Lam E W, Ruprecht A, Yang J
Department of Oral Pathology, College of Dentistry, University of Iowa, Iowa City, USA.
J Prosthet Dent. 1995 Jul;74(1):42-6. doi: 10.1016/s0022-3913(05)80227-6.
The widespread use of dental implants in partially and completely edentulous patients has brought about a need to preoperatively depict and quantify accurate bone height and contour. A number of conventional intraoral and extraoral radiographic techniques have been used, including the relatively new modality of two-dimensional orthoradially reformatted computed tomography. Despite rapid advances in imaging technology, many clinicians continue to rely on techniques such as panoramic radiography that produce images that distort the jaws nonuniformly. This study compared bone height measurements of jaws made with these two imaging modalities. Nineteen sites in 10 patients were imaged with both techniques and mean bone height was determined for each imaging technique and site. Significant differences were found between mean bone heights measured with the two imaging modalities (p < 0.0005). Situations in which the use of dental implants would be particularly advantageous demonstrated the largest discrepancies, that is, when bone height measurements were less than 15 mm.
牙种植体在部分和完全无牙患者中的广泛应用，使得术前精确描绘和量化骨高度及轮廓成为必要。人们已经使用了多种传统的口内和口外放射成像技术，包括相对较新的二维正位重建计算机断层扫描技术。尽管成像技术迅速发展，但许多临床医生仍继续依赖全景放射成像等技术，这些技术所产生的图像会使颌骨产生不均匀的变形。本研究比较了用这两种成像方式测量的颌骨骨高度。对10名患者的19个部位用这两种技术进行成像，并确定每种成像技术和每个部位的平均骨高度。发现用这两种成像方式测量的平均骨高度之间存在显著差异（p < 0.0005）。牙种植体使用特别有利的情况显示出最大的差异，即当骨高度测量值小于15毫米时。
