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A 29-year-old man has pain in the upper left quadrant. It appears that the tooth #14 has endo and post failure with palatal fistula (Fig.1,2). After extraction, the palatal wall is found to be low. Additional anesthetic is added to remove granulation tissue. In fact, PRF or GEM21S is indicated for hard tissue regeneration. Fistula is a sign for biologic. Preop CT should be taken.
Xin Wei, DDS, PhD, MS 1st edition 05/22/2019, last revision 04/13/2020