Newton J P, Abel R W, Lloyd C H, Yemm R
J Oral Rehabil. 1987 Mar;14(2):193-202. doi: 10.1111/j.1365-2842.1987.tb00709.x.
With the introduction of acrylic resin denture base materials to the dental profession, radiolucency was recognized as a significant deficiency at an early stage. Continuous research into the production of a radiopaque material has been directed at including radiopaque glasses, salts or metals powders in an otherwise radiolucent polymer. However, the majority of new dentures are still made in radiolucent material which is notoriously difficult to locate by conventional radiography and reports continue to appear relating to the inhalation or ingestion of dentures (or fragments of them), occasionally leading to the death of the patient. Advances in radiographic techniques and equipment have seen the development of computed tomography (CT). This has proved invaluable as a diagnostic aid for disease and therapy but little attention appears to have been given to the use of this sophisticated technique in the detection of foreign bodies, in particular those of dental origin. This study investigates the use of CT in the detection of radiolucent denture base material. The results suggest that CT has substantial advantages over conventional radiography in the detection of this material and should be considered as a valuable diagnostic aid in those patients thought to have inhaled dentures or fragments of dentures.
随着丙烯酸树脂义齿基托材料引入牙科行业，射线可透性在早期就被视为一个重大缺陷。针对生产不透射线材料的持续研究一直致力于在原本射线可透的聚合物中加入不透射线的玻璃、盐或金属粉末。然而，大多数新义齿仍由射线可透材料制成，而这种材料通过传统放射照相术很难定位，并且不断有关于义齿（或其碎片）被吸入或摄入的报告出现，偶尔还会导致患者死亡。放射照相技术和设备的进步带来了计算机断层扫描（CT）的发展。这已被证明作为疾病诊断和治疗的辅助手段非常宝贵，但对于将这种先进技术用于检测异物，特别是牙科来源的异物，似乎很少有人关注。本研究调查了CT在检测射线可透义齿基托材料方面的应用。结果表明，在检测这种材料方面，CT比传统放射照相术具有显著优势，对于那些被认为吸入了义齿或义齿碎片的患者，应将CT视为一种有价值的诊断辅助手段。
