Categories of this blog are

Tooth vital – tooth necrotic

# teeth with MB2 present- able to cleanse and shape the MB2 – MB2 join
MB1 – teeth I consider calcified that no MB2 was found – total # of 1st
molar treated

MB2 distance from MB1 – join MB1

5-4=9

8-7-3-0-9

less than 1 mm — yes

Joined about 5mm from apex

Completed in Wheaton.  First 2 photos are CaOH