4Braun RJ, Lehman J. A dermatologic lesion resulting from a mandibular molar with periradicular pathosis [ J ]. Oral Surg Oral Med Oral Pathol, 1981, 52(2) :210 -212.
5Mittal N, Gupta P. Management of extra oral sinus cases : A clinical dilemma[J]. J Endod, 2004, 30(7) :541 -547.
6Kishore Kumar RV, Devireddy SK, Gali RS, et al. Cutane- ous sinuses of cervicofacial region: A clinical study of 200 cases[J]. J Maxillofae Oral Surg, 2012, 11 (4):411 - 415.
7Bodner L, Manor E, Joshua BZ, et al. Cutaneous sinus tract of dental origin in children A report of 28 new ca- ses[J]. Pediatr Dermatol, 2012, 29(4):421 -425.
8Sheehan DJ, Potter B J, Davis LS. Cutaneous draining sinus tract of odontogenic origin: Unusual presentation of a chal- lenging diagnosis [ J]. South Med J, 2005, 98 (2) : 250 - 252.
9Cohenca N, Karni S, Rotstein I. Extraoral sinus tract misdi- agnosed as an endodontic lesion [ J ]. J Endod, 2003, 29 (12) :841 -843.
10Bai J, Ji AP, Huang MW. Submental cutaneous sinus tract of mandibular second molar origin[ J]. Int Endod J, 2014, 47(12) :1185 - 1191.
