title: Evaluation of root canal debridement by use of a radiopaque medium.
mesh_terms: D000704:Analysis of Variance; D003287:Contrast Media; D003646:Debridement / Q000592:standards; D005069:Evaluation Studies as Topic; D006801:Humans; D066298:In Vitro Techniques; D012390:Root Canal Therapy; D013647:Task Performance and Analysis
chemical_list: D003287:Contrast Media