Soft tissue changes associated with ASO/BSSRO and Le Fort I/BSSRO in skeletal Class III malocclusion with upper lip protrusion

2010 ◽  
Vol 40 (6) ◽  
pp. 383
Author(s):  
Ju-Man Kang ◽  
Yoon-Ji Kim ◽  
Je-Uk Park ◽  
Yoon-Ah Kook
Keyword(s):  
Soft Tissue ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Upper Lip ◽  
Le Fort ◽  
Skeletal Class ◽  
Tissue Changes ◽  
Soft Tissue Changes ◽  
Le Fort I

scholarly journals Soft tissue changes after mandibular setback and bimaxillary surgery in Class III patients

2013 ◽  
Vol 83 (5) ◽  
pp. 817-823 ◽  
Author(s):  
Davor Jokić ◽  
Dražen Jokić ◽  
Vedran Uglešić ◽  
Darko Macan ◽  
Predrag Knežević
Keyword(s):  
Soft Tissue ◽  
Class Iii ◽  
Upper Lip ◽  
Le Fort ◽  
Soft Tissue Change ◽  
Before And After ◽  
Tissue Changes ◽  
Bimaxillary Surgery ◽  
Soft Tissue Changes ◽  
Le Fort I

ABSTRACT Objective: To evaluate the relationship between soft tissue and bone structure for Class III patients before and after bilateral sagittal split osteotomy (BSSO) and bimaxillary orthognathic surgery; to determine the impact of other factors on soft tissue change; and to evaluate correlations between thickness of tissue before surgery, SNA, SNB, and ANB angles, and soft tissue changes. Materials and Methods: The study included 78 Class III patients treated only with BSSO or with BSSO and Le Fort I osteotomy. Lateral cephalograms were taken before and 3 months to 1 year after surgery. After all points of the Zagreb82 and Legan and Burstone profile analysis were traced, the ratio of five soft tissue points before and after surgery was evaluated. Results: Soft tissue between points Sn and A and upper lip showed statistically significant changes for patients treated with bimaxillary surgery and BSSO. Only gender had an influence on soft tissue change. The correlation between soft tissue thickness and changes after surgery was significant. A change in SNB angle correlated with upper lip thickness for patients treated with BSSO but not for patients treated with BSSO and Le Fort I. SNA angle changes correlated with soft tissue changes between points Sn and A. Conclusion: Results of this study show soft tissue changes after BSSO and BSSO and Le Fort I and eliminate the deficiencies that were indicated in the meta-analysis of soft tissue changes from a previous study.

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

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.

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