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https://www.readbyqxmd.com/read/28906337/a-three-dimensional-study-of-midfacial-changes-following-le-fort-ii-distraction-with-zygomatic-repositioning-in-syndromic-patients
#1
James M Smartt, Carey Campbell, Rami Hallac, Jake Alford, Christopher A Derderian
Le Fort II distraction with zygomatic repositioning introduced the ability to restore central midfacial height and convexity independent of changes in orbital morphology. This study analyzes midfacial and orbital morphology before and after Le Fort II distraction with zygomatic repositioning.All patients who underwent Le Fort II Distraction with zygomatic repositioning between 2013 and 2015 were included. Two- and 3-dimensional measurements were made using 3dMD Vultus software to assess canthal tilt, nasolabial angle, ratio of midfacial to lower facial height, and absolute change in nasal length...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28643910/evaluation-of-the-3dmdface-system-as-a-tool-for-soft-tissue-analysis
#2
C Hong, K Choi, Y Kachroo, T Kwon, A Nguyen, R McComb, W Moon
OBJECTIVES: To evaluate the accuracy of three-dimensional stereophotogrammetry by comparing values obtained from direct anthropometry and the 3dMDface system. To achieve a more comprehensive evaluation of the reliability of 3dMD, both linear and surface measurements were examined. SETTING AND SAMPLE POPULATION: UCLA Section of Orthodontics. Mannequin head as model for anthropometric measurements. MATERIAL AND METHODS: Image acquisition and analysis were carried out on a mannequin head using 16 anthropometric landmarks and 21 measured parameters for linear and surface distances...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28195887/minimal-invasive-rhinoplasty-fat-injection-for-nasal-dorsum-contouring
#3
Susie Lin, Yen-Chang Hsiao, Jung-Ju Huang, Chun-Shin Chang, Philip Kuo-Ting Chen, Jyh-Ping Chen, Lun-Jou Lo, Yu-Ray Chen
PURPOSE: To determine the graft retention rate of fat injection rhinoplasty in the nasal dorsum region using 3dMD System. MATERIALS AND METHODS: Thirteen consecutive patients (12 women and 1 man) treated by the corresponding author (F.C.S.C.) between April of 2014 and December of 2015 for autologous fat injection rhinoplasty at the nasal dorsum region to improve facial esthetics were included in this study. Preoperative and postoperative 3-dimensional (3-D) photography images taken 3 months after fat injection rhinoplasty were superimposed at the level of forehead to measure the volume changes at the nasal dorsum region...
March 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28161205/comparison-of-three-dimensional-scanner-systems-for-craniomaxillofacial-imaging
#4
COMPARATIVE STUDY
Paul G M Knoops, Caroline A A Beaumont, Alessandro Borghi, Naiara Rodriguez-Florez, Richard W F Breakey, William Rodgers, Freida Angullia, N U Owase Jeelani, Silvia Schievano, David J Dunaway
Two-dimensional photographs are the standard for assessing craniofacial surgery clinical outcomes despite lacking three-dimensional (3D) depth and shape. Therefore, 3D scanners have been gaining popularity in various fields of plastic and reconstructive surgery, including craniomaxillofacial surgery. Head shapes of eight adult volunteers were acquired using four 3D scanners: 1.5T Avanto MRI, Siemens; 3dMDface System, 3dMD Inc.; M4D Scan, Rodin4D; and Structure Sensor, Occipital Inc. Accuracy was evaluated as percentage of data within a range of 2 mm from the 3DMDface System reconstruction, by surface-to-surface root mean square (RMS) distances, and with facial distance maps...
April 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28056044/three-dimensional-accuracy-of-facial-scan-for-facial-deformities-in-clinics-a-new-evaluation-method-for-facial-scanner-accuracy
#5
Yi-Jiao Zhao, Yu-Xue Xiong, Yong Wang
In this study, the practical accuracy (PA) of optical facial scanners for facial deformity patients in oral clinic was evaluated. Ten patients with a variety of facial deformities from oral clinical were included in the study. For each patient, a three-dimensional (3D) face model was acquired, via a high-accuracy industrial "line-laser" scanner (Faro), as the reference model and two test models were obtained, via a "stereophotography" (3dMD) and a "structured light" facial scanner (FaceScan) separately. Registration based on the iterative closest point (ICP) algorithm was executed to overlap the test models to reference models, and "3D error" as a new measurement indicator calculated by reverse engineering software (Geomagic Studio) was used to evaluate the 3D global and partial (upper, middle, and lower parts of face) PA of each facial scanner...
