Mandibular Stability After Sagittal Split Ramus Osteotomy With Hybrid Technique in Asymmetric Patients.
Journal
The Journal of craniofacial surgery
ISSN: 1536-3732
Titre abrégé: J Craniofac Surg
Pays: United States
ID NLM: 9010410
Informations de publication
Date de publication:
01 May 2022
01 May 2022
Historique:
pubmed:
21
9
2021
medline:
24
6
2022
entrez:
20
9
2021
Statut:
ppublish
Résumé
The hybrid technique after bilateral sagittal split ramus osteotomy is an internal fixation method using monocortical mini-plates and additional bicortical positional screws. In this study, we analyzed the postoperative stability of 23 patients with mandibular asymmetry who underwent bilateral sagittal split ramus osteotomy and hybrid fixation with or without LeFort I osteotomy. Anatomical landmarks of the deviated and non-deviated sides of the jaw were established to measure the angle and distance to the reference plane in three-dimensional cone beam computed tomography images. We analyzed the positional changes and correlations of the reference points at preoperative (T1), postoperative 2 weeks (T2), and postoperative 1 year (T3). There were significant differences in preoperative position of the upper and lower molar cervix alveolar crest to the reference plane (U6-X and L6-X) and the condylion angles between deviated and non-deviated sides. Postoperatively (T2-T3), each reference point had no statistically significant positional change. Pearson correlation coefficient between the amount of menton deviation (ME-X at T1) and positional change of menton after surgery (T2-T3) was 0.30, and P value was 0.168. The hybrid fixation technique is an effective fixation method for achieving postoperative stability for mandibular asymmetry.
Identifiants
pubmed: 34538794
doi: 10.1097/SCS.0000000000008157
pii: 00001665-900000000-92208
doi:
Types de publication
Journal Article
Langues
eng
Pagination
920-925Informations de copyright
Copyright © 2021 by Mutaz B. Habal, MD.
Déclaration de conflit d'intérêts
The authors report no conflicts of interest.
Références
Park WJ, Hwang SJ. Bone healing of an unfixed bone fragment of the distal segment in sagittal split ramus osteotomy. J Craniofac Surg 2014; 25:667–671.
Ellis E 3rd. A method to passively align the sagittal ramus osteotomy segments. J Oral Maxillofac Surg 2007; 65:2125–2130.
Schwartz HC. Efficient surgical management of mandibular asymmetry. J Oral Maxillofac Surg 2011; 69:645–654.
Shetty V, Freymiller E, McBrearty D, et al. Experimental analysis of functional stability of sagittal split ramus osteotomies secured by miniplates and position screws. J Oral Maxillofac Surg 1996; 54:1317–1324.
Kogou T, Takaki T, Shibahara T. Three-dimensional analysis and evaluation in orthognathic surgical cases with facial asymmetry. Bull Tokyo Dent Coll 2018; 59:147–161.
Lee JH, Kim SO, Jeon JH. The assessment of the stability in mandibular setback surgery related to spatial factors under rotational control of the proximal segment. Oral Surg Oral Med Oral Pathol Oral Radiol 2014; 117:560–566.
Epker BN, Fish LC. Dentofacial deformities—integrated orthodontic and surgical correction, volumes I and II. Am J Orthod Dentofacial Orthop 1987; 91:83.
Yang HJ, Hwang SJ. Change in condylar position in posterior bending osteotomy minimizing condylar torque in BSSRO for facial asymmetry. J Craniomaxillofac Surg 2014; 42:325–332.
Yoshida K, Rivera RS, Kaneko M, et al. Minimizing displacement of the proximal segment after bilateral sagittal split ramus osteotomy in asymmetric cases. J Oral Maxillofac Surg 2001; 59:15–18.
Ueki K, Degerliyurt K, Hashiba Y, et al. Horizontal changes in the condylar head after sagittal split ramus osteotomy with bent plate fixation. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2008; 106:656–661.
Schwartz HC, Relle RJ. Bicortical-monocortical fixation of the sagittal mandibular osteotomy. J Oral Maxillofac Surg 1996; 54:234–235.
Moroi A, Yoshizawa K, Iguchi R, et al. Comparison of the computed tomography values of the bone fragment gap after sagittal split ramus osteotomy in mandibular prognathism with and without asymmetry. Int J Oral Max Surg 2016; 45:1520–1525.
Kawakami S, Tsukada S, Okada T, et al. Clinical management of mandibular and maxillar osteotomies for facial asymmetry. J Jpn J Plast Surg 1987; 4:338–350.