Journal of Korean Dental Science

Korean Academy of Dental Science (대한치의학회)
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Tooth Movement in Demineralized Area by Etchant in Rabbits

  • Choi, Bohm (Department of Oral and Maxillofacial Prosthodontics, Yeouido St. Mary's Hospital) ;
  • Kim, Tae-Gun (Graduate School of Dental Science, The Catholic University of Korea) ;
  • Han, Seung-Hee (Graduate School of Dental Science, The Catholic University of Korea) ;
  • Park, Yoon-Hee (Department of Oral and Maxillofacial Surgery, Uijeongbu St. Mary's Hospital) ;
  • Lee, Won (Graduate School of Dental Science, The Catholic University of Korea)
  • Received : 2012.05.16
  • Accepted : 2012.06.06
  • Published : 2012.06.30
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Abstract

Purpose: Among the facilitation of tooth movement in adult orthodontic treatment methods, surgical approaches are gaining popularity but complications following mechanical bone reduction are a problem. In this study, tooth movement was observed after alveolar bone was chemically demineralized to verify whether tooth movement had been facilitated. Materials and Methods: Twelve rabbits were used. In the experimental group, the alveolar bone of the left first molar area was exposed and demineralized. Thirty seven percents phosphoric acid was applied for 5 minutes for demineralization. The opposite first molar area was used as control. Two teeth were pulled with 200 g force and 4 rabbits each were sacrificed at 3, 7, and 14 days after the force was applied. Histologic examination was done with hematoxylin and eosin and tartrate-resistant acid phosphatase staining. Result: The histologic examination results revealed more bone resorption in the demineralized area. As time passed, the number of osteoclasts increased in the compressed area. The amount of tooth movement was larger in the experimental group compared to the control group but the difference was not statistically significant. Conclusion: The demineralization with etchant resulted in limited bone resorption, more tooth movement and less damage of the cementum after applied orthodontic force.

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References

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