NDLI: Does osteotomizing the lower border of the mandible affect the lingual split pattern in a sagittal split ramus osteotomy?

Content Provider	Springer Nature : BioMed Central
Author	Al-Dawoody, Alah Dawood Hamad, Shehab Ahmed Kheder Khrwatany, Khurshid A. Saleem, Twana Hoshyar
Abstract	Aim The purpose of this study was to evaluate the effect of adding a fourth osteotomy at the lower border of the mandible on the lingual cortical fracture pattern in bilateral sagittal split ramus osteotomies. Patients and methods The sample of the study consisted of 20 patients (12 male and 8 female, with a mean age of 26.79 ± 7.12 years) with mandibular deformities who needed bilateral sagittal split ramus osteotomy. One side underwent a traditional sagittal split ramus osteotomy, and the procedure was modified on the other side by adding a 1 cm horizontal osteotomy at the lower border of the mandible, just distal to the caudal end of the vertical buccal osteotomy cut. A 3D CBCT was used to identify the split pattern. Results In the total sample, 40% of the lingual splits ran vertically toward the lower border of the mandible (LSS1), 20% of the splits passed horizontally to the posterior border of the mandible (LSS2), 32.5% of the splits took place along the inferior alveolar canal (LSS3), and 7.5% of the splits were unfavourable fractures (LSS4). On the inferior border osteotomy sides, the distribution of LSS1, LSS2, LSS3, and LSS4 was 10 (25%), 6 (15%), 4 (10%), and 0 (00), respectively. Their distribution on the sides without inferior border osteotomy was 6 (15%), 8 (20%), 13 (32.5%), and 3 (7.5%), respectively. Statistical analysis revealed a significant difference between the two groups (p < 0.05). Conclusion Inferior border osteotomy tends to direct the lingual split fracture line toward the lower and posterior borders of the mandible and minimizes bad splits; however, further studies are needed to confirm our findings.
Related Links	https://head-face-med.biomedcentral.com/counter/pdf/10.1186/s13005-023-00396-9.pdf
Ending Page	7
Page Count	7
Starting Page	1
File Format	HTM / HTML
DOI	10.1186/s13005-023-00396-9
Journal	Head & Face Medicine
Issue Number	1
Volume Number	19
Language	English
Publisher	BioMed Central
Publisher Date	2023-11-07
Access Restriction	Open
Subject Keyword	Otorhinolaryngology Oral and Maxillofacial Surgery Dentistry Head and Neck Surgery Bad split Sagittal split Inferior border cut Lingual split Mandible Ramus
Content Type	Text
Resource Type	Article
Subject	Otorhinolaryngology Neurology (clinical) Dentistry
Journal Impact Factor	2.4/2023
5-Year Journal Impact Factor	2.9/2023

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