Abstract
Impaction of third molar is a common developmental abnormality. However, ectopic impaction of the mandibular third molar in subcondylar region is an extremely rare condition. This report describes a case of impacted tooth in the subcondylar region without any associated pathologic condition and it’s spatial relationship to the surrounding anatomic structures using cone beam computed tomography.
Highlights
Impaction of a tooth is a situation in which an unerupted tooth is wedged against another tooth or otherwise located so that it cannot erupt normally [1]
Impacted mandibular third molars are categorized according to the anterior posterior space between the second molar and the mandibular ramus, its medial lateral position in the body of the mandible, and the position of its long axis
Final diagnosis was an ectopic impaction of the mandibular third molar in the right mandibular subcondyle
Summary
Impaction of a tooth is a situation in which an unerupted tooth is wedged against another tooth (or teeth) or otherwise located so that it cannot erupt normally [1]. Trauma, aberrant eruption and anomalous development of the tooth germ are all theories that have been postulated Their heterotrophic positions were reported to be in the condylar area, in the ascending ramus of the mandible, or in the coronoid process [2]. Unilateral or bilateral ectopic impacted third molar teeth have been reported in various parts of the mandibular ramus. This report presents an ectopic mandibular third molar in the mandibular subcondyle without any pathologic condition. Patient gives history of chronic pain since 2 years and prolonged history of occasional discomfort since early forties She consulted a host of specialties and was diagnosed as chronic bacterial sialadenitis. Coronal image showed the crown up position of the impacted tooth [Fig.3]. Sagittal image showed a well developed impacted tooth in the subcondylar region with normal follicular space [Fig.5]. Final diagnosis was an ectopic impaction of the mandibular third molar in the right mandibular subcondyle
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