This standard specifies the dental root canal opening enlargement G-type drill (hereinafter referred to as "G-type drill") used for root canal opening enlargement of teeth.
JIS T 5215:1995 history
2015JIS T 5221-2:2015 Dentistry -- Endodontic instruments -- Part 2: Enlargers
2009JIS T 5217-2:2009 Dental root-canal instruments -- Part 2: Enlargers