Composite 19 MO prep using 330 and 245

This demonstration was done for a student who wanted to have a definitive preparation for reference. She is taking an exam where they will only give her the 330 and 245 burs - and this makes things more challenging than if you can use a straight fissure bur for the gingival floor. I show how to use both together to provide the safest approach to refining the gingival margin.