Evaluating Static Bone Cysts (SBCs) Through Long-Term Volumetric Analysis Using CBCT: A Study with 6-Month Follow-Up

Area of Science:

• Dentistry
• Oral and Maxillofacial Radiology

Background:

• Salivary gland bone defects, or Stafne bone cavities (SBCs), are rare, static lesions typically found incidentally on routine imaging.
• While often asymptomatic, misdiagnosis or atypical presentations can lead to unnecessary surgical interventions.

Purpose of the Study:

• To determine the frequency and radiological subtypes of SBCs.
• To evaluate the efficacy of volumetric analysis using cone-beam computed tomography (CBCT).
• To establish CBCT's role in definitively diagnosing SBCs, potentially avoiding surgery.

Main Methods:

• The study analyzed 11 subjects with SBCs identified from 3304 panoramic radiographs.
• CBCT scans were taken at baseline and 6-month intervals, with volumetric analysis performed using OnDemand 3D software.
• Radiographic subtypes were classified based on their relationship to the mandibular canal and bucco-lingual expansion.

Main Results:

• SBCs were predominantly Type 1 (63.5%) in relation to the mandibular canal.
• The mean volume of SBCs was 332.5 mm³, ranging from 146 mm³ to 650 mm³.
• Volumetric measurements showed high inter- and intra-observer reliability, with no significant differences between baseline and 6-month intervals (p>0.05).

Conclusions:

• CBCT is a definitive diagnostic tool for SBCs, enabling accurate volumetric analysis.
• Utilizing CBCT can prevent over-diagnosis and avoid unnecessary surgical procedures, reducing patient distress.
• This study highlights CBCT's crucial role in the accurate diagnosis and management of Stafne bone cavities.