Abstract
Previously, the replantation of dislocated primary teeth had never been tried, because of adverse effect for permanent teeth germ. However, once young children lose their primary teeth, they could get dysarthria, masticatory and cosmetic disturbance, or oral habits. In the present study, we reported two cases of replantation of mandibular primary incisors, and observation until these teeth had changed to succedaneous teeth ; case 1 is a 3-year-old boy with 3 dislocated mandibular incisors, and case 2 is a 2-year-old girl with a dislocated mandibular incisor.All replanted primary incisors in the both case had a relatively good prognosis without any pain,discoloration, redness and swelling of gingiva. Eventually, they indicated normal root resorption, and changed to permanent teeth regularly. Further, none of them needed root canal treatment.Concerning the effect of replantation of dislocated primary teeth on succeedeous permanent teeth,although the white spots of labial incisal edge of the enamel surface in mandibular central incisors were seen in only case 1, other abnormalities like textured enamel surface, enamel cavity and abnormal eruption time were not observed. This result indicates that replantation of dislocated primary teeth does not have an effect on succeedeous permanent teeth, and dentists should consider this treatment procedure, especially in young patients, after sufficient informed consent.
