مقالهmandibular second premolar with four canals
javad ghiasi 1 postgraduate student, department of endodontics, faculty of dentistry, mashhad university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences), maryam javidi 2 professor, dental materials research center, department of endodontics , mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences), azade farhang nia postgraduate student, department of prosthodontics, faculty of dentistry, mashhad university of medical sciences, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences), elnaz shayan postgraduate student, department of endodontics, faculty of dentistry, mashhad university ofسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)
چکیده
a mandibular second premolar with four canals is an interesting example of anatomic variations. this report describes a case of a mandibular second premolar with three roots and four canals (one mesiobuccal, two distobuccal and one lingual). the canals were prepared using k-files and irrigated with naocl (5.25%) and normal saline as the final irrigant. the canals were filled laterally with gutta percha and ah26 sealer (de trey, dentsply, switzerland). this case shows a rare anatomic configuration and points out the importance of looking for additional canals.