This study was aimed at the estimation of the effective doses and radiation risks from dental X-ray examinations based on the data collection in St. Petersburg and the Leningrad Region. The range of mean values of effective doses for intraoral examinations on the X-ray units with film detectors was from 3.5 to 8.2 μSv and for the units with digital detectors—from 1.2 to 2.5 μSv. The mean effective doses for panoramic examinations were 22.9 μSv and for cone-beam computed tomography (CBCT)—530.6 μSv, respectively. The highest detriment-adjusted lifetime risk values were estimated for the 20–24-year-old age group: 40.8 × 10−6 in females and 32.7 × 10−6 in males for CBCT. Effective doses in St. Petersburg and Leningrad region were comparable or higher compared with the published data.

中文翻译：

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常见牙科 X 光片、全景和 CBCT 检查的有效剂量和辐射风险

本研究旨在根据圣彼得堡和列宁格勒地区的数据收集，估计牙科 X 射线检查的有效剂量和辐射风险。带胶片探测器的 X 射线设备的口腔内检查有效剂量平均值范围为 3.5 至 8.2 μSv，而带数字探测器的设备的有效剂量平均值范围为 1.2 至 2.5 μSv。全景检查的平均有效剂量分别为 22.9 μSv 和锥形束计算机断层扫描 (CBCT) — 530.6 μSv。估计 20-24 岁年龄组的最高损害调整终生风险值：CBCT 中女性为 40.8 × 10-6，男性为 32.7 × 10-6。与公布的数据相比，圣彼得堡和列宁格勒地区的有效剂量相当或更高。