Almeida-Barros Renata Quirino de, Abilio Vanessa Maria Freire, Yamamoto Angela Toshie Araki, Melo Daniela Pita de, Godoy Gustavo Pina, Bento Patricia Meira
Gen Dent. 2015 Nov-Dec;63(6):e5-e10.
This research aimed to compare the efficacy of digital panoramic radiography (DPR) with that of cone beam computed tomography (CBCT) for delineation of odontogenic and nonodontogenic tumors. From November 2009 through March 2011, 23 tumors in the maxillomandibular complex were diagnosed by histopathological examination. All DPRs and CBCTs were obtained and analyzed by a single previously calibrated radiologist, who considered the following radiographic aspects: clarity of the lesion edges, relation with dental elements, involvement of adjacent anatomical structures, cortical bone expansion and disruption, and, if present, type of involved anatomical structures and site of bone expansion and disruption. Of 23 patients, 15 (65.2%) were male and 8 (34.8%) were female. The tumor was classified as odontogenic in 73.9% of patients and nonodontogenic in 26.1% of patients. Analysis revealed that 56.5% of the tumors were located in the mandible, 34.8% in the maxilla, and 8.7% in both arches. For all analyzed variables, CBCTs offered more accurate details than did DPRs. Panoramic radiography should not be the examination of choice to visualize lesions in the maxillomandibular complex.
本研究旨在比较数字化全景X线摄影（DPR）与锥形束计算机断层扫描（CBCT）在描绘牙源性和非牙源性肿瘤方面的效能。从2009年11月至2011年3月，通过组织病理学检查诊断出23例颌面部复合区域的肿瘤。所有DPR和CBCT图像均由同一位预先校准的放射科医生获取并分析，该医生考虑了以下影像学特征：病变边缘的清晰度、与牙体结构的关系、相邻解剖结构的累及情况、皮质骨的膨胀和破坏情况，以及（若存在）累及的解剖结构类型和骨膨胀及破坏的部位。23例患者中，15例（65.2%）为男性，8例（34.8%）为女性。73.9%的患者肿瘤被分类为牙源性，26.1%的患者肿瘤被分类为非牙源性。分析显示，56.5%的肿瘤位于下颌骨，34.8%位于上颌骨，8.7%位于上下颌骨。对于所有分析变量，CBCT提供的细节比DPR更准确。全景X线摄影不应作为观察颌面部复合区域病变的首选检查方法。
