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https://www.readbyqxmd.com/read/28735636/severe-distortion-of-an-orbital-titanium-mesh-implant-after-recurrent-facial-trauma-a-potential-threat-to-the-orbital-contents
#1
J M Foletti, P Scolozzi
Titanium mesh implants have proved their effectiveness in the reconstruction of fractures of the orbital wall, and their compromise between stiffness and elasticity allows for optimal support of the orbital contents. However, after recurrent orbital trauma, these implants (even when properly positioned) can become a potential "penetrating object" that threatens the critical adjacent anatomical structures. We report the case of a patient with recurrent facial trauma whose orbit had previously been reconstructed with a titanium implant, and which resulted in severe deformation...
July 20, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28730811/atomic-mechanism-of-hybridization-dependent-surface-reconstruction-with-tailored-functionality-in-hexagonal-multiferroics
#2
Shiqing Deng, Shaobo Cheng, Changsong Xu, Binghui Ge, Xuefeng Sun, Rong Yu, Wenhui Duan, Jing Zhu
The broken symmetry along with anomalous defect structures and charging conditions at multiferroics surface can alter both crystal structures and electronic configurations, bringing in emergent physical properties. Extraordinary surface states are induced into original mutually-coupled order parameters in such strongly correlated oxides, which flourish in diverse properties, however remain less explored. Here, we report the peculiar surface ferroelectric states and reconfigurable functionalities driven by the relaxation of surface and consequent changes in O-2p and Y-4d orbital (p-d) hybridization within a representative hexagonal multiferroics YMnO3...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28725521/naso-or-orbitocutaneous-fistulas-after-free-flap-reconstruction-of-orbital-exenteration-defects-retrospective-study-systematic-review-and-meta-analysis
#3
Patrick Tassone, Kurren S Gill, David Hsu, Gurston Nyquist, Howard Krein, Jurij R Bilyk, Anna P Murchison, James J Evans, Ryan N Heffelfinger, Joseph M Curry
Objective  Naso- or orbitocutaneous fistula (NOF) is a challenging complication of orbital exenteration, and it often requires surgical repair. We sought to identify the incidence and risk factors for NOF after orbital exenteration. Study Design  Retrospective chart review, systematic review, meta-analysis. Setting  Tertiary care center. Participants  Patients undergoing free flap reconstruction following orbital exenteration. Records were reviewed for clinicopathologic data, operative details, and outcomes...
August 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28694536/orbital-fractures-treated-in-auckland-from-2010-2015-review-of-patient-outcomes
#4
Lanit Anand, Christopher Sealey
AIM: The purpose of this study was to review patient outcomes from surgical reconstruction of isolated orbital fractures, performed by the Auckland District Health Board (ADHB) Oral and Maxillofacial Surgery service (OMFS), from 2010 to 2015. In particular, we wished to assess titanium as an orbital reconstructive material and compare outcomes with the international literature. METHOD: Hospital records for 103 adults (>18 years old) who underwent repair of isolated orbital fractures by the OMFS department at Middlemore Hospital, between 2010 and 2015, were reviewed...
July 7, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28692522/reconstructive-operation-of-nonsyndromic-multiple-suture-craniosynostosis-based-on-precise-virtual-plan-and-prefabricated-template
#5
Jian Ni, Bin Yang, Binghang Li
This report presents a case of a 4-year-old girl suffering from multiple-suture nonsyndromic craniosynostosis. The patient is characterized with fronto-orbital malformation and poor visual acuity. The preoperational three-dimensional computed tomography scan showed premature closure of the sagittal suture, bilateral coronal, and lambdoidal suture. The virtual surgical planning was performed before operation for the reposition of bone segments and communication with the patient's family. The navigational plate for reshaping was made based on the surgical plan with three-dimensional printed model...
