A comparison of postoperative, three-dimensional soft tissue changes in patients with skeletal class III malocclusions treated via orthodontics-first and surgery-first approaches

2021 ◽  
Author(s):  
Daigo Okamoto ◽  
Kensuke Yamauchi ◽  
Mai Yazaki ◽  
Shizu Saito ◽  
Hikari Suzuki ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Three Dimensional ◽  
Class Iii ◽  
Skeletal Class ◽  
Tissue Changes ◽  
Surgery First ◽  
Soft Tissue Changes

Three-dimensional analysis of lip soft tissue changes and related jaw changes in patients with skeletal class III malocclusion and facial asymmetry

2021 ◽  
pp. 1-14
Author(s):  
Wenjie Xu ◽  
Hao Tan ◽  
Xuehuan Meng ◽  
Ye Ming ◽  
Tao Wang ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Orthognathic Surgery ◽  
Three Dimensional ◽  
Facial Asymmetry ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Skeletal Class ◽  
Tissue Changes ◽  
Soft Tissue Changes ◽  
Jaw Surgery

OBJECTIVE: To investigate three-dimensional soft tissue changes of lips and related jaw changes in patients with skeletal class III malocclusion and facial asymmetry using cone-beam computerized tomography (CBCT). METHOD: This study included 46 CBCT scans of patients with aforementioned character before (T1) and 6–12 months after orthognathic surgery (T2). Subjects were divided into 2 groups according to two types of orthognathic surgery namely, the one-jaw surgery group who underwent bilateral sagittal splint ramus osteotomy (BSSRO) and the two-jaw surgery group who underwent Le Fort I osteotomy and BSSRO. Mimics 19.0 software are used for model reconstruction, landmark location and three-dimensional cephalometric analysis. Descriptive statistics and correlation analyses are used to investigate jaw hard tissue and lip soft tissue changes. RESULTS: In one-jaw group, the mandible shows changes in contour and position (p <  0.05), and the surgery causes changes of lip structure on the deviated side. While in two-jaw group, jaws only show changes in spatial position, and surgery changes contour of bilateral lips and nasolabial angle (p <  0.05). At the same time, lip symmetry increases significantly in both groups postoperatively. CONCLUSIONS: Orthognathic surgery can improve lip aesthetics in patients with skeletal class III malocclusion and facial asymmetry. However, changes induced by two surgical approaches are different. Surgeons should have a clear acquaintance with this difference to deal with different situations.

Soft tissue changes after a mandibular osteotomy for symmetric skeletal class III malocclusion

Odontology ◽  
2016 ◽  
Vol 105 (3) ◽  
pp. 375-381
Author(s):  
Seigo Ohba ◽  
Haruka Kohara ◽  
Takamitsu Koga ◽  
Takako Kawasaki ◽  
Kei-ichirou Miura ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Mandibular Osteotomy ◽  
Skeletal Class ◽  
Tissue Changes ◽  
Soft Tissue Changes

scholarly journals Changes in soft tissue profile during the treatment of Class III malocclusion treated with Class III activator

2013 ◽  
Vol 2 (2) ◽  
pp. 24-29
Author(s):  
MSA Mamun ◽  
MLA Hyder ◽  
MZ Hossain
Keyword(s):  
Soft Tissue ◽  
Treated Patient ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Facial Profile ◽  
Skeletal Class ◽  
Soft Tissue Profile ◽  
Tissue Changes ◽  
Soft Tissue Changes ◽  
Cephalometric Study

Objective: This longitudinal retrospective cephalometric study was undertaken in an attempt to evaluate the effect of Class III activator on the soft tissue structures in subjects with skeletal Class III. Methods: The material consisted of cephalometric films of 26 Class III patients (13females and 13 males, with a mean age of 13.58±4.38 years). Each treated patient was matched before treatment with Class III subject for sex and age. Differences at T1 and T2 were examined using paired t-test. Results: After treatment the patients' soft tissue profile improved significantly compare with before treatment. Conclusion: Soft tissue changes were found in patients treated by Class III activator in skeletal Class III patients. Clinical relevance: Class III activator may be an efficient method to improving soft tissue facial profile in Skeletal Class III malocclusion. DOI: http://dx.doi.org/10.3329/bjodfo.v2i2.16160 Ban J Orthod & Dentofac Orthop, April 2012; Vol-2, No.2, 24-29

Submandibular soft tissue changes after mandibular set-back surgery in skeletal Class III patients

2019 ◽  
Vol 120 (4) ◽  
pp. 301-309
Author(s):  
B.-Y. Yeo ◽  
J.-S. Kim ◽  
J. Kim ◽  
J.-Y. Kim ◽  
W.-W. Jang ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Class Iii ◽  
Skeletal Class ◽  
Back Surgery ◽  
Tissue Changes ◽  
Soft Tissue Changes
Sign in / Sign up

Export Citation Format

Share Document