Mandibular lateral incisor–first premolar transposition in early mixed dentition: a rare case

• Published in: Romanian journal of morphology and embryology 2023-07, Vol.64 (3), p.431-436
• Main Authors: Andrei, Oana Cella, Dinescu, Mirela Ileana, Farcaşiu, Cătălina, Bisoc, Adriana, Tărlungeanu, Daniela Ioana, Mărgărit, Ruxandra
• Format: Article
• Language: English
• Subjects: Case Report
• ISSN: 1220-0522; 2066-8279
• DOI: 10.47162/RJME.64.3.15

Dental transposition is an anomaly of eruption which is usually seen in the maxilla and rarely in the mandible. The mandibular lateral incisor’s transposition with the permanent canine has a prevalence of less than 0.03%. The following case presents an even rarer situation, of a right lateral mandibular incisor that erupted in the place of the first premolar, in transposition with the temporary canine. In the first phase, a series of extractions have been performed, to ensure the necessary free space for moving the lateral incisor closer to its appropriate place, and after that a fixed orthodontic appliance was used. The biomechanics for intra-arch tooth movement was ingenious enough to ensure a perfect alignment of all permanent teeth and a functional Class I canine and molar final occlusion. Early intervention and successful move of the permanent canine in its correct position ensured the functionality of the mandibular movements and a good long-term prognosis.