July 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28691463/use-of-the-orbital-fat-pad-in-eyelid-reconstruction
#6
A Baj, O D Orto, M Romano, G A Beltramini, F J Silvestre, A B Giannì
Eyelid reconstruction, though challenging, can produce a functional, esthetically pleasing lid. This should preferably be accomplished with a one-stage procedure, using robust, well-vascularized tissues similar to those being replaced, with minimal associated donor morbidity. According to the experience with Bichat pedicled flap in oral reconstruction, the authors propose the use of pedicle infraorbital fat pad for repair of conjunctival defect. Seven patients underwent eyelid reconstruction of full-thickness oncological or post-traumatic defects...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28682243/orbit-segmentation-by-surface-reconstruction-with-automatic-sliced-vertex-screening
#7
Tai Chiu Hsung, John Lo, Mei-Man Chong, Tazuko K Goto, Lim Cheung
In segmentation of human orbit in computer tomography (CT) images, traditional approaches are slice-by-slice manual editing or shape interpolation with selected slices interactively. It is not only time consuming, but also inefficient, exhibits inter-operator variability and repeatability problems. In this study, we aim to develop a computational approach to the segmentation of orbits. The first step is to perform Hounsfield unit thresholding to segment the bony structure around the orbit. Then a three dimensional (3D) mesh model is generated...
June 29, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28678820/effect-of-reduced-z-axis-scan-coverage-on-diagnostic-performance-and-radiation-dose-of-neck-computed-tomography-in-patients-with-suspected-cervical-abscess
#8
Jakob Weiss, Michael Maurer, Dominik Ketelsen, Mike Notohamiprodjo, Dominik Zinsser, Julian L Wichmann, Konstantin Nikolaou, Fabian Bamberg, Ahmed E Othman
PURPOSE: To evaluate the effect of reduced z-axis scan coverage on diagnostic performance and radiation dose of neck CT in patients with suspected cervical abscess. METHODS: Fifty-one patients with suspected cervical abscess were included and underwent contrast-enhanced neck CT on a 2nd or 3rd generation dual-source CT system. Image acquisition ranged from the aortic arch to the upper roof of the frontal sinuses (CTstd). Subsequently, series with reduced z-axis coverage (CTred) were reconstructed starting at the aortic arch up to the orbital floor...
2017: PloS One
https://www.readbyqxmd.com/read/28678580/reconstructive-subperiosteal-midface-lift-a-three-nonvisible-incision-approach
#9
Marco Sales-Sanz, Constanza Barrancos, Hae-Ryung Won-Kim, Andrea Sales-Sanz, César Colmenero
This article describes our surgical technique for subperiosteal midface elevation in patients with paralytic lower eyelid malposition or cicatricial inferior eyelid retraction. Nineteen patients with paralytic lower eyelid malposition and 15 patients with cicatricial inferior eyelid retraction underwent a subperiosteal midface lift (n = 34). The procedure was performed under local anesthesia through three nonvisible incisions. A transconjunctival incision allows preseptal dissection to the orbital rim, followed by a subperiosteal dissection of the midface...
July 5, 2017: Orbit
https://www.readbyqxmd.com/read/28677952/controlled-growth-and-atomic-scale-mapping-of-charged-hetero-interfaces-in-pbtio3-bifeo3-bilayers
#10
Ying Liu, Yinlian Zhu, Yunlong Tang, Yujia Wang, Shuang Li, Sirui Zhang, Mengjiao Han, Jinyuan Ma, Jagadeesh Suriyaprakash, Xiuliang Ma
Functional oxide interfaces have received a great deal of attention owing to their intriguing physical properties induced by the interplay of lattice, orbital, charge and spin degrees of freedom. Atomic-scale precision growth of the oxide interface opens new corridors to manipulate the correlated features in nanoelectronics devices. Here we demonstrate that both head-to-head positively charged and tail-to-tail negatively charged BiFeO3/PbTiO3 (BFO/PTO) hetero-interfaces were successfully fabricated by designing the BFO/PTO film system deliberately...
