title: The influence of the method of canal preparation on the quality of apical and coronal obturation.
mesh_terms: D001345:Autoradiography; D002132:Calcium Radioisotopes; D005069:Evaluation Studies as Topic; D006801:Humans; D066298:In Vitro Techniques; D012389:Root Canal Obturation / Q000379:methods; D012390:Root Canal Therapy / Q000379:methods*
chemical_list: D002132:Calcium Radioisotopes