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Morphologic analysis of odontogenic cysts with computed tomography
K Yoshiura1, Y Higuchi, K Araki
1Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kyushu University, Tokyo, Japan.
Summary
Odontogenic cyst morphology varies with location and keratinization. Keratinized dentigerous cysts share features with primordial cysts, suggesting reclassification.
Area of Science:
- Oral pathology
- Radiology
- Histopathology
Background:
- Odontogenic cysts exhibit diverse morphologic characteristics.
- Understanding factors influencing cyst morphology is crucial for diagnosis.
Purpose of the Study:
- To analyze the impact of lesion site and epithelial keratinization on odontogenic cyst morphology.
- To identify key determinants of cyst shape and structure.
Main Methods:
- Computed tomography (CT) analysis of 92 odontogenic cysts (primordial, dentigerous, radicular).
- Assessment of cyst dimensions, CT patterns (unilocular, lobulated, multilocular), sclerotic rim, and cortex.
- Histological evaluation for epithelial keratinization.
Main Results:
- Primordial cysts showed larger dimensions and higher long/short ratios compared to dentigerous and radicular cysts.
- Maxillary cysts were generally round; mandibular cysts exhibited more varied shapes.
- Multilocular patterns were more frequent in keratinized mandibular primordial cysts and keratinized dentigerous cysts.
Conclusions:
- Lesion site and keratinization significantly influence odontogenic cyst morphology.
- Keratinized dentigerous cysts exhibit characteristics overlapping with primordial cysts (odontogenic keratocysts), warranting consideration for reclassification.