Periodontal ligament widening can be a finding which can present on OPG and facial bone CT imaging and can occur in several situations.
The normal width range is usually between 0.15-0.21 mm (may decrease with age).
Conditions associated with widening are varied and can include:
- trauma
- occlusal trauma
- orthodontic trauma
- periodontal disease
- pulpal / periapical lesions
- regional osteomyelitis
- regional tumours / tumour infiltration (rare)
- osteosarcoma / gnathic osteosarcoma
- chondrosarcoma
- lymphoma
- connective tissue disease
- radiation-related injury
- medication-related osteonecrosis of the jaw
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