2017: PloS One
https://www.readbyqxmd.com/read/27719703/-evaluation-of-therapeutic-effect-of-virtual-design-for-correcting-facial-asymmetry-of-skeletal-class-%C3%A2-deformity
#6
K Y Tian, Q Q Li, X J Liu, X X Wang, Z L Li, X Wang
Objective: To establish a computer-aided surgical simulation procedure based on the natural head position(NHP) for orthognathic surgery and to access the effect for correcting facial asymmetry for skeletal Class Ⅲ deformity. Methods: Thirty-five patients(male: 14 and female: 21, mean age: [21.5±2.3] years) of skeletal Class Ⅲ deformity with facial asymmetry were included and divided into virtual group (16 patients) and control group(19 patients). The computer-aided surgical simulation procedure was used in the virtual group and the intermediate and final splints were fabricated using the rapid protyping technique...
October 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/27457369/evaluation-of-the-effects-of-the-low-level-laser-therapy-on-swelling-pain-and-trismus-after-removal-of-impacted-lower-third-molar
#7
Hilal Alan, Ümit Yolcu, Mahmut Koparal, Cem Özgür, Seyit Ahmet Öztürk, Sıddık Malkoç
BACKGROUND: In current study we aimed to examine the effect of a low-level laser therapy on the pain, mouth opening and swelling of patients whose impacted 3rd molar tooth was extracted in addition measurement volumetrically to the edema with 3dMD face system. METHODS: It was surveyed 15 patients who had bilateral symmetric lower 3rd molars. Surgical sides of patients were randomly separated into two groups: the study group and the control group. It was applied extra oral low-level laser therapy (LLLT, 0...
July 26, 2016: Head & Face Medicine
https://www.readbyqxmd.com/read/27438454/orbital-reconstruction-patient-specific-orbital-floor-reconstruction-using-a-mirroring-technique-and-a-customized-titanium-mesh
#8
Achille Tarsitano, Giovanni Badiali, Angelo Pizzigallo, Claudio Marchetti
OBJECTIVE: Enophthalmos is a severe complication of primary reconstruction of orbital floor fractures. The goal of secondary reconstruction procedures is to restore symmetrical globe positions to recover function and aesthetics. The authors propose a new method of orbital floor reconstruction using a mirroring technique and a customized titanium mesh, printed using a direct metal laser-sintering method. METHODS: This reconstructive protocol involves 4 steps: mirroring of the healthy orbit at the affected site, virtual design of a patient-specific orbital floor mesh, CAM procedures for direct laser-sintering of the customized titanium mesh, and surgical insertion of the device...
October 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27131258/reproducibility-of-the-lip-position-at-rest-a-3-dimensional-perspective
#9
Furkan Dindaroğlu, Gökhan Serhat Duran, Serkan Görgülü
INTRODUCTION: In this study, we evaluated the reproducibility of the lip position at rest in 3 dimensions using reverse engineering software and stereophotogrammetric images. METHODS: We used 3dMD Flex (3dMD, Atlanta, Ga) to obtain 60 stereophotogrammetric images from the same participant. Thirty images were obtained in 3 sessions on the same day, and the procedure was repeated 6 weeks later for 30 more images. The surface-base registration, the segmentation of the upper and lower lips, and the 3-dimensional deviation analysis were performed with Geomagic Control (3D Systems, Rock Hill, SC) software...
May 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/26928458/validity-and-repeatability-of-a-depth-camera-based-surface-imaging-system-for-thigh-volume-measurement
#10
Alice M Bullas, Simon Choppin, Ben Heller, Jon Wheat
Complex anthropometrics such as area and volume, can identify changes in body size and shape that are not detectable with traditional anthropometrics of lengths, breadths, skinfolds and girths. However, taking these complex with manual techniques (tape measurement and water displacement) is often unsuitable. Three-dimensional (3D) surface imaging systems are quick and accurate alternatives to manual techniques but their use is restricted by cost, complexity and limited access. We have developed a novel low-cost, accessible and portable 3D surface imaging system based on consumer depth cameras...
