Guest guest Posted July 6, 2012 Report Share Posted July 6, 2012 please can someone reply 1. where does hertwigs epithelial root sheath come from? 2.preparation technique for endo...crown down/stepback/stepdown???/ 3.trauma to tooth with closed apex.in which one the tooth is more likely to maintain vitality???concussion/subluxation/intrusive/luxation/avulsion/luxation cheers Quote Link to comment Share on other sites More sharing options...
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