[Histologic comparison of treating root surfaces with different acids].

OBJECTIVE

To study the healing mechanism of different etching agents for periodontitis-affected teeth in animal models.

METHODS

The animal models of defect alveolar bone were prepared, and the isolated teeth with periodontitis were scaled according to periodontal surgery in vitro. After different acid acid-treatment, the dentin blocks were implanted into defect bones, then the results were examined histologically after 3, 7, 14, 28 days respectively.

RESULTS

There was less inflammatory reaction in tetracycline group after operation. At the later stages, the healing in tetracycline group was characterized by osseointegration without resorption. But hydrochloric acid group and citric acid group showed different reactions.

CONCLUSION

Periodontal tissue repair differs with the use of different acids.