Mourão Carlos Fernando de Almeida Barros, Miranda Águida Maria Menezes Aguiar, Santos Eduardo José da Costa, Pires Fábio Ramôa
Oral Surgery, Estácio de Sá University, Rio de Janeiro, RJ, Brazil.
Braz Dent J. 2013;24(2):157-62. doi: 10.1590/0103-6440201302091.
The aim of this study was to report the frequency and clinical-radiological features of cases of lingual cortical mandibular bone depressions (LCMBD) diagnosed in consecutive panoramic radiographs and cone-beam computed tomography (CBCT) scans from a Brazilian population. The methods included a retrospective analysis of consecutive panoramic radiographs, charts from the Oral Medicine clinic and consecutive CBCT scans. All cases diagnosed as LCMBD were selected and clinical-radiological data were retrieved from the clinical charts and by the analysis of the image exams. Twenty LCMBD cases diagnosed in 18 patients were found, including 2 from 3,000 consecutive panoramic radiographs (0.07%), 6 from 2,421 Oral Medicine patients (0.25%) and 10 from 1,684 CBCT scans (0.59%). The 18 patients had a mean age of 51.5 years and 13 were males. Two patients presented bilateral lesions. Fourteen images (70%) were classified as well-defined. Eighteen affected the posterior area of the mandible and two affected the anterior mandible. Size of the lesions was larger in younger patients. In conclusion, there seemed to be a considerable radiological heterogeneity when comparing the LCMBD cases and it seemed that the images decreased in size with the increase of patient's age.
本研究的目的是报告在巴西人群的连续全景X线片和锥形束计算机断层扫描（CBCT）中诊断出的舌侧皮质下颌骨凹陷（LCMBD）病例的发生率及临床放射学特征。方法包括对连续全景X线片、口腔内科门诊病历以及连续CBCT扫描进行回顾性分析。选取所有诊断为LCMBD的病例，并从临床病历及影像检查分析中获取临床放射学数据。在18例患者中发现了20例LCMBD病例，其中2例来自3000例连续全景X线片（0.07%），6例来自2421例口腔内科患者（0.25%），10例来自1684例CBCT扫描（0.59%）。18例患者的平均年龄为51.5岁，其中13例为男性。2例患者出现双侧病变。14张图像（70%）被归类为边界清晰。18例病变累及下颌骨后部区域，2例累及下颌骨前部。病变大小在年轻患者中更大。总之，比较LCMBD病例时似乎存在相当大的放射学异质性，并且病变图像似乎随着患者年龄的增加而减小。
