Lower lip and mandibular duplication deformity: a case report and literature review

doi:10.19438/j.cjoms.2026.02.017

Abstract

Abstract: Craniofacial duplication, also known as diprosopus, is a rare and complex craniofacial skeletal abnormality characterized by the complete duplication of facial structures. Partial facial duplication encompasses a variety of congenital abnormalities, including duplication of the oral cavity. Treatment methods vary depending on the type of duplication, with no uniform surgical approach. This paper reported a case of a 2-year-and-7-month-old female child with varying degrees of duplication deformities in the lower lip and mandible. It elaborated on the surgical method and process in detail, and conducted a literature review and analysis on the pathogenesis and classification of this deformity.

Key words: Oral and maxillofacial region, Duplication deformity, Lower lip, Mandible

CLC Number:

R782.2

Dilidaer Taxipulati, Yao Zhitao, An Wei, Wang Ling, Li Jingtao. Lower lip and mandibular duplication deformity: a case report and literature review[J]. China Journal of Oral and Maxillofacial Surgery, 2026, 24(2): 200-204.

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