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https://www.readbyqxmd.com/read/27719703/-evaluation-of-therapeutic-effect-of-virtual-design-for-correcting-facial-asymmetry-of-skeletal-class-%C3%A2-deformity
#1
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
#2
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...
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
https://www.readbyqxmd.com/read/25869010/comparing-facial-3d-analysis-with-dna-testing-to-determine-zygosities-of-twins
#16
COMPARATIVE STUDY
Ville Vuollo, Mantas Sidlauskas, Antanas Sidlauskas, Virpi Harila, Loreta Salomskiene, Alexei Zhurov, Lasse Holmström, Pertti Pirttiniemi, Tuomo Heikkinen
The aim of this study was to compare facial 3D analysis to DNA testing in twin zygosity determinations. Facial 3D images of 106 pairs of young adult Lithuanian twins were taken with a stereophotogrammetric device (3dMD, Atlanta, Georgia) and zygosity was determined according to similarity of facial form. Statistical pattern recognition methodology was used for classification. The results showed that in 75% to 90% of the cases, zygosity determinations were similar to DNA-based results. There were 81 different classification scenarios, including 3 groups, 3 features, 3 different scaling methods, and 3 threshold levels...
June 2015: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/25686338/-comparison-of-three-surgical-techniques-for-controlling-nasal-width-after-le-fort-i-osteotomy
#17
RANDOMIZED CONTROLLED TRIAL
Zong-qi Wang, Xiao-xia Wang, Zi-li Li, Biao Yi, Cheng Liang, Xin Wang
OBJECTIVE: To identify nasal width changes occurring after Le Fort I osteotomy and to compare prospectively the effect of three surgical techniques for controlling postoperative nasal width. METHODS: In the study, 79 patients (22 male and 57 female, mean age 23.2 ± 3.4 years), who received Le Fort I osteotomy at Peking University Hospital of Stomatology from 2011 to 2014, were randomly divided into three groups. Group 1 was treated with traditional intraoral alar base cinch suture (ABCS); Group 2 with extraoral ABCS, and Group 3 with traditional ABCS plus an extra intraoral suture at points G...
February 18, 2015: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/25432431/accuracy-of-three-dimensional-soft-tissue-predictions-in-orthognathic-surgery-after-le-fort-i-advancement-osteotomies
#18
COMPARATIVE STUDY
R Ullah, P J Turner, B S Khambay
Prediction of postoperative facial appearance after orthognathic surgery can be used for communication, managing patients' expectations,avoiding postoperative dissatisfaction and exploring different treatment options. We have assessed the accuracy of 3dMD Vultus in predicting the final 3-dimensional soft tissue facial morphology after Le Fort I advancement osteotomy. We retrospectively studied 13 patients who were treated with a Le Fort I advancement osteotomy alone. We used routine cone-beam computed tomographic (CT) images taken immediately before and a minimum of 6 months after operation, and 3dMD Vultus to virtually reposition the preoperative maxilla and mandible in their post operative positions to generate a prediction of what the soft tissue would look like...
February 2015: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/25219776/reliability-and-validity-of-measurements-of-facial-swelling-with-a-stereophotogrammetry-optical-three-dimensional-scanner
#19
Wicher J van der Meer, Pieter U Dijkstra, Anita Visser, Arjan Vissink, Yijin Ren
Volume changes in facial morphology can be assessed using the 3dMD DSP400 stereo-optical 3-dimensional scanner, which uses visible light and has a short scanning time. Its reliability and validity have not to our knowledge been investigated for the assessment of facial swelling. Our aim therefore was to assess them for measuring changes in facial contour, in vivo and in vitro. Twenty-four healthy volunteers with and without an artificial swelling of the cheek were scanned, twice in the morning and twice in the afternoon (in vivo measurements)...
December 2014: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/24722813/lower-lateral-cartilage-repositioning-objective-analysis-using-3-dimensional-imaging
#20
Anthony Bared, Ali Rashan, Benjamin P Caughlin, Dean M Toriumi
IMPORTANCE: In recent years, with the advent of 3-dimensional (3D) imaging techniques, it has become possible to objectively measure rhinoplasty results. However, few studies have used 3D imaging software to assess postoperative rhinoplasty results of the nasal tip. OBJECTIVE: To analyze nasal tip volumes of patients with bulbous tips and measure postoperative nasal tip volume changes in patients who have undergone lower lateral cartilage (LLC) repositioning. DESIGN, SETTING, AND PARTICIPANTS: A prospective study of patients with a preoperative diagnosis of bulbous nasal tip and cephalically oriented LLC as measured intraoperatively (with angles less than 30 degrees from the midline) who underwent rhinoplasty by a single surgeon and preoperative and postoperative 3dMD imaging at a university hospital...
July 2014: JAMA Facial Plastic Surgery
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