scholarly journals Facial soft-tissue changes after rapid maxillary expansion analyzed with 3-dimensional stereophotogrammetry: A randomized, controlled clinical trial

2016 ◽  
Vol 86 (6) ◽  
pp. 934-942 ◽  
Author(s):  
Asli Baysal ◽  
Mehmet Ali Ozturk ◽  
Ahmet Oguz Sahan ◽  
Tancan Uysal
Keyword(s):  
Treatment Group ◽  
Soft Tissue ◽  
Untreated Control ◽  
Rapid Maxillary Expansion ◽  
Control Group ◽  
Controlled Clinical Trial ◽  
Maxillary Expansion ◽  
Alar Base ◽  
Tissue Changes ◽  
Soft Tissue Changes

ABSTRACT Objective: To evaluate three-dimensional (3-D) soft tissue facial changes following rapid maxillary expansion (RME) and to compare these changes with an untreated control group. Materials and Methods: Patients who need RME as a part of their orthodontic treatment were randomly divided into two groups of 17 patients each. Eligibility criteria included having maxillary transverse deficiency with crossbite, and to be in the normal range according to body mass index. In the first group (mean age  =  13.4 ± 1.2 years), expansion was performed. The second group received no treatment initially and served as untreated control (mean age  =  12.8 ± 1.3 years). Skeletal and soft tissue changes were evaluated using posteroanterior cephalograms and 3-D facial images. The primary outcome of this study was to assess the soft tissue changes. The secondary outcomes were evaluation hard tissue and soft tissue relations. Randomization was done with preprepared random number tables. Blinding was applicable for outcome assessment only. MANOVA, t-test, and correlation analyses were used (P  =  .05). Results: In both groups, there was a general trend of increase for the transverse skeletal measurements, but these increases were more limited in the control group. Alar base width was greater in the treatment group (P  =  .002). Pogonion soft tissue point (P  =  .022) was located more posteriorly in the expansion group compared with the control group. Conclusions: Soft tissue changes between groups were similar, except for the alar base, which became wider in the treatment group. Weak correlations were found between the skeletal and soft tissue changes.

Soft Tissue Alterations Following Protraction Approaches with and without Rapid Maxillary Expansion

2014 ◽  
Vol 38 (3) ◽  
pp. 277-283 ◽  
Author(s):  
N Canigur Bavbek ◽  
B Balos Tuncer ◽  
T Tortop
Keyword(s):  
Soft Tissue ◽  
Rapid Maxillary Expansion ◽  
Chronological Age ◽  
Control Group ◽  
Class Iii ◽  
Maxillary Expansion ◽  
Upper Lip ◽  
Lateral Cephalograms ◽  
Tissue Changes ◽  
Soft Tissue Changes

The aim of this study was to compare the soft tissue changes influenced by reverse headgear therapy with (RHg+RME) or without (RHg) rapid maxillary expansion with each other and with an untreated Class III control group (C). Study design: RHg group (10 girls, 6 boys, mean chronological age 11.1 years), RHg+RME group (12 girls, 4 boys, mean chronological age 10.8 years) and C group (7 girls, 11 boys, mean chronological age 10.2 years) comprised skeletally Class III patients with maxillary deficiency. Soft tissue measurements were made on lateral cephalograms at the beginning and at the end of the treatment and observation periods. Changes within each group and the differences between the groups were analyzed by paired t-test; the differences between the groups were determined by variance analysis and Duncan test with a significance level p<0.05. Results: The sagittal depth of nose and maxilla, upper lip height and protrusion were significantly increased in treatment groups and the differences were significant when compared to control group (p<0.05). Conclusion: Forward movement of upper lip was more prominent in RHg group. Reverse headgear treatment with or without RME revealed significant soft tissue changes when compared with a growing Class III control group with the same skeletal characteristics.

scholarly journals Evaluation of the Soft Tissue Changes after Rapid Maxillary Expansion Using a Handheld Three-Dimensional Scanner: A Prospective Study

2021 ◽  
Vol 18 (7) ◽  
pp. 3379
Author(s):  
Ali Alkhayer ◽  
Roland Becsei ◽  
László Hegedűs ◽  
László Párkányi ◽  
József Piffkó ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Prospective Study ◽  
Morphological Changes ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Facial Soft Tissue ◽  
Retention Period ◽  
The Face ◽  
Tissue Changes ◽  
Soft Tissue Changes

Facial soft tissue esthetics is a priority in orthodontic treatment, and emerging of the digital technologies can offer new methods to help the orthodontist toward an esthetic outcome. This prospective study aimed to assess the soft tissue changes of the face after six months of retention following Rapid Maxillary Expansion (RME). The sample consisted of 25 patients (13 females, 12 males, mean age: 11.6 years) who presented with unilateral or bilateral posterior crossbite requiring RME, which was performed with a Hyrax expander. 3D facial images were obtained before treatment (T0) and at the end of a six-month retention period after the treatment (T1) using a structured-light 3D handheld scanner. Linear and angular measurements were performed and 3D deviation analyses were done for six morphological regions of the face. Significant changes in various areas of the nasal and the upper lip regions were observed. Based on the results of the study and within the limitations of the study, RME with a Hyrax expander results in significant morphological changes of the face after a six-month retention period.

scholarly journals Evaluation of immediate soft tissue changes after rapid maxillary expansion

2012 ◽  
Vol 17 (5) ◽  
pp. 157-164 ◽  
Author(s):  
Ki Beom Kim ◽  
Daniel Adams ◽  
Eustaquio A. Araújo ◽  
Rolf G. Behrents
Keyword(s):  
Soft Tissue ◽  
Rapid Maxillary Expansion ◽  
Post Treatment ◽  
Maxillary Expansion ◽  
Tissue Changes ◽  
Soft Tissue Changes ◽  
Direct Measures ◽  
Landmark Position ◽  
Full Activation ◽  
Anterior Posterior

OBJECTIVE: To evaluate immediate soft tissue changes following rapid maxillary expansion (RME) in growing patients, using cone beam computed tomography (CBCT). METHODS: Twenty-three consecutive patients (10 male, 13 female) treated by RME were selected. Patients were scanned using CBCT prior to placement of the rapid maxillary expander (T0), then immediately following full activation of the appliance (T1). Defined landmarks were then located on the pre- and post-treatment orientated images. Change in landmark position from pre- to post-treatment was then measured. In addition to landmarks, 10 direct measures were made to determine distance change without regard to direction to measure soft tissue change of the lips. RESULTS: Significant transverse expansion was measured on most soft tissue landmark locations. All the measures made showed significant change in the lip position with a lengthening of the vertical dimension of the upper lip, and a generalized decrease of anterior-posterior thickness of both the upper and lower lips. CONCLUSIONS: Significant changes in the soft tissue do occur with RME treatment. There is a transverse widening of the midface, and a thinning of the lips.

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