Intraoral sensor and method for producing intraoral sensor

An intraoral sensor comprising:

• an image sensor including a light detection region;
• a fiber optical plate is disposed on the image sensor to cover the light detection region;
• a scintillator is disposed on the fiber optical plate;
• and
• a case containing the image sensor, the fiber optical plate, and the scintillator,
• wherein the fiber optical plate includes,
• a first main surface opposing the image sensor and having a polygonal shape,
• a second main surface opposing the scintillator and having a polygonal shape, and
• a plurality of lateral surfaces connecting an edge of the first main surface and an edge of the second main surface, wherein
• the edge of the second main surface includes a plurality of corner portions, and a plurality of side portions connecting the corner portions adjacent to each other, and
• the scintillator is provided on the second main surface and the plurality of lateral surfaces in such a manner that the corner portions and the ridge portions constituted by the lateral surfaces adjacent to each other are exposed.