Retained deciduous mandibular molars in adults: a radiographic study of long-term changes

New teeth from old: treatment options for retained primary teeth

“…Root resorption was described as slow and the authors concluded that if primary lower second molars are retained until the age of 20, their prognosis is good. Other studies have found similar results 15,16 (see Fig. 3).…”

“…Given that the survival rate of some primary teeth may rival that of implants or other fi xed restorations, 15,16,26 serious consideration should be given to their retention, with or without modifi cation. If such teeth are free from pathology and have favourable coronal and root structure, they may survive for many years and may even be considered as potential bridge abutments.…”

Management of mandibular second premolar agenesis

“…Deciduous molar root resorption is negligible for several years; conservation often proves a more lasting solution that implantation 33 .…”

“…If molar infraocclusion is severe, the vertical defect will be large and some authors recommend extraction 18 . If deciduous molar integrity is unimpaired, the tooth can usefully be spared, to as a space maintainer 33 .…”

Orthodontia-implantology-prosthodontics in rare diseases: the oligodontia example

“…If the primary second molars are present at 20 years of age, their prognosis for survival in the long term is improved 5 . Studies show then the possibility of maintaining the primary molars in adults, especially primary second molars that subsequently makes it possible to delay implant therapy 21 . If, in spite of everything, they must be extracted and implant-supported solution is elected, the orthodontic and prosthetic plan will be a preparation for the implant insertion 3 .…”