This standard specifies the dental root canal H-file (hereinafter referred to as the "H-file"), which is used to enlarge the root canal by traction movement (raking operation).
JIS T 5212:1993 history
2014JIS T 5221-1:2014 Dentistry -- Root-canal instruments -- Part 1: General requirements and test methods
2009JIS T 5217-1:2009 Dental root-canal instruments -- Part 1: Files, reamers, barbed broaches, rasps, paste carriers, explorers and cotton broaches