Five years old more teeth if the film examination, the tooth germ is about to erupt belongs to the normal phenomenon, if for the accidental loss or permanent teeth have not yet erupted signs of tooth loss as an abnormal phenomenon. 1. Normal phenomenon: the general replacement period is about six years old, but according to the different physical development of individuals, there may be more than five years old around the replacement of teeth, general radiographic examination can be found below the embryo close to the gums, tooth loss parts of the gums are full of white, indicating that the teeth are about to erupt, the loss of milk teeth is a normal phenomenon. 2. Abnormal phenomenon: if the teeth by accidental impact or caries, apical periodontitis caused by tooth loss, for the abnormal phenomenon, X-ray examination of the tooth germ has not erupted signs. Whether it is normal to lose teeth at the age of five is specifically related to the individual’s physical condition and medical history, and it is recommended to go to the hospital to do oral and x-ray examination to confirm.