上颌窦附近第一磨牙牙根周围骨质：锥形束计算机断层扫描分析与大体解剖学测量在小骨量测量中的比较
First molar radicular bone near the maxillary sinus: a comparison of CBCT analysis and gross anatomic dissection for small bony measurement.
作者信息
Howe Robert B
机构信息
Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, California, USA.
出版信息
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2009 Aug;108(2):264-9. doi: 10.1016/j.tripleo.2008.12.021. Epub 2009 Feb 8.
OBJECTIVES
This study assessed agreement of cone-beam computerized tomography (CBCT) measurements against those obtained by gross dissection and physical calipers for dimensions of maxillary bone around first molar roots in cadaveric specimens.
STUDY DESIGN
A total of 37 human maxilla pairs with 69 first molars were analyzed by CBCT with a resolution of 200 microm and the results compared with gross dissection. Matched data sets of 414 data points (6 data points per tooth) were compared using Bland-Altman statistics. An operational definition of clinical accuracy was proposed.
RESULTS
The data sets displayed a Pearson correlation coefficient of r = 0.85. Analysis revealed a positive bias for CBCT of 0.4 mm with a standard deviation of 1.1 mm relative to gross dissection. Less bone around first molar roots was demonstrated than reported in available literature.
CONCLUSIONS
High-resolution CBCT measurements were acceptable for clinical accuracy and study of the maxillary sinus.
目的
本研究评估了锥形束计算机断层扫描（CBCT）测量结果与大体解剖及物理卡尺测量结果在尸体标本中第一磨牙牙根周围上颌骨尺寸方面的一致性。
研究设计
对37对人上颌骨及69颗第一磨牙进行了分辨率为200微米的CBCT分析，并将结果与大体解剖结果进行比较。使用Bland-Altman统计方法比较了414个数据点（每颗牙齿6个数据点）的匹配数据集。提出了临床准确性的操作定义。
结果
数据集显示Pearson相关系数r = 0.85。分析表明，相对于大体解剖，CBCT存在0.4毫米的正偏差，标准差为1.1毫米。第一磨牙牙根周围的骨质比现有文献报道的要少。
结论
高分辨率CBCT测量对于上颌窦的临床准确性和研究是可以接受的。
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