July 5, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28677593/scanning-tunnelling-spectroscopy-and-manipulation-of-double-decker-phthalocyanine-molecules-on-a-semiconductor-surface
#11
Yi Pan, Kiyoshi Kanisawa, Naoto Ishikawa, Stefan Fölsch
A scanning tunnelling microscope (STM) operated at 5 K was used to study dysprosium biphthalocyanine (DyPc2) molecules adsorbed on the inert III-V semiconductor surface InAs(111)A. Orbital imaging and scanning tunnelling spectroscopy (STS) measurements reveal that the molecular electronic structure remains largely unperturbed, indicating a weak molecule-surface binding. The molecule adsorbs at the In vacancy site of the (2×2)-reconstructed surface and is highly sensitive to current-induced excitations leading to random rotational fluctuations...
July 5, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28671104/nitroglycerin-hypotensive-effect-and-application-in-a-combined-surgery-for-reconstruction-after-ipsilateral-maxillectomy-and-orbit-evisceration
#12
Yuhang Sun, Xiaohui Dong, Guofeng Zhang, Jing An, Haojun Yuan
The oral and maxillofacial region is rich in blood, and it is often difficult to stop bleeding during the operation of maxilla. Nitroglycerin is one of the most commonly used antihypertensive drugs in our hospital. We observed the effect of controlled hypotension in patients with maxillary resection. In group N, the patients had different degrees of tachycardia after using nitroglycerin only. In addition, nitroglycerin has the characteristics of rapid drug resistance. A combined reversed temporal muscle flap and random forehead flap technique was performed successfully to reconstruct the large defect after ipsilateral maxillectomy and orbit evisceration...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28665386/-modern-diagnosis-and-treatment-in-children-with-congenital-basal-encephalocele
#13
A V Sakharov, V V Roginskiy, D N Kapitanov, A L Ivanov, E V Shelesko, S K Gorelyshev, A A Evteev, N V Lemeneva, D N Zinkevich, Yu A Kochkin, V I Ozerova, L A Satanin
Basal encephalocele is a rare disease that predominantly occurs in children. Its most common symptoms include nasal liquorrhea, difficulty in nasal breathing, and deformity of the naso-orbital region. MATERIAL AND METHODS: The study group included 19 patients with basal encephalocele, aged 2 months to 18 years. Ten (59%) patients were operated on through a transnasal endoscopic approach; 3 (17.5%) patients were operated on through a transcranial approach; 4 (23.5%) patients were operated on using a combined approach: the patients underwent simultaneous elimination of a cranio-orbital region deformity using the basal transcranial approach as well as hernial sac resection and hernioplasty using the transnasal endoscopic approach...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28627768/spatially-resolved-large-magnetization-in-ultrathin-bifeo3
#14
Er-Jia Guo, Jonathan R Petrie, Manuel A Roldan, Qian Li, Ryan D Desautels, Timothy Charlton, Andreas Herklotz, John Nichols, Johan van Lierop, John W Freeland, Sergei V Kalinin, Ho Nyung Lee, Michael R Fitzsimmons
Here, a quantitative magnetic depth profile across the planar interfaces in BiFeO3 /La0.7 Sr0.3 MnO3 (BFO/LSMO) superlattices using polarized neutron reflectometry is obtained. An enhanced magnetization of 1.83 ± 0.16 μB /Fe in BFO layers is observed when they are interleaved between two manganite layers. The enhanced magnetic order in BFO persists up to 200 K. The depth dependence of magnetic moments in BFO/LSMO superlattices as a function of the BFO layer thickness is also explored. The results show the enhanced net magnetic moment in BFO from the LSMO/BFO interface extends 3-4 unit cells into BFO...
June 19, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28619674/frontal-cranioplasty-in-fronto-metaphyseal-dysplasia
#15
A Joly, A Pare, D Goga, B Laure
INTRODUCTION: Fronto-metaphyseal dysplasia (FMD), also called Gorlin-Cohen syndrome, is a rare syndrome initially described in 1969 by Gorlin and Cohen. Patients present skeletal dysplasia, craniofacial malformations and digit abnormalities. Craniofacial phenotype of FMD is characterized by supraorbital hyperostosis, hypertelorism, down-slanting palpebral fissures, broad nasal bridge and micrognathia. Here, we report the first adult case of craniofacial reconstruction with frontal cranioplasty in a patient with FMD...
