Film placement in veterinary dentistry is challenging due to the inability to visualize the roots. Correct placement of the film will minimize retakes.
TECHNIQUE1-5 When utilizing standard film, there is an embossed dot (or dimple) on the corner of the film (61). The side of the film with the palpable dot should be placed towards the X-ray beam, and this side of the film is white for most film types. The opposite or ‘back’ side of the film will usually be colored. Place the film in the mouth so that the entire tooth (including the root) will be imaged (if possible). The roots of all teeth are much longer than the crown in veterinary patients. This is especially true of canine teeth which have roots that are at least twice as long as the visible crown. Always err on the side of having the film further into the mouth to ensure imaging the entire root structure. The film should be placed as close as possible to the object (generally touching the tooth and gingiva) to minimize distortion (62). Finally, ensure that the embossed dot is not over the area of interest.