Utilising previous radiographs: the principle of dose optimisation

Area of Science:

• Dentistry
• Radiology
• Oral Surgery

Background:

• Dental imaging is a crucial diagnostic tool, but increased usage raises healthcare costs and patient radiation exposure.
• The International Commission on Radiological Protection emphasizes dose reduction principles: Justification, Optimization, and Limitation.

Observation:

• A panoramic radiograph during a third molar extraction revealed an incidental radiolucent defect near the mandibular canal.
• The lesion's location prompted further investigation beyond the typical Stafne bone cavity presentation.
• Reviewing a 5-year-old CT angiogram identified a lingual bone defect with submandibular gland extension, confirming Stafne bone cavity.

Findings:

• Stafne bone cavity, a common benign bone defect, was diagnosed by correlating current and prior imaging.
• Previous imaging was essential in correctly identifying the lesion's nature and extent.
• The submandibular gland's extension into the lingual bone defect confirmed the diagnosis.

Implications:

• Accessing prior imaging studies is critical for accurate diagnosis and avoiding unnecessary procedures.
• Reviewing historical imaging aids in adhering to radiation safety principles by preventing repeat examinations.
• This case underscores the value of comprehensive patient history and imaging review in dental practice.