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A 47-year-old lady lives out of town and presents to clinic with chief complaint "lower left back tooth easily bleeding with food impaction". Dental history and examination reveals failure of endo retreat of the tooth #19 (Fig.1), buccal gingival swelling (S), and open access (A).
Xin Wei, DDS, PhD, MS 1st edition 02/15/2015, last revision 02/16/2015