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An apical fistula develops at the tooth #7 lately (Fig.1 >). There is purulent discharge from the distobuccal sulcus (*) when an anesthetic is being infiltrated. This suggests severe destruction of the buccal plate. The tooth is incisally displaced.
Xin Wei, DDS, PhD, MS 1st edition 04/20/2016, last revision 09/19/2018