June 12, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28616153/a-multidisciplinary-approach-to-the-successful-management-of-gorlin-syndrome
#16
Ryan N Mello, Zaki Khan, Umar Choudry
Gorlin-Goltz syndrome (GGS) is a rare genetic syndrome with variable expressivity and autosomal dominant inheritance. The major features of GGS include numerous basal cell carcinomas (BCCs), keratocysts of the jaw, palmar/plantar pits and calcification of the falx cerebri. Authors report the case of a 51-year-old male with a 19-year history of GGS and multiple BCCs of the head and neck. He presented with a large ulcerating lesion on the right side of his face involving cutaneous, subcutaneous and muscular tissues of the temporal and orbital region...
June 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28613053/-application-of-negative-molds-technology-based-on-three-dimensional-printing-in-digital-maxillofacial-prostheses
#17
X Y Gu, X B Chen, T Jiao, F Q Zhang, X Q Jiang
Objective: To explore a digital negative molds technique based on three-dimensional (3D) printing to assist in the manufacture of maxillofacial prostheses, and to improve the deficiency of the current clinical treatment. Methods: Seventeen patients with maxillofacial defects (including nasal defects, orbital defects, cheek defects, auricle defect) were scanned by means of facial optical scanning and computer tomography (CT). The 3D models were then reconstructed and global registration was made to merge the reconstructed models into a new digital model for 3D design...
June 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28606263/-three-dimensional-vector-analysis-after-decompression-surgery-in-thyroid-associated-ophthalmopathy
#18
J Guo, J Qian, X F Li, F X Meng, R Q Ma
Objective: To analyze the change of globe position after different orbital decompression in thyroid-associated ophthalmopathy (TAO). Methods: It was a retrosective case series study. Twenty-nine TAO patients (33 eyes) underwent orbital decompression were collected between October 2014 and December 2016 at Eye & ENT Hospital of Fudan University. There were 17 males and 12 females, and the average age was 46 years (ranging from 21 to 66 years). Fifteen patients (17 eyes) underwent balanced decompression, 11 patients (11 eyes) underwent deep lateral decompression, and 4 patients (5 eyes) underwent medial decompression...
June 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28603580/in-situ-splitting-of-a-rib-bone-graft-for-reconstruction-of-orbital-floor-and-medial-wall
#19
Tetsuji Uemura, Tetsu Yanai, Masato Yasuta, Yoshimi Harada, Aya Morikawa, Hidetaka Watanabe, Masato Kurokawa
In situ splitting of rib bone graft was conducted in 22 patients for the repair of orbital fracture with no other complicating fractures. A bone graft was harvested from the sixth or seventh rib in the right side. The repair of the orbital floor and medial wall was successful in all the cases. Ten patients had bone grafting to the orbital floor, eight had it done onto medial wall, and 4 onto both floor and wall after reduction. The mean length of in situ rib bone graft was 40.9 mm (range, 20-70 mm), the mean width of these was 14...
June 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28601297/outcomes-of-multimodal-management-for-sinonasal-squamous-cell-carcinoma
#20
Arnaud Paré, Pierre Blanchard, Silvia Rosellini, Anne Aupérin, Philippe Gorphe, Odile Casiraghi, Stéphane Temam, François Bidault, Philippe Page, Frédéric Kolb, François Janot, Antoine Moya Plana
BACKGROUND: Poor prognosis of sinonasal cancers (SNC) is usually due to the non-specific symptoms leading to late diagnosis with locally advanced disease. However, previous prognostic studies were often based on heterogeneous cohorts because of the scarcity of SNC. With squamous cell carcinoma being the main histological subgroup, the study aimed to perform a prognostic analysis on sinonasal squamous cell carcinoma (SNSCC) particularly, and to evaluate the oncological results of a multimodal therapy...
May 12, 2017: Journal of Cranio-maxillo-facial Surgery
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