Abstract
This case report describes a 46 month-old boy with a complete impaction of the left second primary mandibular molar. We applied marsupialization and traction treatment and conducted a followup for 9 years and 4 months. The following clinical results were obtained:
1) After the observation period of six months from the initial visit, marsupialization and traction treatment were applied. In this period, it was suspected that based on radiographic examination the tooth germ of the left mandibular premolar was congenitally missing.
2) Two years and 9 months after marsupialization, radiographs showed the tooth germ of the left mandibular second premolar.
3) Nine years and 4 months after marsupialization and traction treatment, the occlusal balance of the left mandibular second premolar was attained.
Because impacted primary teeth may affect the development and eruption of the permanent successors, long-term observation is therefore necessary until the permanent successors erupt.
