PubMed · 2009 · 51 citations · 20 references
Sinus tract in the lingual or palatal aspect of the gingiva is relatively common. Practitioners should look for signs of sinus tract during routine examination
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An evaluation of endodontically treated vertically fractured teeth
A Tamse, Z. Fuss, Joseph P. Lustig et al. · Journal of Endodontics · 1999 · 327 citations