may also be useful for dentists in assessing how efficiently the root canals have been cleaned with standard instruments. Currently, the researchers of both the Lithuanian University of Health Sciences and Ortho Baltic are preparing two mutual scientific publications.