Zhang Wenjian, Rajani Shazia, Wang Bing-Yan
Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, 7500 Cambridge Street, Suite 5366, Houston, TX, 77054, USA.
Dental Hygiene Program, School of Dentistry, University of Texas Health Science Center at Houston, 7500 Cambridge Street, Suite 5366, Houston, TX, 77054, USA.
Oral Radiol. 2018 Sep;34(3):208-218. doi: 10.1007/s11282-017-0298-4. Epub 2017 Aug 1.
Cone-beam computed tomography (CBCT) has been widely used in many fields of dentistry. However, little is known about the accuracy of CBCT for evaluation of periodontal status. The objective of this study was to compare and correlate periodontal assessments among CBCT, clinical attachment loss (CAL) measurement, and periapical (PA)/bitewing (BW) radiography.
Eighty patients (28 males, 52 females; age range, 19-84 years) from the University of Texas School of Dentistry at Houston were evaluated retrospectively. Measurements were taken on the central incisors, canines, and first molars of the right maxilla and left mandible. CAL was extracted from periodontal charts. The radiographic distance from the cementum-enamel junction (CEJ) to the alveolar crest was measured for tooth mesial and distal sites on PA/BW and CBCT images using MiPacs software and Anatomage Invivo software, respectively. One-way ANOVA and Pearson analysis were performed for statistical analyses.
The CEJ-crest distances for CBCT, PA/BW, and CAL were 2.56 ± 0.12, 2.04 ± 0.12, and 2.08 ± 0.17 mm (mean ± SD), respectively. CBCT exhibited larger values than the other two methods (p < 0.05). There were highly significant positive correlations among CBCT, PA/BW, and CAL measurements at all examined sites (p < 0.001). The Pearson correlation coefficient was higher for CBCT with CAL relative to PA/BW with CAL, but the difference was not significant (r = 0.64 and r = 0.55, respectively, p > 0.05).
This study validates the suitability of CBCT for periodontal assessment. Further studies are necessary to optimize the measurement methodology with CBCT.
锥形束计算机断层扫描（CBCT）已在牙科的许多领域广泛应用。然而，关于CBCT评估牙周状况的准确性知之甚少。本研究的目的是比较CBCT、临床附着丧失（CAL）测量和根尖片（PA）/咬合翼片（BW）X线摄影之间的牙周评估，并进行相关性分析。
对来自休斯顿德克萨斯大学牙科学院的80例患者（28例男性，52例女性；年龄范围19 - 84岁）进行回顾性评估。测量右侧上颌和左侧下颌的中切牙、尖牙和第一磨牙。CAL数据取自牙周检查表。分别使用MiPacs软件和Anatomage Invivo软件在PA/BW和CBCT图像上测量牙齿近中和远中位点从牙骨质 - 釉质界（CEJ）到牙槽嵴的影像学距离。进行单因素方差分析和Pearson分析以进行统计学分析。
CBCT、PA/BW和CAL的CEJ - 牙槽嵴距离分别为2.56 ± 0.12、2.04 ± 0.12和2.08 ± 0.17 mm（平均值±标准差）。CBCT显示的值大于其他两种方法（p < 0.05）。在所有检查位点，CBCT、PA/BW和CAL测量之间存在高度显著的正相关性（p < 0.001）。CBCT与CAL之间的Pearson相关系数高于PA/BW与CAL之间的相关系数，但差异不显著（分别为r = 0.64和r = 0.55，p > 0.05）。
本研究验证了CBCT用于牙周评估的适用性。有必要进一步研究以优化CBCT的测量方法。
