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https://www.readbyqxmd.com/read/28203510/midface-osteotomies-for-feminization-of-the-facial-skeleton
#1
T Kalle Lundgren, Filip Farnebo
Facial feminization surgery is a term to describe the surgical alteration of a masculine facial appearance to a more feminine appearance, which is most commonly performed for male-to-female transsexual individuals. To alter the midfacial relations, segmentalized osteotomies were performed in selected patients expanding on the established techniques for facial feminization surgery. All patients underwent a preoperative 3D computerized tomography scan and 3D photography before and after the surgery. The inclusion of the midface in surgery was determined based on the relative projection and angle of the zygomatic body compared with the supraorbital region (the supraorbital region was reduced in all patients)...
January 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28203007/-diagnossis-and-treatment-of-complicated-anterior-teeth-esthetic-defects-by-combination-of-whole-process-digital-esthetic-rehabilitation-with-periodontic-surgery
#2
Z Li, Y S Liu, H Q Ye, Y S Liu, W J Hu, Y S Zhou
OBJECTIVE: To explore a new method of whole-process digital esthetic prosthodontic rehabilitation combined with periodontic surgery for complicated anterior teeth esthetic defects accompanied by soft tissue morphology, to provide an alternative choice for solving this problem under the guidance of three-dimensional (3D) printing digital dental model and surgical guide, thus completing periodontic surgery and digital esthetic rehabilitation of anterior teeth. METHODS: In this study, 12 patients with complicated esthetic problems accompanied by soft tissue morphology in their anterior teeth were included...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28011182/dynamic-facial-asymmetry-in-patients-with-repaired-cleft-lip-using-4d-imaging-video-stereophotogrammetry
#3
Rami R Hallac, Jennifer Feng, Alex A Kane, James R Seaward
BACKGROUND: Unilateral cleft lip is a profoundly asymmetrical condition affecting all hard and soft tissue layers from the nose to the upper lip. Although the asymmetry is minimized through cleft lip repair, a degree of asymmetry inevitably persists. Studies investigating asymmetry in patients with cleft lip have used facial measurements, and static 2D and 3D photography. The nose/lip/mouth area, however, is rarely static in our day to day social interactions. METHODS: Non-syndromic patients with cleft lip and palate, and a control group without orofacial clefts underwent 50 frames per second 4D imaging while generating facial expressions including smiling and pouting...
January 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28005766/three-dimensional-handheld-scanning-to-quantify-head-shape-changes-in-spring-assisted-surgery-for-sagittal-craniosynostosis
#4
Maik Tenhagen, Jan L Bruse, Naiara Rodriguez-Florez, Freida Angullia, Alessandro Borghi, Maarten J Koudstaal, Silvia Schievano, Owase Jeelani, David Dunaway
Three-dimensional (3D) imaging is an important tool for diagnostics, surgical planning, and evaluation of surgical outcomes in craniofacial procedures. Gold standard for acquiring 3D imaging is computed tomography that entails ionizing radiations and, in young children, a general anaesthesia. Three-dimensional photographic imaging is an alternative method to assess patients who have undergone calvarial reconstructive surgery. The aim of this study was to assess the utility of 3D handheld scanning photography in a cohort of patients who underwent spring-assisted correction surgery for scaphocephaly...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27992234/using-dental-gps-to-navigate-implant-placement
#5
Byran T Harris, William C Scarfe, Daniel R Llop, Wei-Shao Lin
Digital advances have changed implant planning to improve outcomes in placement and restoration. Layering multiple image inputs, such as volumetric radiology, photography, and 3-dimensional (3D) surface scans, has allowed better assessment of patients with partial or complete edentulism, and this can aid in producing 3D visual predictions, implant guides, and prosthetics to execute the proposed plan.
September 2016: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/27965978/rebamipide-an-amino-acid-analog-of-2-1h-quinolinone-inhibits-the-formation-of-human-osteoclasts
#6
Yuki Nanke, Tsuyoshi Kobashigawa, Toru Yago, Manabu Kawamoto, Hisashi Yamanaka, Shigeru Kotake
Objectives. Drug repositioning or drug reprofiling (DR) has recently been growing in importance. DR has a significant advantage over traditional drug development because the repositioned drug has already passed toxicity tests; its safety is known, and the risk of adverse toxicology is reduced. In the current study, we investigated the role of rebamipide, a mucosa-protecting agent, with recently reported anti-inflammatory function, in human osteoclastogenesis. Methods. Peripheral blood mononuclear cells (PBMCs) were cultured in the presence of M-CSF and sRANKL...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27965487/accuracy-of-three-shade-matching-devices-in-replicating-the-shade-of-metal-ceramic-restorations-an-in-vitro-study
#7
Shruti Lakhanpal, Menon S Neelima
INTRODUCTION: In restorative dentistry, the clinician commonly encounters the challenge of replicating the color of natural teeth due to the subjectivity of perceptual evaluation. Recent advances in photography and computing have resulted in the widespread use of the digital camera for color imaging. These instruments can be used effectively for shade matching and communication to yield predictable results. MATERIALS AND METHODS: The study sample consisted of 20 freshly extracted noncarious premolars...