October 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/26581658/multidimensional-esthetic-evaluation-of-patients-with-a-cleft-lip-and-palate-wearing-a-maxillary-partial-removable-dental-prosthesis-a-5-year-retrospective-study
#11
Dedong Yu, Guofang Xing, Ping Nie, Xiuyin Zhang, Guofang Steve Shen
STATEMENT OF PROBLEM: No published quantitative or qualitative studies are available of the 2-dimensional (2D) and 3D esthetic evaluation of patients with a cleft lip and palate (CLP) wearing a maxillary partial removable dental prosthesis (MPRDP). PURPOSE: The purpose of this retrospective clinical study was to qualitatively and quantitatively evaluate the facial esthetic improvements of patients with CLP wearing an MPRDP for 5 years by using 2D cephalometric and 3D photogrammetry methods...
April 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/26421470/the-3dmd-photogrammetric-photo-system-in-cranio-maxillofacial-surgery-validation-of-interexaminer-variations-and-perceptions
#12
Fredrik Nord, Ruth Ferjencik, Burkhardt Seifert, Martin Lanzer, Thomas Gander, Felix Matthews, Martin Rücker, Heinz-Theo Lübbers
BACKGROUND: Three-dimensional photography of the face is increasingly used to overcome the downsides of conventional photography or anthropometry regarding reliable evaluation. However, the precision of such a system has to be validated before it can be implemented for clinical use. MATERIAL AND METHODS: Eight people were photographed with the 3dMDface system using lighting from sets of 2 × 4 compact fluorescent lights in a clinical photography room without natural light sources...
November 2015: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/26381118/effects-of-different-rapid-maxillary-expansion-appliances-on-facial-soft-tissues-using-three-dimensional-imaging
#13
Sedat Altındiş, Ebubekir Toy, Faruk Ayhan Başçiftçi
OBJECTIVE: To determine three-dimensional (3D) effects of three different rapid maxillary expansion (RME) appliances on facial soft tissues. MATERIALS AND METHODS: Forty-two children (18 boys, 24 girls) who required RME treatment were included in this study. Patients were randomly divided into three equal groups: banded RME, acrylic splint RME, and modified acrylic splint RME. For each patient, 3D images were obtained before treatment (T1) and at the end of the 3-month retention (T2) with the 3dMD system...
July 2016: Angle Orthodontist
https://www.readbyqxmd.com/read/26381058/comparative-accuracy-of-facial-models-fabricated-using-traditional-and-3d-imaging-techniques
#14
Ketu P Lincoln, Albert Y T Sun, Thomas J Prihoda, Alan J Sutton
PURPOSE: The purpose of this investigation was to compare the accuracy of facial models fabricated using facial moulage impression methods to the three-dimensional printed (3DP) fabrication methods using soft tissue images obtained from cone beam computed tomography (CBCT) and 3D stereophotogrammetry (3D-SPG) scans. MATERIALS AND METHODS: A reference phantom model was fabricated using a 3D-SPG image of a human control form with ten fiducial markers placed on common anthropometric landmarks...
April 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/26267357/accuracy-and-reliability-of-3d-stereophotogrammetry-a-comparison-to-direct-anthropometry-and-2d-photogrammetry
#15
Furkan Dindaroğlu, Pınar Kutlu, Gökhan Serhat Duran, Serkan Görgülü, Erhan Aslan
OBJECTIVE: To evaluate the accuracy of three-dimensional (3D) stereophotogrammetry by comparing it with the direct anthropometry and digital photogrammetry methods. The reliability of 3D stereophotogrammetry was also examined. MATERIALS AND METHODS: Six profile and four frontal parameters were directly measured on the faces of 80 participants. The same measurements were repeated using two-dimensional (2D) photogrammetry and 3D stereophotogrammetry (3dMDflex System, 3dMD, Atlanta, Ga) to obtain images of the subjects...
