Abstract
Primary tooth impaction is quite rare during the development of primary dentition. Various factors contribute to the impaction of primary tooth, including malposition and malformation of the tooth bud, tumor and cyst. The purpose of this paper is the report of a case of horizontal impaction of mandibular primary central incisors with eruption in proper position. The case was a 1 year 8-months-old female with horizontal impaction of mandibular primary central incisors. In the X-ray examination,root bent was not clear. The patient didn't have any oral habits, such as teething ring or finger sucking. Treatment planning is a follow-up while comparing the position of impacted incisors in gingiva and alveolar bone with photograph. The ridge of lingual gingiva corresponded with the edge of impacted incisors moved to labial direction at the age 2 years 5 months. Left primary central incisor erupted in the proper direction at age 2 years 8 months. Right primary central incisor was also erupted in the proper direction at age 3 years 2 months. The tooth axis of both incisors was changed to a completely normal direction at age 3 year 8 months. Normal growth of the successive permanent central incisors was seen in X-ray image at age 4 years 7 months. In conclusion, it is suggested that the long term precisely follow-up of impacted mandibular primary central incisors at age of around 2 years leads the prospective prognosis.
