Freyche Sarah, Vazquez Lydia
Clinique universitaire de médecine dentaire, Faculté de médecine, Université de Genève, Suisse.
Département de réhabilitation oro-faciale, Unité de radiologie dentaire, Clinique universitaire de médecine dentaire, Faculté de médecine, Université de Genève, Suisse.
Swiss Dent J. 2023 Feb 6;133(2):89-96. doi: 10.61872/sdj-2023-02-02.
When taking intraoral X-rays with a round collimator, the salivary glands and the thyroid gland are exposed to ionizing radiation. The rectangular collimator reduces the patient's radiation dose. This study aims to analyze the impact of the rectangular collimator on the quality of intraoral X-rays taken by students of the University Clinics of Dental Medicine (Geneva, Switzerland). Intraoral X-rays, performed by 8 students with digital intraoral phosphor plates, were collected and a quality score was assigned to each X-ray. A total of 130 intraoral radiographs were analyzed. Half of the radiographs were taken with a rectangular collimator and 24.6% (32/130) were bitewings. The mean quality score of bitewings taken with or without a collimator was 11 ± 1.8 and 10.3 ± 0.9, respectively. The mean quality score of apical X-rays taken with or without collimator was 11.6 ± 1.0 and 11.5 ± 2.1, respectively. X-rays taken with a rectangular collimator were of excellent or sufficient diagnostic quality for 95% of the bitewings and 100% of the periapical radiographs. This quality control study showing that students perform quality intraoral X-rays with a rectangular collimator could encourage clinicians to use this device as ameans of radiation protection in their daily practice.
使用圆形准直器进行口腔内X线检查时，唾液腺和甲状腺会受到电离辐射。矩形准直器可降低患者的辐射剂量。本研究旨在分析矩形准直器对瑞士日内瓦大学牙科学院学生所拍摄口腔内X线片质量的影响。收集了8名学生使用数字化口腔内磷光板进行的口腔内X线检查图像，并为每张X线片评定质量分数。共分析了130张口腔内X线片。其中一半的X线片是使用矩形准直器拍摄的，24.6%（32/130）为咬合翼片。使用或未使用准直器拍摄的咬合翼片的平均质量分数分别为11±1.8和10.3±0.9。使用或未使用准直器拍摄的根尖X线片的平均质量分数分别为11.6±1.0和11.5±2.1。对于95%的咬合翼片和100%的根尖X线片，使用矩形准直器拍摄的X线片具有优秀或足够的诊断质量。这项质量控制研究表明，学生使用矩形准直器能够拍摄出高质量的口腔内X线片，这可能会鼓励临床医生在日常实践中使用该设备作为一种辐射防护手段。
