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

3-1

3-2-1-0-4

This is one of cases I went back through charts and do not remember
well.  Notes stated MB2 fin but may not be able to cleanse and shape.  This is prior to when I took routine angled PA for blog.
Completed in Mendota