case_images: PMC6124378_01
case_images: Radiographic examination.. 
  A) Pre-operative radiograph: Bone rarefaction and root resorption in first and second primary molars;
  B) Post-operative radiograph: Pulpectomy treatment in lower second primary molar;
  C) 8 months post-operative: cessation of root resorption.
case_images: f1000research-7-16754-g0000.jpg
case_images: PMC6124378_01_f1000research-7-16754-g0000.jpg
case_images: f1
case_images: The interesting finding was a considerable amount of root resorption of the distal root of the adjacent lower first primary molar ( Figure 1A). Tokyo, Japan) ( Figure 1B). The lower first primary molar was not touched and instead monitored. Clinical examination showed no signs or symptoms, occlusal restoration was intact, and radiographic examination revealed arrested root resorption, on both molars, and an increase in the density of bone although this was not at a normal level yet ( Figure 1C).