We investigated clinical and radiographic findings after Marsupialization for eruption of impacted tooth in dentigerous cyst of the lower premolar region in 17 children. The results were as follows.
1. Eruption of the impacted tooth was confirmed in all cases.
2. The impacted teeth which had a tilt over 60 degrees erupted with twist postoperatively.
3. After marsupialization, the impacted tooth erupted faster than the normal tooth on the opposite side.
Marsupialization of cyst is very useful for eruption of impacted teeth in children.
Retaining the space for tooth eruption is necessary in patients whose impacted tooth locates deeply in the mandible, or occlusion is unstable.
It is necessary to correct the impacted tooth wis much tilt in the mandible by orthodontic treatment after marsupialization.
