Three-dimensional investigation of facial surface asymmetries in skeletal malocclusion patients before and after orthodontic treatment combined with orthognathic surgery

2014 ◽  
Vol 75 (2) ◽  
pp. 85-95 ◽  
Author(s):  
M. Blockhaus ◽  
J. Kochel ◽  
J. Hartmann ◽  
A. Stellzig-Eisenhauer ◽  
P. Meyer-Marcotty
Keyword(s):  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Three Dimensional ◽  
Skeletal Malocclusion ◽  
Before And After

scholarly journals Oral health related quality of life of patients with class III skeletal malocclusion before and after orthognathic surgery

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Farzad Rezaei ◽  
Hiwa Masalehi ◽  
Amin Golshah ◽  
Mohammad Moslem Imani
Keyword(s):  
Quality Of Life ◽  
Oral Health ◽  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Class Iii ◽  
Skeletal Malocclusion ◽  
Before And After ◽  
Related Quality ◽  
Health Related

Abstract Background Orthognathic surgery includes improvement of morphology and function of occlusion as well as psychological perception and oral health-related quality of life (OHRQoL) of patients. The aim of this study was to determine the OHRQoL of patients with class III skeletal malocclusion before and after orthognathic surgery. Materials and methods A total of 112 skeletal class III patients including 39 (34.8%) males and 73 (65.2%) females participated in this descriptive quasi-experimental study in three groups: “prior to orthodontic treatment” (n = 25); “under orthodontic treatment and prior to surgery” (n = 65), and “after surgery” (n = 25). All patients filled out a demographic information questionnaire, the oral health impact profile-14 (OHIP-14), and the orthognathic quality of life questionnaire (OQLQ) under the supervision of the examiner. Data were analyzed using ANOVA, independent samples t-test, Mann Whitney test, and Kruskal-Wallis test. Results OHRQoL summary score changed from 14.5 prior to orthodontic treatment to 23.4 prior to surgery and during orthodontic treatment to 5.4 after surgery. These OHRQoL changes were statistically significant (P < 0.001). Conclusions Orthognathic surgery matters to patients with class III skeletal malocclusion and significantly improves their OHRQoL.

scholarly journals Modern trends in Class III orthognathic treatment: A time series analysis

2016 ◽  
Vol 87 (2) ◽  
pp. 269-278 ◽  
Author(s):  
Chang-Hoon Lee ◽  
Hyun-Hee Park ◽  
Byoung-Moo Seo ◽  
Shin-Jae Lee
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Treatment Time ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Time Of Surgery ◽  
Series Analysis ◽  
Before And After

ABSTRACT Objective: To examine the current trends in surgical-orthodontic treatment for patients with Class III malocclusion using time-series analysis. Materials and Methods: The records of 2994 consecutive patients who underwent orthognathic surgery from January 1, 2004, through December 31, 2015, at Seoul National University Dental Hospital, Seoul, Korea, were reviewed. Clinical data from each surgical and orthodontic treatment record included patient's sex, age at the time of surgery, malocclusion classification, type of orthognathic surgical procedure, place where the orthodontic treatment was performed, orthodontic treatment modality, and time elapsed for pre- and postoperative orthodontic treatment. Results: Out of the orthognathic surgery patients, 86% had Class III malocclusion. Among them, two-jaw surgeries have become by far the most common orthognathic surgical treatment these days. The age at the time of surgery and the number of new patients had seasonal variations, which demonstrated opposing patterns. There was neither positive nor negative correlation between pre- and postoperative orthodontic treatment time. Elapsed orthodontic treatment time for both before and after Class III orthognathic surgeries has been decreasing over the years. Conclusion: Results of the time series analysis might provide clinicians with some insights into current surgical and orthodontic management.

scholarly journals EVALUATION OF IMPACT OF COMBINED ORTHODONTIC AND ORTHOGNATHIC TREATMENT PROCEDURES ON THE LIFE QUALITY OF PATIENTS WITH SKELETAL MALOCCLUSION

