scholarly journals Clinical Comparative Study between Sagittal Split Ramus Osteotomy and Intraoral Vertical Ramus Osteotomy for Mandibular Setback

2010 ◽  
Vol 20 (3) ◽  
pp. 205-210 ◽  
Author(s):  
KENSUKE YAMAUCHI ◽  
TAKESHI KANEUJI ◽  
SHINNOSUKE NOGAMI ◽  
YOSHIHIRO YAMASHITA ◽  
TETSU TAKAHASHI ◽  
...  
Keyword(s):  
Comparative Study ◽  
Sagittal Split Ramus Osteotomy ◽  
Mandibular Setback ◽  
Intraoral Vertical Ramus Osteotomy ◽  
Vertical Ramus Osteotomy

scholarly journals Hard and Soft Tissue Stability of Orthognathic Surgery

2009 ◽  
Vol 79 (1) ◽  
pp. 158-165 ◽  
Author(s):  
Toru Kitahara ◽  
Akihiko Nakasima ◽  
Shinichi Kurahara ◽  
Yuji Shiratsuchi
Keyword(s):  
Soft Tissue ◽  
Postoperative Treatment ◽  
Rigid Fixation ◽  
Sagittal Split Ramus Osteotomy ◽  
Mandibular Setback ◽  
Soft Tissue Profile ◽  
Angular Measurements ◽  
Intraoral Vertical Ramus Osteotomy ◽  
Soft Tissue Changes ◽  
Vertical Ramus Osteotomy

Abstract Objective: To test the hypothesis that there is no difference in the stability of the hard and soft tissue changes following a surgical mandibular setback using a sagittal split ramus osteotomy or an intraoral vertical ramus osteotomy. Materials and Methods: The samples consisted of 45 female patients with mandibular prognathism, who were divided into two groups. Twenty-three underwent a sagittal split ramus osteotomy (SSRO) with rigid fixation by titanium mini-screws and maxillomandibular fixation (MMF) for 14.0 ± 0.7 days. Twenty-two underwent intraoral vertical ramus osteotomy (IVRO) without rigid fixation, and MMF was released 21.5 ± 3.3 days after surgery. Data were collected from standardized cephalometric radiographs taken at the start of preoperative orthodontic treatment (T1), immediately after surgery (MMF, T2), and the completion of postoperative treatment (T3). Angular measurements were compared on each of T1, T2, and T3. Results: There were no significant differences in the pretreatment hard and soft tissue morphology between the SSRO and IVRO. However, when fixation was released, the mandible was posteriorly positioned in the IVRO group. In the soft tissue profile, the mental region was located backward in the IVRO group at postoperative stage (T3). Conclusions: The hypothesis is rejected. The soft tissue profile of the IVRO group especially showed a retromandibular position after postoperative treatment in comparison with the SSRO group. This tendency of the IVRO group would contribute to the database for treatment planning and prediction.

The different effects of intraoral vertical ramus osteotomy (IVRO) and sagittal split ramus osteotomy (SSRO) on mandibular border movement

CRANIO® ◽  
2017 ◽  
Vol 36 (4) ◽  
pp. 228-233
Author(s):  
Hiroki Komori ◽  
Noriaki Kawanabe ◽  
Tomoki Kataoka ◽  
Yui Kato ◽  
Atsuro Fujisawa ◽  
...  
Keyword(s):  
Sagittal Split Ramus Osteotomy ◽  
Intraoral Vertical Ramus Osteotomy ◽  
Vertical Ramus Osteotomy

scholarly journals Changes of Hyoid, Tongue and Pharyngeal Airway after Mandibular Setback Surgery by Intraoral Vertical Ramus Osteotomy

2010 ◽  
Vol 80 (2) ◽  
pp. 302-308 ◽  
Author(s):  
Soonshin Hwang ◽  
Chooryung Judi Chung ◽  
Yoon-Jeong Choi ◽  
Jong-Ki Huh ◽  
Kyung-Ho Kim
Keyword(s):  
Pharyngeal Airway ◽  
Mandibular Setback ◽  
Intraoral Vertical Ramus Osteotomy ◽  
Mandibular Setback Surgery ◽  
Vertical Ramus Osteotomy
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