Direct wired sensors are much thicker than film, and often cause pain as the sensor is pushed deep into the corners of the mouth - it might not even be able to image a critical area. The one above is OVER 12 TIMES thicker than a standard packet of film!
Digital systems and sensors are enormously expensive. Costs that are inevitably passed on to the patient.
Did you know that a full series of intra-oral X-Rays using D speed film is equivalent to just a few hours in the sun?
In dentistry, detail smaller than what the human eye can see matters! Digital Sensors simply don't measure up!