Three dimensional evaluation of soft tissue after orthognathic surgery

Jung, Junho; Lee, Chi-Heun; Lee, Jungwoo; Choi, Byung‐Joon

doi:10.1186/s13005-018-0179-z

Cited by 50 publications

(35 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Jung et al concluded that the accuracy of the structured light system is comparable to the direct anthropometric measurements. Furthermore, it was reported that more reliable 3D datasets are expected if the face of the subject was scanned from a couple of angles at the same time in less than 1 s [ 17 ]. Lee et al investigated the reliability of 34 facial landmarks using a 3D handheld structured-light scanner (Artec Eva) and they observed constellations of landmarks that showed high reliability in each condition in terms of head posture and image resolution.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

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

Alkhayer

Becsei

Pa̋rkányi

et al. 2021

IJERPH

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Further advantages include short scan time, portability, ease of operation, and reasonable cost [ 16 ]. Jung et al found that the accuracy of structured light systems compares to that of direct anthropometric measurements and concluded that it is a reliable approach for a facial soft tissue assessment [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

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

Alkhayer

Becsei

Pa̋rkányi

et al. 2021

IJERPH

View full text Add to dashboard Cite

show abstract

“…3D CT images were commonly used to analyze facial soft tissue changes after surgery [28, 29]; Jeon et al [12] analyzed the perioral lip landmarks on three-dimensional image from cone-beam computed tomography taken before and 6 months after the operation. 3D facial soft tissue scan images before and after surgery have been also used to evaluate postoperative changes of soft tissue [30, 31]. Jung et al [30] investigated the 3D changes in the 26 landmarks, and the relative ratio of the soft tissue movement to the bony movement was evaluated with CBCT and 3D facial scan images.…”

Section: Discussionmentioning

confidence: 99%

“…3D facial soft tissue scan images before and after surgery have been also used to evaluate postoperative changes of soft tissue [30, 31]. Jung et al [30] investigated the 3D changes in the 26 landmarks, and the relative ratio of the soft tissue movement to the bony movement was evaluated with CBCT and 3D facial scan images. However, those studies focused on analyzing the changes of facial soft tissue in the anterior-posterior direction.…”

Section: Discussionmentioning

confidence: 99%

Horizontal change of philtrum after orthognathic surgery in patients with facial asymmetry

Joh

Park²,

Yang

et al. 2019

Maxillofac Plast Reconstr Surg

View full text Add to dashboard Cite

BackgroundSoft tissue asymmetry such as lip canting or deviation of the philtrum is an important influencing factor for unbalanced facial appearance. Lip canting could be improved by the correction of the occlusal canting or positional change of the mentum. Although there are many studies about changes of lip canting, however, postoperative changes of philtrum deviation have not been yet reported. In this study, we investigate the positional change of the philtrum after orthognathic surgery and influencing factors.MethodsPositional change of the philtrum was evaluated in 41 patients with facial asymmetry who underwent bimaxillary surgery, in relation to other anatomical soft tissue landmarks using a frontal clinical photo. The surgical movement of the maxillary and mandibular dental midline and canting were measured in postero-anterior cephalogram before and 1 day after surgery. The same procedure was repeated in patients with more than 1.5 mm perioperative change of the mandibular dental midline after bimaxillary surgery.ResultsMaxillary dental midline shifting and canting correction did not have a significant correlation with lateral movement of the philtrum midline. However, the mandibular shift had a statistically significant correlation with a lateral movement of the philtrum (p < 0.05) as well as other linear parameters and angle values.ConclusionThe horizontal change of the philtrum is influenced by lateral mandibular movement in patients with facial asymmetry, rather than maxillary lateral movement.

show abstract

“…The study was approved by the Ethics Committee of Peking University School and Hospital of Stomatology (PKUSSIRB-201948110). The sample size of this preliminary study was determined according to historical studies (Solem RC et al [11]: 24 subjects; Jung J et al [12]: 32 subjects; Li H et al [13]: 50 subjects).…”

Section: Subjectsmentioning

confidence: 99%

Measurement of three-dimensional changes in lip vermilion in adult female patients after orthodontic extraction: a preliminary study

Shen

Xie

Jiang

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: 3D facial scanning has changed the way facial aesthetic is evaluated and has numerous advantages for facial analysis. The specific relationship between lip vermilion morphological changes after orthodontic extraction treatment has not been fully explained. The objective of this study was to evaluate 3D morphological changes after orthodontic extraction treatment in lip vermilion of adult females with dentoalveolar protrusion using a structured light-based scanner. Methods: Forty-two female subjects (25.2 ± 1.9 years) were recruited as the treatment group; these patients had undergone extraction treatment and achieved better sagittal profiles. Twenty female subjects (25.5 ± 2.1 years) were enrolled in the non-treatment group; these patients did not require any orthodontic treatment. The follow up time for the treatment group was more than 24 months and for the non-treatment group was more than 12 months. 3D facial scans were captured using 3D CaMega. Six landmarks (Ls, Li, R.Chp, L.Chp, R.Ch, and L.Ch), three linear measurements (mouth height, philtrum width, and mouth width), and three area measurements (upper, lower, and total vermilion area) were measured. The spatial deviations of the three volumetric measurements (upper, lower, and total vermilion) were constructed for quantitative analysis. Superimposed colour maps and spectra were constructed for visual analysis of morphological changes as a qualitative evaluation. Results: Mouth height and philtrum width decreased (-0.93mm and -1.08mm, respectively) significantly (p=0.008 and p=0.027, respectively), and no significant (p=0.488) change in mouth width was observed in the treatment group. The lower and total vermilion surface areas decreased (-51.00mm2 and -69.82mm2 , respectively) significantly (p=0.003 and p=0.031, respectively) in the treatment group, but the upper vermilion remained unchanged (p=0.752). In the treatment group, significant retractions were observed in the superimposed colour maps and spectra, and the volumetric measurements of the vermilion changed significantly (p=0.012, p=0.001 and p=0.004, respectively). Significant differences were found between the treatment group and the non-treatment group in linear, area and volumetric measurements. Conclusions: This study established a method for qualitative and quantitative evaluation of the lip vermilion. Significant 3D retraction of the lip vermilion after the extraction treatment was found, with morphological variation between upper and lower vermilion.

show abstract

Three dimensional evaluation of soft tissue after orthognathic surgery

Cited by 50 publications

References 31 publications

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

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

Horizontal change of philtrum after orthognathic surgery in patients with facial asymmetry

Measurement of three-dimensional changes in lip vermilion in adult female patients after orthodontic extraction: a preliminary study

Contact Info

Product

Resources

About