%0 Journal Article %T Mandibular Second Premolar with Four Canals %J Journal of Dental Materials and Techniques %I Mashhad University of Medical Sciences %Z 2322-4150 %A Ghiasi, Javad %A Javidi, Maryam %A Farhang nia, Azade %A Shayan, Elnaz %D 2015 %\ 09/01/2015 %V 4 %N 3 %P 133-136 %! Mandibular Second Premolar with Four Canals %K Four root canals %K mandibular second premolar %K three roots %R 10.22038/jdmt.2015.4600 %X 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.   %U https://jdmt.mums.ac.ir/article_4600_a3d8127617a23e1c754c09b5e9913930.pdf