Challenging and unpredictable root-canal networks call for versatile obturation solutions. After cleaning and shaping, obtaining a three-dimensional fill to prevent microleakage prior to tooth restoration is critical to case success. The Channels^® Obturation System, with its advanced core obturators, matches each C-Series file to provide the clinician with the perfect fit. Each Channels obturator is precisely coated with just the right amount of gutta percha, not requiring any trimming. They are extremely radiopaque and compatible with most heating ovens. Calibration rings make working length determination easy.