Abstract

Dental literature, considering a unique syndrome of two distinct developmental disruptions; fusion and gemination teeth and morphological irregularities; external/internal root resorptions caused by trauma or disease in one dental arch was reviewed.

The PubMed and Google Scholar citations revealed only one report of fusion and internal resorption in the same arch/tooth. However, the present case report’s dental inquiry revealed a history of a geminated maxillary left lateral incisor tooth [# 10] in addition to a dental trauma more than 20 years ago, where both teeth [#s 08 & 09] were traumatized. Tooth [# 09] was avulsed and replanted back into dental alveoli under an unusual circumstance. The clinical and radiograph analysis of these two teeth revealed their enduring involvement with the external/internal root resorptions as well. Patient reported, no other significant past dental history, except routine dental visits and treatments. The clinical and radiographical evaluation, findings, and diagnosis are discussed. The proposed treatment plans for management of the unilateral geminated tooth, external/internal root resorptions and clinical problem of severe occlusal wear provided as of Fall 2020 are also described.