Development of temporomandibular ankylosis after diagnosis of Jacob’s disease: clinical and tomographic assessment
Authors: Avelar Rafael Linard , Martins Neto Roque Soares , Gaspar Bruno da Silva , Praxedes Neto Raimundo Antonio de Lima , Silva Paulo Paulo Goberlânio Barros 
Published: October 2020

Jacob's disease is a rare condition that consists of the formation of a pseudo joint structure between the mandibular coronoid process and the zygomatic bone, resulting in limited mouth opening. The disease is difficult to diagnose and etiology is uncertain. This article describes a clinical case of a 6-year-old child with limited mouth opening, which resulted in the formation of a temporomandibular ankylosis leading to complete immobility due to delayed diagnosis and treatment of the disease. A review of this pathology and the most precise imaging exams are discussed for the early and differential diagnosis of the disease.

Descriptors: Ankylosis; Temporomandibular Joint; Temporomandibular Joint Disorders.

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