Status of retained deciduous second molars in subjects with agenesis of second premolars in relation to age

Authors

  • M Bilinska DDS, PhD, Section of Orthodontics, Department of Dentistry and Oral Health, Aarhus University, Aarhus
  • M Zadurska DDS, PhD, Professor, Department of Orthodontics, Medical University of Warsaw
  • E Czochrowska DDS, PhD, Department of Orthodontics, Medical University of Warsaw

DOI:

https://doi.org/10.23804/ejpd.2023.1654

Keywords:

deciduos dentition, molars, agenesis, young patients

Abstract

AIM: To evaluate the presence and status of retained DM2 without permanent successors in relation to age. BACKGROUND: Preservation of retained deciduous second molars (DM2) can be applied to treat congenital absence of second premolars (PM2). However, the consequences of caries and progressing root resorption or infraocclusion may affect their survival. METHODS: Panoramic radiographs of individuals >10 years of age with agenesis of at least one PM2 were evaluated and divided into three groups according to age. The presence and location of retained DM2, caries/restorations, infraocclusion and root resorption were investigated. CONCLUSION: Long-term prognosis of retained DM2 without permanent successors seems uncertain, especially within the younger age group. In individuals older than 17 years, the prognosis for a healthy DM2 is favorable, if no distinct infraocclusion or extensive root resorption is present.