Fabrication of two different probe architectures for ultra-compact image sensors for root canal observations.
Fabrication of two different probe architectures for ultra-compact image sensors for root canal observations.
复制标题
为用于根管观察的超紧凑图像传感器制造两种不同的探头架构。
DOI：
10.1109/jsen.2016.2562118
复制
发表时间：
2016
影响因子：
4.3
通讯作者：
Kitamura C
中科院分区：
文献类型：
--
作者：
Fujimoto M;Yoshii S;Ikezawa S;Ueda T;Kitamura C
随着牙科显微镜、锥形束CT等牙科仪器的发展，现代牙科诊疗的精度有了很大的提高。然而，使用这些仪器观察深牙周袋、根尖附近的骨折和根管的侧支是困难的。为了解决这些问题，我们开发了两种类型的显微图像传感器，可用于根管的观察。第一图像传感器是使用外部光源的外部照射探头。该探头具有高分辨率和宽视场。另一个传感器是内部照射探头，其可以用于观察图像并通过单个探头传输照明光。外照射探头具有直径为600 μm的传像光纤和梯度折射率（GRIN）透镜。内部照射探头具有直径为300 μm的图像光纤、GRIN透镜和40根直径均为40 μm的光纤作为光源。使用这些探针，我们捕获了分辨率图表的图像;使用两种类型的探针观察到宽度为10-100 μm的线空间。捕获图像的可见性评价显示出比市售内窥镜更高的测量值。我们将把这种超紧凑型图像传感器应用于牙科以外的各种领域，如医疗和工业应用。
With the development of dental instruments, such as dental microscopes and cone beam computed tomography, the precision of current dental diagnosis and treatment has greatly improved. However, the observation of deep periodontal pockets, fractures near the root apex, and collaterals of root canals is difficult using these instruments. To solve these problems, we developed two types of micro-image sensors that can be used for the observation of root canals. The first image sensor is an external-irradiation probe that uses an external light source. This probe has high resolution and a wide field of view. The other sensor is an internal-irradiation probe, which can be used to observe an image and transmit the illumination light with a single probe. The external-irradiation probe has an image fiber with a diameter of 600 μm and a gradient index (GRIN) lens. The internal-irradiation probe has an image fiber with a diameter of 300 μm, a GRIN lens, and 40 optical fibers with a diameter of 40 μm each as a light source. Using these probes, we captured the image of a resolution chart; line spaces with the widths of 10-100 μm were observed using both types of probes. The evaluations of the visibility of the captured image showed higher measurement values than those of commercially available endoscopes. We will apply this ultra-compact image sensor to various fields besides dentistry, such as medical and industrial applications.