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Quintessence Int 48 (2017), No. 3     22. Feb. 2017
Quintessence Int 48 (2017), No. 3  (22.02.2017)

Page 225-230, doi:10.3290/j.qi.a37643, PubMed:28168238


Numb chin syndrome associated with vertical root fracture and odontogenic infection
Brooks, John K. / Schwartz, Kevin G. / Ro, Alvin S. / Lin, Chang-Ching D.
Numb chin syndrome (NCS) is a multifactorial neuropathic disorder associated with paresthesia to the chin, lip, and oral mucosa, particularly arising as a sequela to various dental-related procedures or infections in the mandible. Timely elucidation of the underlying etiology is of paramount importance as the presentation of NCS could serve as a harbinger of malignancy or metastatic disease. This report describes an unusual case of NCS developing synchronously with a vertical root fracture and odontogenic infection in a mandibular first molar. Clinicians should consider the inclusion of a vertical root fracture as plausible cofactor for the development of NCS.

Keywords: cracked tooth, inferior alveolar nerve, odontogenic infection, paresthesia
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