2020 ◽  
pp. 27-31
Author(s):  
Ranjith Raveendran ◽  
Saju N S ◽  
Sameera G Nath
Keyword(s):  
Orthognathic Surgery ◽  
Orthodontic Treatment ◽  
Treatment Plan ◽  
Life Quality ◽  
Life Questionnaire ◽  
Skeletal Malocclusion ◽  
Number Of Patients ◽  
Treatment Procedures ◽  
The Impact

Background: The number of patients undergoing combined orthodontic treatment and orthognathic surgery is increasing. Hence, this study aimed to examine the impact of combined orthodontic and orthognathic treatment procedures on the life quality of patients with skeletal malocclusion. Materials and methods: 15 patients who had to undergo combined orthodontic and orthognathic treatment procedures were subjected to 22-item Orthognathic Quality of Life Questionnaire customised for the study. The questions were grouped into 4 domains – aesthethic, awareness, pschyological and social domains. They were assessed in three time lines - rst when they are explained and made aware of the treatment plan (T0), T1 when the orthodontic treatment is almost complete, and the patient is made ready for orthognathic surgery, then 6 months after the completion of the combined orthodontic-orthognathic surgery (T2). Results: Out of 15 patients, 9 were females and 6 were males between the age of 18-25 years. As the treatment progressed changes were noted in the patient's attitude. During T1 signicant change was observed in functional outcome – chewing. At T2 signicant changes were observe in esthetic, functional, social and psychological components (p<0.001). The treatment outcome did create a positive change in the patients by correcting their skeletal and dental abnormalities. Conclusion: The esthetic, functional, social and psychological outcomes of patients who have undergone combined orthodontic and orthognathic treatments are better post operatively.

scholarly journals Analysis of the Morphological Characteristics of the Palatal Rugae for Three-Dimensional Superimposition of Digital Models in Korean Subjects

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Sung-Hwan Choi ◽  
Kyongmin Koh ◽  
Kee-Joon Lee ◽  
Chung-Ju Hwang ◽  
Jung-Yul Cha
Keyword(s):  
Orthodontic Treatment ◽  
Three Dimensional ◽  
Morphological Characteristics ◽  
Digital Model ◽  
Initial Visit ◽  
Reference Area ◽  
The Third ◽  
Palatal Rugae ◽  
Before And After ◽  
Left And Right

Objective. The aim of this study was to evaluate the morphological characteristics of the palatal rugae in Korean subjects to determine whether the palatal rugae can be used as an appropriate reference area for three-dimensional digital model superimpositions. Materials and Methods. In total, 343 patients (110 men, 233 women; mean age, 25.6±8.2 years) who had a digital model taken at their initial visit were included, and the numbers and types of right and left palatal rugae were investigated according to the primary, secondary, and fragmentary rugae. Finally, the differences in the positions of the third primary ruga were investigated according to the presence of additional rugae posterior to the third primary ruga. Results. The number of primary palatal rugae ranged from one to six, with 43.5% of the subjects having three primary rugae and 36.1% having four primary rugae; there were no significant differences between sexes. Except for the fragment rugae, the numbers of primary and secondary rugae were not significantly different between the left and right sides. The third primary ruga was located more significantly anteriorly when there was an additional ruga posterior to the third primary ruga (P < 0.001). Conclusions. The numbers of the palatal rugae vary greatly among individuals, and this affects the anteroposterior position of the third primary ruga. When the third primary ruga is located anteriorly, care should be taken when using it as a reference area for superimposition with a digital model before and after orthodontic treatment.

scholarly journals Effect of post–orthognathic surgery condylar axis changes on condylar morphology as determined by 3-dimensional surface reconstruction

2013 ◽  
Vol 84 (2) ◽  
pp. 316-321 ◽  
Author(s):  
Soo-Bum An ◽  
Soo-Byung Park ◽  
Yong-Il Kim ◽  
Woo-Sung Son
Keyword(s):  
Orthognathic Surgery ◽  
Pearson Correlation ◽  
Three Dimensional ◽  
Class Iii ◽  
Absolute Deviation ◽  
Skeletal Class ◽  
Before And After ◽  
Group 2 ◽  
Jaw Surgery ◽  
Surface Changes

