scholarly journals Changes in the facial soft tissue profile after maxillary orthognathic surgery

2021 ◽  
Author(s):  
S. Rupperti ◽  
P. Winterhalder ◽  
S. Krennmair ◽  
S. Holberg ◽  
C. Holberg ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Linear Correlation ◽  
Prediction Error ◽  
Orthognathic Surgery ◽  
Reference Plane ◽  
Rigid Fixation ◽  
Wide Spread ◽  
Facial Soft Tissue ◽  
Maxillary Osteotomy ◽  
Soft Tissue Profile

Abstract Objectives To compare the changes of the soft tissue profile in relation to the displacement of the underlying hard structures in maxillary orthognathic surgery and to contribute to the esthetic prediction of the facial profile after surgical procedures. Materials and methods We analyzed the sagittal changes in the facial soft tissue profile related to surgical changes in skeletal structures after maxillary osteotomy in a retrospective study. The study sample comprised 115 adult patients between the ages of 18–50 years who had undergone maxillary orthognathic surgery and interdisciplinary orthodontic treatment at the Department of Orthodontics, Ludwig-Maximilians University of Munich, Germany. LeFort I osteotomy cases in both maxillary monognathic and bignathic osteotomy procedures were included. All subjects had received rigid fixation. A cephalometric analysis of presurgical and postsurgical cephalograms was performed and the correlations between hard tissue and soft tissue change ratios were evaluated using a bivariate linear regression analysis. A vertical line through the landmark sella (S) perpendicular to the nasion-sella line (NSL) served as the reference plane. Results The subnasale (Sn) followed the A point (A) by 57%, the soft tissue A point (A′) followed the A point (A) by 73% and the upper lip, represented by the landmark labrale superius (Ls) followed the upper incisor (Is) by 73%; all three in a linear correlation with a mean prediction error of nearly 2 mm. Conclusion The scatterplots show a linear correlation with a wide spread for all three pairs of reference points. The wide spread and the high prediction error of almost 2 mm indicate low predictability of the expected lip position and Sn.

scholarly journals Soft Tissue Changes after Orthognathic Surgery: A Study

2011 ◽  
Vol 1 (1) ◽  
pp. 47-51 ◽  
Author(s):  
Chandran Upadhyaya ◽  
Mohan Baliga ◽  
Premalatha Shetty
Keyword(s):  
Soft Tissue ◽  
Orthognathic Surgery ◽  
Hard Tissue ◽  
Facial Soft Tissue ◽  
Lower Lip ◽  
Maxillary Osteotomy ◽  
Alar Base ◽  
Soft Tissue Profile ◽  
Tissue Changes ◽  
Soft Tissue Changes

Aim and objective: The main aim and objectives of this study was to determine the changes in the facial soft tissue profile following orthognathic surgery, to evaluate eventual treatment effects on stability of facial aesthetics and degree of predictability of these changes. Materials and method: 15 numbers of patients underwent with le fort I, anterior maxillary osteotomy, genioplasty and bimaxillary surgery. The alar base cinch suture and the V-Y closure techniques were used in each maxillary procedure. The criteria applied included an average follow-up of 6 months post-operatively. Results: In this study preoperative and postoperative cephalometric tracing were compared to analyze the soft tissue profile changes in relation to hard tissue changes in both upper and lower lip and chin regions after double jaw surgery. Only horizontal changes were analyzed for which an X-Y coordinate system was used. The upper lip responded variably to the direction and amount of maxillary positioning. The predictability and the significance of changes of soft tissue in relation to hard tissue are variable as it reaches towards the nose. Conclusion: It is important for the clinician to realize that numerous factors of variability exist so that he can understand that the soft-tissue profile will sometimes deviate quite markedly from what is expected, in spite of careful planning.

scholarly journals Facial Soft Tissue Profile Following Bimaxillary Orthognathic Surgery

2008 ◽  
Vol 78 (1) ◽  
pp. 50-57 ◽  
Author(s):  
Ayse Tuba Altug-Atac ◽  
Halise Bolatoglu ◽  
Ufuk Toygar Memikoglu
Keyword(s):  
Soft Tissue ◽  
Orthognathic Surgery ◽  
Soft Tissues ◽  
Skeletal Structure ◽  
Dramatic Improvement ◽  
Facial Soft Tissue ◽  
Forward Movement ◽  
Lower Lip ◽  
Soft Tissue Profile ◽  
Bimaxillary Orthognathic Surgery