December 1, 2016: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/27913880/forensic-3d-documentation-of-skin-injuries
#8
Chiara Villa
An accurate and precise documentation of injuries is fundamental in a forensic pathological context. Photographs and manual measurements are taken of all injuries during autopsies, but ordinary photography projects a 3D wound on a 2D space. Using technologies such as photogrammetry, it is possible to create 3D detailed, to-scale, true-color documentation of skin injuries from 2D pictures. A comparison between the measurements of 165 lesions taken during autopsies and on photogrammetrically processed pictures was performed...
December 2, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27906262/light-field-and-holographic-three-dimensional-displays-invited
#9
Masahiro Yamaguchi
A perfect three-dimensional (3D) display that satisfies all depth cues in human vision is possible if a light field can be reproduced exactly as it appeared when it emerged from a real object. The light field can be generated based on either light ray or wavefront reconstruction, with the latter known as holography. This paper first provides an overview of the advances of ray-based and wavefront-based 3D display technologies, including integral photography and holography, and the integration of those technologies with digital information systems...
December 1, 2016: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/27893632/the-evolution-of-photography-and-three-dimensional-imaging-in-plastic-surgery
#10
Jason M Weissler, Carrie S Stern, Jillian Schreiber, Bardia Amirlak, Oren M Tepper
Throughout history, the technological advancements of conventional clinical photography in plastic surgery have refined not only the plastic surgeon's armamentarium, but have invigorated the profession through technology. The technology of the once traditional two-dimensional photograph has since been revolutionized and refashioned to incorporate novel applications, which have since become the standard in clinical photography.Contrary to traditional standardized two-dimensional photographs, three-dimensional photography provides the surgeon with an invaluable volumetric and morphological analysis by demonstrating true surface dimensions both pre and postoperatively...
November 21, 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27812721/assessment-of-facial-soft-tissue-profiles-based-on-lateral-photographs-versus-three-dimensional-face-scans
#11
Martin Fink, Ursula Hirschfelder, Veronika Hirschinger, Matthias Schmid, Caroline Spitzl, Andreas Detterbeck, Elisabeth Hofmann
OBJECTIVES: The purpose of this study was to compare two-dimensional (2D) lateral photographs versus three-dimensional (3D) face scans in analyzing facial profiles using Schwarz's concept of the jaw profile field (JPF) in its original 2D and in a modified 3D version. In addition, the distribution of the facial profile types described by Schwarz were examined. MATERIALS AND METHODS: Of 75 adult volunteers recruited specifically for this study, we obtained both photographs (Nikon D 300S; Nikon, Düsseldorf, Germany) and scans (FaceSCAN(3D) Scientific Photolab 60 Hz; 3D-Shape, Erlangen, Germany) in a standardized setting...
January 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/27681360/targeting-of-sebaceous-glands-to-treat-acne-by-micro-insulated-needles-with-radio-frequency-in-a-rabbit-ear-model
#12
Tae-Rin Kwon, Eun Ja Choi, Chang Taek Oh, Dong-Ho Bak, Song-I Im, Eun Jung Ko, Hyuck Ki Hong, Yeon Shik Choi, Joon Seok, Sun Young Choi, Gun Young Ahn, Beom Joon Kim
BACKGROUND AND OBJECTIVES: Many studies have investigated the application of micro-insulated needles with radio frequency (RF) to treat acne in humans; however, the use of a micro-insulated needle RF applicator has not yet been studied in an animal model. The purpose of this study was to evaluate the effectiveness of a micro-insulated needle RF applicator in a rabbit ear acne (REA) model. STUDY DESIGN/MATERIALS AND METHODS: In this study, we investigated the effect of selectively destroying the sebaceous glands using a micro-insulated needle RF applicator on the formation of comedones induced by application of 50% oleic acid and intradermal injection of P...
September 29, 2016: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/27673748/immediate-implant-placement-of-a-single-central-incisor-using-a-cad-cam-crown-root-form-technique-provisional-to-final-restoration
#13
Dean Vafiadis, Gary Goldstein, David Garber, Anthony Lambrakos, Bj Kowalski
OBJECTIVE: Preserving soft and hard tissues after extraction and implant placement is crucial for anterior esthetics. This technique will show how the information gathered from a cone-beam computed tomography (CBCT) scan of the maxillary left central incisor and an intra-oral digital impression can be merged to fabricate a CAD/CAM crown-root matrix to be used as an immediate provisional restoration that mimics the natural anatomy. CLINICAL CONSIDERATIONS: Due to trauma, a left central incisor appeared to be fractured and was scheduled for extraction and implant placement...