ABSTRACT Objective: To evaluate the effect of postoperative condylar axis changes on mandibular condylar remodeling by comparing the condylar head in three-dimensional (3D) surface reconstructions before and after surgery in skeletal Class III deformities (one-jaw [mandibular setback] or two-jaw surgery), and also to determine the relationship between condylar inward rotation and condylar surface remodeling after orthognathic surgery. Materials and Methods: A retrospective analysis was conducted of 30 patients with skeletal Class III deformities who had received orthognathic surgery. Group 1 underwent one-jaw surgery (10 men, five women, age 22.4 ± 3.3 years), and group 2 underwent two-jaw surgery (10 men, five women, age 22.3 ± 2.2 years). Sixty condyles were reconstructed and superimposed pre- and postoperatively to compare the changes of condylar surfaces. The relation between the condylar axis change and the surface change using the Pearson correlation were investigated from the 3D image software. Results: Condylar surface changes before and after the surgery were significant. The postoperative inward rotation of the condyles was correlated with the average absolute deviation of the condyles, regardless of the surgery type (one- or 2-jaw surgery; r  =  .70, P &lt; .05). Conclusion: After orthognathic surgery, condylar surface changes occurred, and condylar inward rotation was closely related to changes of condylar surface.

scholarly journals Postsurgical Stability of Temporomandibular Joint of Skeletal Class III Patients Treated with 2-Jaw Orthognathic Surgery via Computer-Aided Three-Dimensional Simulation and Navigation in Orthognathic Surgery (CASNOS)

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Ling-Chun Wang ◽  
Yi-Hao Lee ◽  
Chi-Yu Tsai ◽  
Te-Ju Wu ◽  
Ya-Ying Teng ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Three Dimensional ◽  
Class Iii ◽  
Skeletal Class ◽  
Computer Aided ◽  
Before And After ◽  
Bimaxillary Orthognathic Surgery ◽  
The Mean ◽  
Dimensional Simulation ◽  
The Right

Objective. The aim of this study is to clarify the postsurgical stability of temporomandibular joints in skeletal class III patients treated with 2-jaw orthognathic surgery which was performed utilizing computer-aided three-dimensional simulation and navigation in orthognathic surgery (CASNOS) protocol. Materials and Methods. 23 consecutive nongrowing skeletal class III patients with mandibular prognathism associated with maxillary retrognathism treated with 2-jaw orthognathic surgery between 2018 and 2019 were enrolled in this study. The surgery was planned according to the standardized protocol of CASNOS (computer-aided three-dimensional simulation and navigation in orthognathic surgery). Computed tomography (CT) scans were performed in all patients 3 weeks presurgically and 6 months postsurgically. ITKSNAP and 3D Slicer software were used to reconstruct three-dimensional facial skeletal images, to carry out image segmentation, and to superimpose and quantify the TMJ position changes before and after surgery. Amount of displacement of the most medial and lateral points of the condyles and the change of intercondylar angles were measured to evaluate the postsurgical stability of TMJ. Results. A total amount of 23 skeletal class III patients female : male = 12 : 11 with age ranged from 20.3 to 33.5 years (mean: 24.39 ± 4.8   years   old ) underwent Le Fort I maxillary advancement and BSSO setback of the mandible. The surgical outcome revealed the satisfactory correction of their skeletal deformities. The mean displacement of the right most lateral condylar point (RL-RL ′ ) was 1.04 ± 0.42   mm and the mean displacement of the left most lateral condylar point (LL-LL ′ ) was 1.19 ± 0.41   mm . The mean displacement of the right most medial condylar point (RM-RM ′ ) was 1.03 ± 0.39   mm and the left most medial condylar point (LM-LM ′ ) was 0.96 ± 0.39   mm . The mean intercondylar angle was 161.61 ± 5.08 ° presurgically and 159.28 ± 4.92 ° postsurgically. Conclusion. The postsurgical position of TM joint condyles in our study only presented a mild change with all the landmark displacement within a range of 1.2 mm. This indicates the bimaxillary orthognathic surgery via 3D CASNOS protocol can achieve a desired and stable result of TMJ position in treating skeletal class III adult patients with retrognathic maxilla and prognathic mandible.

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