272 - Unilateral Tooth-Specific Developmental Delay Affecting Mandibular Molars: A Case Report

Introduction: Tooth-specific developmental delay (TSDD) affecting first and second permanent molars has been described as 9-year- and 15-year-molars, respectively, with eruption occurring approximately three years delayed from normal. Literature reports 63 cases of TSDD, commonly affecting females as a bilateral finding affecting maxillary first permanent molars.

Case Report: A sixteen-year-old male presented with a medical history of otitis media and hypertrophic adenoids with no allergies. Patient’s height, weight, and BMI were normal. TSDD was noted affecting mandibular left first and second permanent molars. Other teeth followed normal eruption patterns and timings. The presence of unilateral TSDD finding in a male patient affecting the mandibular arch is of note. This case report provides valuable clinical findings associated with TSDD.

Conclusion: TSDD in this case presented with delayed root development. Hence, this case report supports conservative orthodontic space management to prevent supra-eruption of opposing teeth, as opposed to previously recommended surgical management.

Identify Supporting Agency and Grant Number: Research supported by Children's Hospital Colorado