May 2016: Angle Orthodontist
https://www.readbyqxmd.com/read/26247104/social-smile-reproducibility-using-3-d-stereophotogrammetry-and-reverse-engineering-technology
#16
Furkan Dindaroğlu, Gökhan Serhat Duran, Serkan Görgülü, Enver Yetkiner
OBJECTIVE: To assess the range of social smile reproducibility using 3-D stereophotogrammetry and reverse engineering technology. MATERIALS AND METHODS: Social smile images of white adolescents (N  =  15, mean age  =  15.4 ±1.5 years; range  =  14-17 years) were obtained using 3dMDFlex (3dMD, Atlanta, Ga). Each participant was asked to produce 16 social smiles at 3-minute intervals. All images were obtained in natural head position. Alignment of images, segmentation of smile area, and 3-D deviation analysis were carried out using Geomagic Control software (3D Systems Inc, Cary, NC)...
May 2016: Angle Orthodontist
https://www.readbyqxmd.com/read/26133934/quantitative-analysis-of-3-dimensional-facial-soft-tissue-photographic-images-technical-methods-and-clinical-application
#17
Vikrum Nanda, Boris Gutman, Ehab Bar, Suha Alghamdi, Sotirios Tetradis, Aldons J Lusis, Eleazar Eskin, Won Moon
BACKGROUND: The recent advent of 3D photography has created the potential for comprehensive facial evaluation. However, lack of practical true 3D analysis of the information collected from 3D images has been the factor limiting widespread utilization in orthodontics. Current evaluation of 3D facial soft tissue images relies on subjective visual evaluation and 2D distances to assess facial disharmony. The objectives of this project strive to map the surface and define boundaries of 3D facial soft tissue, modify mathematical functions to average multiple 3D facial images, and mathematically average 3D facial images allowing generation of color-coded surface deviation relative to a true average...
2015: Progress in Orthodontics
https://www.readbyqxmd.com/read/26125616/automatic-detection-and-reproduction-of-natural-head-position-in-stereo-photogrammetry
#18
Tai-Chiu Hsung, John Lo, Tik-Shun Li, Lim-Kwong Cheung
UNLABELLED: The aim of this study was to develop an automatic orientation calibration and reproduction method for recording the natural head position (NHP) in stereo-photogrammetry (SP). A board was used as the physical reference carrier for true verticals and NHP alignment mirror orientation. Orientation axes were detected and saved from the digital mesh model of the board. They were used for correcting the pitch, roll and yaw angles of the subsequent captures of patients' facial surfaces, which were obtained without any markings or sensors attached onto the patient...
2015: PloS One
https://www.readbyqxmd.com/read/25976036/reducing-cone-beam-ct-scan-height-as-a-method-of-radiation-reduction-for-photorealistic-three-dimensional-orthognathic-planning
#19
Cze-Yin Lin, Tai-Chiu Hsung, Balvinder Khambay
OBJECTIVES: To determine the superimposition accuracy of full-face stereophotographic images with 22 cm and 13 cm cone beam computed tomography (CBCT) scans. MATERIAL AND METHODS: 22 cm CBCT scans and corresponding stereophotographic images (3 dMD) for 30 subjects requiring orthognathic surgery were randomly selected. A 13 cm CBCT scan was generated from the 22 cm scan for each subject. All scans and images were converted into STL format. For each subject, the 22 cm and 13 cm CBCT scans were imported into CAD/CAM software and each superimposed with the corresponding 3 dMD image...
July 2015: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/25892285/precision-of-three-dimensional-stereo-photogrammetry-3dmd%C3%A2-in-anthropometry-of-the-auricle-and-its-application-in-microtia-reconstruction
#20
COMPARATIVE STUDY
Zung-Chung Chen, Mohammad Nayef Albdour, Jesus Ablaza Lizardo, Ying-An Chen, Philip Kuo-Ting Chen
BACKGROUND: The advent of three-dimensional stereo-photogrammetry in recent years has vastly helped the craniomaxillofacial field improve in terms of preoperative and intraoperative decision making. With regard to the auricle though, there is paucity of research as to the application of this promising technology. METHODS: A total of 20 normal adult ears were included in this study. Thirteen anthropometric measurements were taken, twice by two plastic surgeons using direct measurement (DM) and through images captured via 3dMD™...
May 2015: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
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