University of Gazi, Faculty of Dentistry, Department of Pediatric Dentistry, Ankara, Turkey.
Dentomaxillofac Radiol. 2010 Feb;39(2):91-4. doi: 10.1259/dmfr/15182314.
The aim of this study was to compare the diagnostic quality of a new wireless handheld unit (ADX4000; Dexcowin Co. Ltd, Korea) on conventional bitewings and its LCD screen for the detection of approximal caries in primary teeth.
In total, 108 approximal surfaces of primary teeth were examined in vitro by 3 observers. Conventional films were viewed under subdued lighting conditions on a conventional view box. Digital 3.5 inch images were displayed on the built-in monitor of the ADX4000 and digital 17 inch images were viewed on a 17 inch monitor. The true caries diagnosis was based on histological assessment of the approximal surfaces after sectioning the primary teeth. Receiver operating characteristic (ROC) curve (A(z)) analysis was used to assess the diagnostic quality of imaging modalities.
The areas under the ROC curves ranged from 0.786 (digital 17 inch) to 0.813 (digital 3.5 inch). No statistically significant differences were found between the three modalities for detecting approximal caries.
It was concluded that the diagnostic quality of conventional film and digital images, which were exposed and viewed by a new wireless handheld unit, was comparable.
本研究旨在比较一种新型无线手持设备（ADX4000；Dexcowin Co. Ltd，韩国）在常规咬片和其液晶显示屏上对乳牙邻面龋的检测诊断质量。
共对 108 颗乳牙的邻面进行了体外检查，由 3 名观察者进行。常规片在常规观片箱的弱光条件下进行观察。ADX4000 的内置监视器上显示数字 3.5 英寸图像，17 英寸监视器上显示数字 17 英寸图像。真实的龋齿诊断基于对乳牙切片后近面的组织学评估。使用接收者操作特性（ROC）曲线（A（z））分析评估成像方式的诊断质量。
ROC 曲线下的面积范围从 0.786（数字 17 英寸）到 0.813（数字 3.5 英寸）。三种模式在检测邻面龋方面没有发现统计学上的显著差异。
可以得出结论，通过新型无线手持设备曝光和观察的常规片和数字图像的诊断质量相当。
