A system (100,200) for intraoral x-ray image generation and x-ray collimation, including an x-ray detector (102,202), an x-ray subsystem (116, 216) which has an x-ray source (104,204) configured to generate an x-ray beam, and a collimation device which is connected to the x-ray source (104,204) and arranged to receive the x-ray beam generated by the x-ray source (104,204), wherein the collimation device is divided into three sections being a collimator housing assembly a collimator mount assembly, and a collimator chassis, wherein the collimator housing assembly includes a collimator housing, wherein the collimator mount assembly includes a collimator cover and a collimator plate, wherein a rectangular aperture is constructed in the collimator plate to at least partially block the passage of x-rays (110,210), characterized in that the collimator housing includes a plurality of collimator mount positioning slots (606A,606B), the collimator mount assembly is moveable within the slots (606A,606B) to different positions in the longitudinal direction of the collimation device 500, and the collimator plate is movable with the collimator mount assembly to a first position corresponding to a first x-ray detector (102,202) size, and a second position corresponding to a second x-ray detector (102,202) size, wherein the first x-ray detector (102,202) size corresponds to a Size-0 intraoral sensor, the second x-ray detector (102,202) size corresponds to a Size-1 intraoral sensor wherein the size of the rectangular aperture in the collimator plate is related to the different positions of the collimator mount assembly and the anticipated distances between the x-ray source (104,204) and the x-ray detector (102,202) respectively, and may be calculated based on such information. wherein the collimation device is divided into three sections being a collimator housing assembly a collimator mount assembly, and a collimator chassis, wherein the collimator housing assembly includes a collimator housing, wherein the collimator mount assembly includes a collimator cover and a collimator plate, wherein a rectangular aperture is constructed in the collimator plate to at least partially block the passage of x-rays (110,210), characterized in that the collimator housing includes a plurality of collimator mount positioning slots (606A,606B), the collimator mount assembly is moveable within the slots (606A,606B) to different positions in the longitudinal direction of the collimation device 500, and the collimator plate is movable with the collimator mount assembly to a first position corresponding to a first x-ray detector (102,202) size, and a second position corresponding to a second x-ray detector (102,202) size, wherein the first x-ray detector (102,202) size corresponds to a Size-0 intraoral sensor, the second x-ray detector (102,202) size corresponds to a Size-1 intraoral sensor wherein the size of the rectangular aperture in the collimator plate is related to the different positions of the collimator mount assembly and the anticipated distances between the x-ray source (104,204) and the x-ray detector (102,202) respectively, and may be calculated based on such information.