Research: Your professor expects you to do your own research, not have someone do it for you. I would suggest you look in Endodontic text books or search Pub Med on your school's library.
Answered 11/21/2014
3.6k views
Shamrock preparation: In Endodontics it is most important that as much natural crown structure be maintained as possible. Shamrock preparation is modified outline form to accommodate the instrument (e.g. pro-taper file) unrestrained in the severely curved mesial canal to preserve instrument separation. Take care and good luck.
Answered 10/27/2014
3.6k views
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