Damante J H, Fleury R N
Department of Stomatology, Lauro de Souza Lima Hospital of Dermatological Diseases, Brazil.
Pesqui Odontol Bras. 2001 Jul-Sep;15(3):238-46. doi: 10.1590/s1517-74912001000300010.
The aim of this study was to verify the relationship between the radiographically measured width of the pericoronal space (PS) and the microscopic features of the follicle in order to contribute to the diagnosis of small dentigerous cysts and paradental cysts. One hundred and thirty unerupted teeth (UT) and thirty-five partially erupted teeth (PET) were radiographed and extracted. The radiographic analysis consisted of measuring the width of the PS. The results of the radiographic analysis were compared with those of the histopathologic examination of the dental follicle. The width of the PS ranged from 0.1 to 5.6 mm. The most frequently observed lining of the follicles was a reduced enamel epithelium (REE) (68.4%) in UT and a hyperplastic stratified squamous epithelium (HSSE) (68.5%) in PET. Inflammation was present in 36.1% of the UT and in 82.8% of the PET. There was a statistically significant association between the presence of stratified squamous epithelium (SSE) and PS enlargement for UT (p < 0.05). There was a tendency of association between inflammation and PS enlargements in PET and, possibly, in UT, despite the absence of statistical significance. Surgically, we did not detect bone cavitation or luminal cystic contents in pericoronal spaces smaller than 5.6 mm. We suggest that the first radiographic diagnosis for a PS enlargement, in most of the routine clinical cases, should be of "inflammation of the follicle". The hypothesis of "dentigerous cyst" or "paradental cyst" is suggested as a second diagnosis. The final differential diagnosis between a small dentigerous or a paradental cyst and a pericoronal follicle depends on clinical and/or surgical findings, such as the presence of bone cavitation and cystic content.
本研究的目的是验证影像学测量的冠周间隙（PS）宽度与滤泡微观特征之间的关系，以有助于小型含牙囊肿和牙周囊肿的诊断。对130颗未萌出牙齿（UT）和35颗部分萌出牙齿（PET）进行影像学检查并拔除。影像学分析包括测量PS的宽度。将影像学分析结果与牙滤泡的组织病理学检查结果进行比较。PS的宽度范围为0.1至5.6毫米。在UT中，最常观察到的滤泡内衬是釉质上皮减少（REE）（68.4%），在PET中是增生性复层鳞状上皮（HSSE）（68.5%）。36.1%的UT和82.8%的PET存在炎症。UT中分层鳞状上皮（SSE）的存在与PS增大之间存在统计学显著关联（p < 0.05）。尽管缺乏统计学意义，但PET以及可能在UT中，炎症与PS增大之间存在关联趋势。在手术中，我们在小于5.6毫米的冠周间隙中未检测到骨腔或腔内囊性内容物。我们建议，在大多数常规临床病例中，对于PS增大的首次影像学诊断应是“滤泡炎症”。“含牙囊肿”或“牙周囊肿”的假设作为第二种诊断提出。小型含牙囊肿或牙周囊肿与冠周滤泡之间的最终鉴别诊断取决于临床和/或手术发现，如骨腔和囊性内容物的存在。
