Objectives/Aims:

Apart from the visual detection of caries, X-rays can be taken for detection of approximal lesions. The Proxi head of VistaCam iX intraoral camera system uses near-infrared light (NIR) to enable caries detection in approximal surfaces. The aim of this study was to evaluate the performance of the NIR for the detection of approximal enamel lesions by comparison with radiographic findings.

Materials and methods:

One hundred ninety-three approximal surfaces from 18 patients were examined visually and using digital radiographs for presence or absence of enamel lesions. Then digital images of each surface were produced using the near-infrared light. Correlation between methods was assessed using Spearman’s rank correlation coefficient (r_s). Agreement between radiographic and NIR findings was calculated using the kappa coefficient. McNemar’s test was used to analyse differences between the radiographic and NIR findings (α=0.05).

Results:

Moderate correlation was found between all detection methods (r_s=0.33–0.50, P<0.0001). Agreement between the radiographic and NIR findings was moderate (κ=0.50, 95% CI=0.37–0.62) for the distinction between sound surfaces and enamel caries. No significant differences were found between the findings (P=0.07).

Conclusion:

Radiographs and NIR were found to be comparable for the detection of enamel lesions in permanent teeth.

中文翻译：

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用于检测近釉质病变的近红外成像系统 VistaCam iX Proxi 的临床性能

目标/目标：

除了目视检测龋齿外，还可以通过 X 光检查来检测邻近病变。VistaCam iX 口腔内窥镜系统的 Proxi 头使用近红外光 (NIR) 来检测邻近表面的龋齿。本研究的目的是通过与放射线检查结果进行比较，评估 NIR 在检测近牙釉质病变方面的性能。

材料和方法：

对 18 名患者的 193 个邻近表面进行了目视检查并使用数字射线照片检查是否存在牙釉质病变。然后使用近红外光生成每个表面的数字图像。使用 Spearman 等级相关系数 ( r _s )评估方法之间的相关性。使用 kappa 系数计算放射线照相和 NIR 结果之间的一致性。McNemar 检验用于分析射线照相和 NIR 结果之间的差异 ( α =0.05)。

结果：

所有检测方法之间均存在中等相关性（r _s =0.33–0.50，P <0.0001）。对于声音表面和牙釉质龋齿之间的区别，放射线照相和 NIR 结果之间的一致性中等（κ = 0.50，95% CI = 0.37-0.62）。结果之间没有发现显着差异（P =0.07）。

结论：

放射线照片和近红外光谱在检测恒牙牙釉质病变方面具有可比性。