A submerged deciduous tooth, also called an ankylosed tooth, is an ectopic eruption wherein the tooth cannot erupt from the occlusion plane. Normally, the deciduous molar is involved. This article reports a clinical case of a submerged mandibular deciduous first molar combined with horizontally impacted mandibular first premolar. We focus on the clinical diagnosis and treatment of this case and provide a discussion by reviewing similar literature.
