Paget's disease (3rd stage) .

  • Idiopathic, chronic, slow-developing bone disease in the elderly.
  • Abnormal resorption and deposition of osseous tissue, leading eventually to sclerosis and expansion of the affected bone.
  • The jaws are involved in 20% of the cases.
  • It can be divided into three stages:
    • first stage – Bone resorption: (diffused radiolucency/osteoporosis)
    • second stage – Osteoblastic repair (mixed radiolucent/radiopaque lesion)
    • third stage – Sclerosing phase (haphazard deposition of sclerotic bone, with the characteristic “cotton wool” appearance).
  • Other radiographic features: loss of lamina dura and obliteration of the periapical periodontal ligament, hypercementosis, external root resorption.

Differential Diagnosis

Case 1

A case of Paget disease.