Dental X-ray film Specifiction: 30x40mm, (adult film)22x35mm, (child film)57x76( ... )22x35mm, (child film)57x76(occlusion) This film is esed take X-ray picture for teeth. The smooth side to the ... X-ray when shooting. The lip-chrrk side is markly by ... )light in dark room. Exp: Two years. Condition of shooting X-ray (for reference only). Exposure time in seconds