Abstract Objective: To determine the changes in the position and area of nasal and labial soft tissues in adult skeletal Class III patients who underwent bimaxillary orthognathic surgery. Materials and Methods: Pretreatment (T1), preoperative (T2), and posttreatment (T3) cephalometric variables and upper-lower lip areas were measured on lateral cephalometric radiographs for 20 individuals (9 male, 11 female; mean age 21.3 years at T1, 22.4 years at T2, and 23.4 years at T3) who had maxillary advancement and mandibular setback. Analysis of variance (ANOVA) and Duncan tests were used to compare the cephalometric and area measurements at the beginning of treatment, and at presurgery and postsurgery, respectively. Paired t-tests were also performed to analyze changes within the periods. Results: The tip of the nose was affected less with the movement of the underlying skeletal structure (0.25%), while the soft tissue B point (B′) moved equally with the skeletal B point. As the maxilla related variables increased due to the forward movement, the upper labial areas decreased. With the backward movement of the mandible, the middle and inferior lower labial areas increased, while the superior lower labial area decreased. Conclusions: The results of our study suggest that the dramatic improvement in the facial profiles of the bimaxillary surgery patients is primarily related to the backward movement of the mandible and the significant reduction in the superior lower lip area.

Changes in the facial soft-tissue profile after mandibular orthognathic surgery

2018 ◽  
Vol 23 (4) ◽  
pp. 1771-1776 ◽  
Author(s):  
Stefan Rupperti ◽  
P. Winterhalder ◽  
I. Rudzki ◽  
G. Mast ◽  
C. Holberg
Keyword(s):  
Soft Tissue ◽  
Orthognathic Surgery ◽  
Facial Soft Tissue ◽  
Soft Tissue Profile

Comparison of Two Computer-Animated Imaging Programs for Quantifying Facial Profile Preference

1996 ◽  
Vol 82 (3_suppl) ◽  
pp. 1251-1264 ◽  
Author(s):  
Donald B. Giddon ◽  
Carla A. Evans ◽  
Debbie Lynn Bernier ◽  
Jason A. Kinchen
Keyword(s):  
Soft Tissue ◽  
Dental Occlusion ◽  
Facial Appearance ◽  
Facial Morphology ◽  
Mouse Button ◽  
Facial Soft Tissue ◽  
Facial Profile ◽  
Computer Mouse ◽  
Soft Tissue Profile ◽  
User Friendly

To establish the physical basis of subjective judgments of facial appearance, two novel computer-imaging programs differing in method of preparation and presentation of 5 features of the facial soft-tissue profile of 4 faces representing 4 different classifications of dental occlusion were compared. Images of facial soft tissue of 5 features were digitized and “animated” from 16 discrete distortions or morphed from the two extremes of each feature. 12 volunteer judges responded to both the “animated” and morphed presentations by pressing the computer mouse button when the image became acceptable and releasing the button when the image was no longer acceptable. They also pressed the mouse button when the most pleasing distortion appeared from either direction. Aggregating responses to counterbalanced trials and features across judges yielded high correlations between the programs for midpoint of acceptability. Although both programs provide reliable and valid measures of subjective acceptability of present and proposed changes in facial morphology, the new morphing program is more user-friendly than the “animated” method.

scholarly journals Changes in soft tissue facial profile of class II skeletal malocclusion patients with retrognathic mandible treated with twin block appliance

2019 ◽  
Vol 31 (1) ◽  
pp. 32
Author(s):  
Ng Hui Lin ◽  
Eky Setiawan Soeria Soemantri ◽  
Gita Gayatri
Keyword(s):  
Soft Tissue ◽  
Class Ii ◽  
Facial Soft Tissue ◽  
Profile Angle ◽  
Facial Profile ◽  
Twin Block ◽  
Skeletal Malocclusion ◽  
Soft Tissue Profile ◽  
Significant Difference ◽  
Soft Tissue Changes

Introduction: The soft tissue aspect in orthodontics treatment has gained attention in the last few years. The soft tissue profile is said to reflect the underlying skeletal profile, which causes a convex profile in patients with class II skeletal malocclusion. This research was aimed to determine the changes in the soft tissue facial profile of class II skeletal malocclusion patients with retrognathic mandible after twin block treatment. Methods: The type of research used in this study was retrospective descriptive research with paired t-test. The population was children aged 10-13 years old with class II skeletal malocclusion that were treated with twin block appliance in the Faculty of Dentistry Universitas Padjadjaran, Indonesia. The results of soft tissue changes before and after twin block treatment were compared. Results: There was an insignificant increase in soft tissue profile angle and Holdaway’s soft tissue angle after twin block treatment (p > 0.05). Whereas, Holdaway’s H-angle was decreasing and Merrifield’s Z-angle was increasing after twin block treatment, with statistically significant difference (p < 0.05). Conclusion: There was a decrease of H-angle, indicates a reduction in facial convexity and improvement of the facial profile after twin block treatment, but no difference in soft tissue profile angle and Holdaway’s soft tissue angle after twin block treatment. Keywords: Facial soft tissue profile, class II skeletal malocclusion, retrognathic mandible, twin block appliance

Sign in / Sign up

Export Citation Format

Share Document