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Fig.3: The septum (*) is somewhat round on the top between mesial and distal sockets (1,2) immediately after cosmetic or atraumatic extraction. The septum of the round top makes it difficult to insert a round osteotome for bone expansion.
Upper left is an inset (an illustration of the septum and sockets).
Xin Wei, DDS, PhD, MS 1st edition 03/19/2013, last revision 07/07/2018