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Anatomical study of the location of the antilingula, lingula, and mandibular foramen for vertical ramus osteotomy

  • Park, Jin Hoo (Department of Oral and Maxillofacial Surgery, Yonsei University College of Dentistry) ;
  • Jung, Hwi-Dong (Department of Oral and Maxillofacial Surgery, Yonsei University College of Dentistry) ;
  • Kim, Hyung Jun (Department of Oral and Maxillofacial Surgery, Yonsei University College of Dentistry) ;
  • Jung, Young-Soo (Department of Oral and Maxillofacial Surgery, Yonsei University College of Dentistry)
  • Received : 2018.05.29
  • Accepted : 2018.06.18
  • Published : 2018.12.31

Abstract

Background: The purpose of this study was to identify the location of the antilingula, lingula, and mandibular foramen in Korean cadavers and to promote safe and accurate surgery without damage to the inferior alveolar neurovascular bundle (IANB) when performing a vertical ramus osteotomy (VRO). Methods: This study was conducted on the dried mandibles of 20 adult cadavers. Digital calipers were used to measure the distances from the anatomical reference points (antilingula, lingula, and mandibular foramen). Result: The antilingula was located at the anterior 44% and superior 31% in the ramus. The lingula was located at the anterior 55% and superior 30% in the ramus. The mandibular foramen was located at the anterior 58% and superior 46% in the ramus. Regarding the positional relationship with the antilingula, the lingula was located 0.54 mm superior and 4.19 mm posterior, and the mandibular foramen was located 6.95 mm inferior and 4.98 mm posterior. The results suggested that in order to prevent damage to the IANB, osteotomy should be performed in the posterior region of ramus at least 29% of the total horizontal length of the ramus. Conclusion: Using only the antilingula as a reference point is not guaranteed to IANB injury. However, it is still important as a helpful reference point for the surgeon in the surgical field.

Keywords

References

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  1. Examination of the Safe Zone in Mandibular Ramus Osteotomies vol.32, pp.6, 2021, https://doi.org/10.1097/scs.0000000000007352
  2. Antilingula as a Surgical Reference Point for Vertical Ramus Osteotomy vol.2021, pp.None, 2018, https://doi.org/10.1155/2021/5585297