Tsuchida Ryoko, Araki Kazuyuki, Okano Tomohiro
Department of Radiology, Showa University School of Medicine, Tokyo, Japan.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007 Sep;104(3):412-6. doi: 10.1016/j.tripleo.2007.02.028. Epub 2007 Jul 6.
To assess the accuracy of a limited cone-beam volumetric imaging system in detecting incipient proximal caries.
Fifty extracted premolars were used. On 100 surfaces examined, 71 proximal carious lesions were found; 47 were limited to the enamel, and 24 penetrated into the dentin. A limited cone-beam volumetric imaging system (CBVI), 3D Accuitomo (J. Morita Mfg. Corp., Kyoto, Japan), was used. Insight films (Eastman Kodak, Rochester, NY) were used for comparison. Seven experienced oral radiologists determined the presence of lesions using a continuous rating scale. The area measure (Az) values were calculated from the receiver operating characteristic curve obtained for each modality and observer.
The mean Az-values were 0.63 +/- 0.02 for 3D Accuitomo and 0.63 +/- 0.03 for film. Analysis of variance showed no statistically significant difference between 3D Accuitomo and film.
A limited CBVI, 3D Accuitomo, could not enhance the accuracy in detecting proximal carious lesions.
评估一种有限锥形束容积成像系统检测早期邻面龋的准确性。
使用了50颗拔除的前磨牙。在检查的100个牙面上，发现71个邻面龋损；47个局限于釉质，24个已侵入牙本质。使用了一种有限锥形束容积成像系统（CBVI），即3D Accuitomo（日本京都森田制造公司）。使用Insight胶片（纽约罗切斯特伊士曼柯达公司）进行对比。7名经验丰富的口腔放射科医生使用连续评分量表确定龋损的存在情况。根据每种成像方式和观察者获得的受试者操作特征曲线计算面积测量值（Az）。
3D Accuitomo的平均Az值为0.63±0.02，胶片的平均Az值为0.63±0.03。方差分析显示3D Accuitomo和胶片之间无统计学显著差异。
有限的CBVI（3D Accuitomo）不能提高检测邻面龋损的准确性。
