Objective To evaluate the clinical application of self-tooth grafting in repair of dentition defect.Methods Twenty-one cases were repaired by self-tooth that were pulled without function or impacted tooth onto the other place in dentition when the original teeth were missing,they were treated root canal completly. Results Twenty-one patients had been monitored for 3 years,sixteen patients of whom were prefect transplantations and stable. It demonstrated the high success rate of dental into plant and statistying restorated effect, four patients of 21 patients were satisfactory, only one of 21 patients was failure. Conclusion Self-tooth grafting is effective to the repair of dentition defect and oould be popularized.

Objective To evaluate the effect of basic aloe mastic on the healing process after tooth extraction in rats. Methods The models of tooth extraction wound were established by extracting the left and right maxillary first molares in 60 Wistar rats,and randomly divided into two groups. Right sides of teeth extraction socket were used as experimental groups,experimental group 1 was filled with 30% aloe mastic ,experimental group 2 was filled with 50% aloe mastic. Left sides of teeth extraction socket were used as control group. The histological observation was performed after tooth extraction at 2,4,6,8,11,and 15 days. Results There was a significant difference of the wound areas between experimental groups and control group at early stage (15 d) after tooth extraction (P