Maxillofacial Plastic and Reconstructive Surgery

  • Volume 41
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  • Pages.8.1-8.6
  • /
  • 2019
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  • 2288-8101(pISSN)
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  • 2288-8586(eISSN)
Korean Association of Maxillofacial Plastic and Reconstructive Surgeons (대한악안면성형재건외과학회)
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Comparative study on long-term stability in mandibular sagittal split ramus osteotomy: hydroxyapatite/poly-ʟ-lactide mesh versus titanium miniplate

  • Park, Young-Wook (Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University) ;
  • Kang, Hyun-Sik (Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University) ;
  • Lee, Jang-Ha (Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University)
  • Received : 2018.11.23
  • Accepted : 2019.02.04
  • Published : 2019.12.31
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Abstract

Background: Resorbable devices have recently been adopted in the field of orthognathic surgery with controversies about their postoperative skeletal stability. Hence, we determined the long-term skeletal stability of unsintered hydroxyapatite/poly-ʟ-lactic acid (HA/PLLA) mesh for osteofixation of mandibular sagittal split ramus osteotomy (SSRO), and compared it with that of titanium miniplate. Methods: Patients were divided into resorbable mesh and titanium miniplate fixation groups. A comparative study of the change in the mandibular position was performed with preoperative, 1-day, 6-month, and 2-year postoperative lateral cephalograms. Results: At postoperative 6 months-compared with postoperative 1 day, point B (supra-mentale) was significantly displaced anteriorly in the titanium-fixation group. Moreover, at postoperative 2 years-compared with postoperative 6 months, point B was significantly displaced inferiorly in the titanium-fixation. However, the HA/PLLA mesh-fixation group did not show any significant change with respect to point B postoperatively. Conclusions: The HA/PLLA mesh-fixation group demonstrated superior long-term skeletal stability with respect to the position of mandible, when compared with the titanium-fixation group.

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References

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