Hi drs) im a student. i want to ask about tooth's canals. is that good to fill them till the end ( sometimes outside root canal) during the treatment?

Fill to the end: We always try to keep the gutta percha, the filling material inside the apex (end) of the root. However, in the event that it does go beyond the apex, there is usually no biologic reaction to the gutta percha. You may experience some discomfort to biting and chewing, but that should subside in a few days.

Always: When root canal treatment is done, all the nerve tissue should be taken out and the canals cleaned, shaped and filled to the root tip. However, this is half the story. The other half is that root canals should be sealed from the top as well, in order to avoid reinfection. If the rc filling goes outside of the root, a small amount is no issue. If it is a lot, then surgical removal may be needed.

RCT success: Most important criteria are: 1. Make sure you find all the canals 2. Completely instrument and shape canals to apex. 3. Irrigate, sterilize and dry 4. Get a good measurement. Orifice may actually be at or short of anatomic apex on x-ray. 5. Completely condense canals. I starting using rotary and warm gutta percha technique. (love it) slight overfill usually not significant.