With the aid of a manual tube cutter, roots were divided according to the orientation of the clefts, two fragments were thus obtained lingual and vestibular with Lomo stereoscopic microscope, digital pictures were taken at 20x, and with AutoCard 2009 Autodesk program the area occupied by the CaOH2 remnant in each third was measured.
Las raíces fueron divididas siguiendo la orientación de las hendiduras con un cortatubos manual, y se obtuvieron 2 fragmentos vestibular y lingual. Se tomaron fotografías digitales del microscopio estereoscópido Lomo a 20x y se midió el área ocupada por CaOH2 remanente a través del programa AutoCad2009 Autodesk en cada tercio.