An intraoral sensor includes a scintillator including a first surface and a second surface, a fiber optical plate disposed on the second surface side of the scintillator, an image sensor disposed on an opposite side of the fiber optical plate from the scintillator, and a wiring board disposed on an opposite side of the image sensor from the fiber optical plate. An outline of the scintillator, an outline of the fiber optical plate, an outline of the image sensor, and an outline of the wiring board as viewed from a direction perpendicular to the first surface of the scintillator are substantially aligned.
