[Significance of radiation exposure in dental radiography]

Radiation exposure must be evaluated in relation to quality improvement. Film contrast can be improved by limiting the exposed area to the film format; a beneficial side effect is the decrease in scatter radiation. Since a monthly evaluation of the x-ray equipment is now mandatory, the incidences of excessive skin exposure can be evaluated and eliminated. The newly developed technology of electronic radiologic diagnosis without film on a monitor promises a further reduction of radiation dose in the future.