September 27, 2016: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/27661605/full-field-3d-deformation-measurement-comparison-between-speckle-phase-and-displacement-evaluation
#14
Davood Khodadad, Alok Kumar Singh, Giancarlo Pedrini, Mikael Sjödahl
The objective of this paper is to describe a full-field deformation measurement method based on 3D speckle displacements. The deformation is evaluated from the slope of the speckle displacement function that connects the different reconstruction planes. For our experiment, a symmetrical arrangement with four illuminations parallel to the planes (x,z) and (y,z) was used. Four sets of speckle patterns were sequentially recorded by illuminating an object from the four directions, respectively. A single camera is used to record the holograms before and after deformations...
September 20, 2016: Applied Optics
https://www.readbyqxmd.com/read/27649099/application-of-multi-resolution-3d-techniques-in-crime-scene-documentation-with-bloodstain-pattern-analysis
#15
Elwira Hołowko, Kamil Januszkiewicz, Paweł Bolewicki, Robert Sitnik, Jakub Michoński
In forensic documentation with bloodstain pattern analysis (BPA) it is highly desirable to obtain non-invasively overall documentation of a crime scene, but also register in high resolution single evidence objects, like bloodstains. In this study, we propose a hierarchical 3D scanning platform designed according to the top-down approach known from the traditional forensic photography. The overall 3D model of a scene is obtained via integration of laser scans registered from different positions. Some parts of a scene being particularly interesting are documented using midrange scanner, and the smallest details are added in the highest resolution as close-up scans...
October 2016: Forensic Science International
https://www.readbyqxmd.com/read/27618041/color-change-of-phenol-red-by-integrated-smart-phone-camera-as-a-tool-for-the-determination-of-neurotoxic-compounds
#16
Adam Kostelnik, Alexander Cegan, Miroslav Pohanka
The use of a cell phone as a detection system is easy, simple and does not require trained personnel, which is in contrast to standard laboratory instruments. This paper deals with immobilization of acetylcholinesterase (AChE) in a gelatin matrix, and phenol red, as an indicator of AChE activity, is used in order to establish a method that is easily compatible with a camera device. AChE splits acetylcholine into choline and acetic acid, which changes the pH of a medium, resulting in a phenol red color change...
September 7, 2016: Sensors
https://www.readbyqxmd.com/read/27534487/comparison-of-three-dimensional-particle-tracking-and-sizing-using-plenoptic-imaging-and-digital-in-line-holography
#17
Elise M Hall, Brian S Thurow, Daniel R Guildenbecher
Digital in-line holography (DIH) and plenoptic photography are two techniques for single-shot, volumetric measurement of 3D particle fields. Here we present a comparison of the two methods by applying plenoptic imaging to experimental configurations that have been previously investigated with DIH. These experiments include the tracking of secondary droplets from the impact of a water drop on a thin film of water and tracking of pellets from a shotgun. Both plenoptic imaging and DIH successfully quantify the 3D nature of these particle fields...
August 10, 2016: Applied Optics
https://www.readbyqxmd.com/read/27521723/registering-imaged-ecog-electrodes-to-human-cortex-a-geometry-based-technique
#18
David Brang, Zhongtian Dai, Weili Zheng, Vernon L Towle
BACKGROUND: The accurate localization of implanted ECoG electrodes over the brain is of critical importance to invasive diagnostic work-up for the surgical treatment of intractable epileptic seizures. The implantation of subdural electrodes is an invasive procedure which typically introduces non-uniform deformations of a subject's brain, increasing the difficulty of determining the precise location of the electrodes vis-à-vis cortex. Formalization of this problem is used to define a novel solution for the optimal localization of subdural electrodes...
November 1, 2016: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/27479971/gaussian-light-field-estimation-of-viewpoint-dependent-blur-for-optical-see-through-head-mounted-displays
#19
Yuta Itoh, Toshiyuki Amano, Daisuke Iwai, Gudrun Klinker
We propose a method to calibrate viewpoint-dependent, channel-wise image blur of near-eye displays, especially of Optical See-Through Head-Mounted Displays (OST-HMDs). Imperfections in HMD optics cause channel-wise image shift and blur that degrade the image quality of the display at a user's viewpoint. If we can estimate such characteristics perfectly, we could mitigate the effect by applying correction techniques from the computational photography in computer vision as analogous to cameras. Unfortunately, directly applying existing calibration techniques of cameras to OST-HMDs is not a straightforward task...
November 2016: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/27314348/estimating-3d-leaf-and-stem-shape-of-nursery-paprika-plants-by-a-novel-multi-camera-photography-system
#20
Yu Zhang, Poching Teng, Yo Shimizu, Fumiki Hosoi, Kenji Omasa
For plant breeding and growth monitoring, accurate measurements of plant structure parameters are very crucial. We have, therefore, developed a high efficiency Multi-Camera Photography (MCP) system combining Multi-View Stereovision (MVS) with the Structure from Motion (SfM) algorithm. In this paper, we measured six variables of nursery paprika plants and investigated the accuracy of 3D models reconstructed from photos taken by four lens types at four different positions. The results demonstrated that error between the estimated and measured values was small, and the root-mean-square errors (RMSE) for leaf width/length and stem height/diameter were 1...
2016: Sensors
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