Colosi Dan, Potluri Anitha, Islam Saiful, Geha Hassem, Lurie Alan
Department of Oral Diagnosis, University of Connecticut School of Dental Medicine, Farmington 06030-1605, USA.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2003 Dec;96(6):772-3. doi: 10.1016/j.tripleo.2003.08.014.
It is traditionally believed that the radiographic image of bone striae is a reflection of the trabecular pattern of cancellous bone. Results of a 1999 paper by Cavalcanti et al. contradicted this paradigm, suggesting that the intraoral radiographic image of trabecular pattern in the mandible reflects the morphology of the endosteal surface of the cortical bone, rather than that of cancellous bone. Here, we conduct a simple experiment to assess the contribution of dry mandibular cancellous bone to the image of trabecular pattern seen on intraoral films. Standardized periapical-type radiographs centered on the same region of interest of a dry human mandible were acquired before and after removal of the buccal, then of both cortical plates, together with the endosteal cortical-trabecular bone interface. One oral and maxillofacial radiologist and 4 oral and maxillofacial radiology residents blindly assessed the presence or absence of bone striations on the acquired images. We find that bone striations are visible on periapical-type images of dry human mandibles in the absence of one or both cortical plates, and that their pattern is similar to that seen in the image of the intact specimen. We conclude that cancellous bone contributes significantly to the image of trabecular bone in dry human mandibles.
传统上认为，骨纹的放射影像反映的是松质骨的小梁模式。卡瓦尔坎蒂等人1999年发表的一篇论文的结果与这一范式相矛盾，该论文表明下颌骨小梁模式的口内放射影像反映的是皮质骨骨内膜表面的形态，而非松质骨的形态。在此，我们进行了一项简单实验，以评估干燥的下颌松质骨对口内片上所见小梁模式影像的贡献。在去除颊侧皮质板，然后去除两侧皮质板以及骨内膜皮质 - 小梁骨界面之前和之后，获取以干燥人类下颌骨同一感兴趣区域为中心的标准化根尖片。一名口腔颌面放射科医生和4名口腔颌面放射科住院医师对所获取影像上是否存在骨纹进行了盲法评估。我们发现，在没有一侧或两侧皮质板的情况下，干燥人类下颌骨的根尖片上可见骨纹，且其模式与完整标本影像中所见相似。我们得出结论，松质骨对干燥人类下颌骨中小梁骨的影像有显著贡献。
