<P> A full mouth series is a complete set of intraoral X-rays taken of a patients' teeth and adjacent hard tissue . This is often abbreviated as either FMS or FMX (or CMRS, meaning Complete Mouth Radiographic Series). The full mouth series is composed of 18 films, taken the same day: </P> <Ul> <Li> four bitewings <Ul> <Li> two molar bitewings (left and right) </Li> <Li> two premolar bitewings (left and right) </Li> </Ul> </Li> <Li> eight posterior periapicals <Ul> <Li> two maxillary molar periapicals (left and right) </Li> <Li> two maxillary premolar periapicals (left and right) </Li> <Li> two mandibular molar periapicals (left and right) </Li> <Li> two mandibular premolar periapicals (left and right) </Li> </Ul> </Li> <Li> six anterior periapicals <Ul> <Li> two maxillary canine - lateral incisor periapicals (left and right) </Li> <Li> two mandibular canine - lateral incisor periapicals (left and right) </Li> <Li> two central incisor periapicals (maxillary and mandibular) </Li> </Ul> </Li> </Ul> <Li> four bitewings <Ul> <Li> two molar bitewings (left and right) </Li> <Li> two premolar bitewings (left and right) </Li> </Ul> </Li> <Ul> <Li> two molar bitewings (left and right) </Li> <Li> two premolar bitewings (left and right) </Li> </Ul>

What kind of radiation are dental x rays