Maxillofacial Plastic and Reconstructive Surgery

  • Volume 38
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  • Pages.25.1-25.4
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  • 2016
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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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Recovery of inferior alveolar nerve injury after bilateral sagittal split ramus osteotomy (BSSRO): a retrospective study

  • Lee, Chi-Heun (Department of Oral and Maxillofacial Surgery, Graduate School, Kyung Hee University) ;
  • Lee, Baek-Soo (Department of Oral and Maxillofacial Surgery, Graduate School, Kyung Hee University) ;
  • Choi, Byung-Joon (Department of Oral and Maxillofacial Surgery, Graduate School, Kyung Hee University) ;
  • Lee, Jung-Woo (Department of Oral and Maxillofacial Surgery, Graduate School, Kyung Hee University) ;
  • Ohe, Joo-Young (Department of Oral and Maxillofacial Surgery, Graduate School, Kyung Hee University) ;
  • Yoo, Hee-Young (Department of Oral and Maxillofacial Surgery, Graduate School, Kyung Hee University) ;
  • Kwon, Yong-Dae (Department of Oral and Maxillofacial Surgery, Graduate School, Kyung Hee University) ;
  • Kwon, Yong-Dae (Department of Oral and Maxillofacial Surgery, Graduate School, Kyung Hee University)
  • Received : 2016.03.07
  • Accepted : 2016.04.22
  • Published : 2016.12.31
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Abstract

Background: Bilateral sagittal split ramus osteotomy (BSSRO) is the most widely used mandibular surgical technique in orthognathic surgery and is easy to relocate the distal segments, accelerating bone repair by the large surface of bone contact. However, it can cause neurosensory dysfunction (NSD) or sensory loss by injury of the inferior alveolar nerve. The purpose of the present study was to evaluate NSD after BSSRO and modifiers at NSD recovery. Methods: In this study, NSD characteristics after BSSRO from 2009 to 2014 at the Kyung Hee University Dental Hospital were evaluated. The pattern of sensory recovery over time was also evaluated based on factors such as field of sensory dysfunction, surgical procedure, presence of pre-operative facial asymmetry, and postoperative medications. Results: Most of the patients had shown NSD immediately after orthognathic surgery. Among the 1192 sides of 596 patients, NSD was observed in 953 sides and 544 patients. Sexual predilection was shown in males (p value = 0.0062). In the asymmetric group of 132 patients, NSD was observed in 128 patients (96.97 %). In the symmetric group of 464 patients, NSD was observed in 416 patients (89.45 %); on the other hand, NSD was observed significantly higher in the asymmetric group (p = 0.025). NSD-associated factors were analyzed, and vitamin B12 may be beneficial for NSD recovery. Conclusions: There was a difference between the symmetric group and the asymmetric group in NSD recovery. Vitamin B12 can be regarded as an effective method to nerve recovery. However, a further prospective study is needed.

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References

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