After extraction, the buccal and palatal plates of the teeth #3 and 5 are found basically non-existent. When taps (6x17 mm at #3 and 4.5x20 mm at #5) are placed, large socket defects are evident (Fig.4 *).
Xin Wei, DDS, PhD, MS 1st edition 03/08/2016, last revision 03/08/2016