A dental x-ray image media holder (10) includes an image media backing plate (11) adjustably affixed to a bite block (12). The backing plate (11) has at least one channel (31-33) for receiving a post (21) affixed to the bite block (12), such that the bite block (12) can be selectively moved within the channel (31-33) to orient the bite block (12) in a predetermined position relative to the backing plate (11).