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https://www.readbyqxmd.com/read/28142354/the-use-of-three-dimensional-printing-technology-in-orthopaedic-surgery
#1
Tak Man Wong, Jimmy Jin, Tak Wing Lau, Christian Fang, Chun Hoi Yan, Kelvin Yeung, Michael To, Frankie Leung
Three-dimensional (3-D) printing or additive manufacturing, an advanced technology that 3-D physical models are created, has been wildly applied in medical industries, including cardiothoracic surgery, cranio-maxillo-facial surgery and orthopaedic surgery. The physical models made by 3-D printing technology give surgeons a realistic impression of complex structures, allowing surgical planning and simulation before operations. In orthopaedic surgery, this technique is mainly applied in surgical planning especially revision and reconstructive surgeries, making patient-specific instruments or implants, and bone tissue engineering...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28126503/-pathophysiology-of-obstructive-sleep-apnea-syndrome-and-its-cardiometabolic-consequences
#2
Marie Destors, Renaud Tamisier, Louis-Marie Galerneau, Patrick Lévy, Jean-Louis Pepin
Obstructive sleep apnoea syndrome (OSAS) is characterized by recurrent partial or complete pharyngeal collapses during sleep. The pathophysiology of OSAS is complex and multifactorial. Factors influencing upper airway patency include a reduction in upper airway dimensions that can result from both anatomical and functional alterations (obesity, fluid shift or maxillo-facial structural changes), and increased pharyngeal collapsibility owing to reduced neuromuscular compensation and lack of the pharyngeal protective reflex during sleep...
January 23, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28122135/pd-1-expression-correlates-with-disease-severity-and-il-5-in-chronic-rhinosinusitis-with-nasal-polyps
#3
Inge Kortekaas Krohn, Sonja Bobic, James Dooley, Feng Lan, Nan Zhang, Claus Bachert, Brecht Steelant, Dominique Bullens, Adrian Liston, Jan L Ceuppens, Sven F Seys, Peter W Hellings
BACKGROUND: Programmed cell Death 1 (PD-1) is a negative regulator of T cell responses. Expression of PD-1 and its ligands PD-L1 and PD-L2 in chronic rhinosinusitis with nasal polyps (CRSwNP) is poorly studied. METHODS: Expression of PD-1, PD-L1, PD-L2, TGF-β, IL-5 and IL-10 mRNA was measured by RT-PCR on tissue homogenates of patients with CRSwNP (n=21) and healthy controls (n=21) and on primary epithelial cells. Disease severity was scored using the Lund-Mackay scores of maxillo-facial CT scans...
January 25, 2017: Allergy
https://www.readbyqxmd.com/read/28116943/dental-trauma-and-bicycle-safety-a-report-in-italian-children-and-adolescents
#4
Francesca Amadori, Elena Bardellini, Alessandro Copeta, Giulio Conti, Valerio Villa, Alessandra Majorana
OBJECTIVES: This retrospective study aims to analyze the pattern of oro-facial trauma from bicycle accidents in Italian children and adolescents, focusing on the safety devices used. METHODS: The medical records of 1405 patients of the Dental Clinic of the University of Brescia, between the age of 0 to 18, who experienced a dento-facial trauma from the use of a bicycle, were analyzed. Data regarding age, gender, weight, height, dominant hand, type of bicycle, use of safety devices, location and type of dental trauma, teeth involved, bone fractures and soft tissue lesions were recorded...
January 24, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28049604/evaluating-tumour-after-care-in-oral-squamous-cell-carcinoma-insights-into-patients-health-related-quality-of-life
#5
Oliver Bissinger, Andrea Rau, Steffen Koerdt, Klaus-Dietrich Wolff, Marco Rainer Kesting, Carolin Götz
INTRODUCTION: Tumour aftercare (tac) is an essential tool in oncology. The main aim of these follow ups is to diagnose recurrence and second tumours from the beginning. Tac appointments can create a special environment for patients' further concerns. The purpose of the current study was to evaluate tac of patients diagnosed with OSCC and to investigate their health related quality of life (hrql). MATERIAL AND METHODS: A German questionnaire was created by two maxillo-facial surgeons with several years of tac experience...
December 9, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27665949/morphometric-analysis-of-the-mandible-in-the-durban-metropolitan-population-of-south-africa
#6
Sundika Ishwarkumar, Pathmavathie Pillay, Mohammed Rashid Haffajee, Kapil Sewsaran Satyapal
The identification of an individual from skeletal remains plays a vital role in forensic investigation as it is essential for the identification of the individual's age, sex, and/or race and further analysis. Skeletal characteristics differ from one population group to another since population-specific osteometric standards exist for sex determination. Since the mandible is the largest, strongest and most durable compact facial bone, it is the best preserved after death. While sexual dimorphism of the mandible is indicated by its shape and size, morphometric analysis is more accurate in the determination of sex from the skull...
September 26, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/27566879/-traumatic-optic-neuropathy-report-of-8-cases-and-review-of-the-literature
#7
A Le Guern, C Marks-Delesalle, L Borry, J Chekroun, C Ciocanea, C Gruchala, L Gogneaux, A Lossouarn, J M Mery, L Nielloud, V Vasseur, S Defoort-Dhelemmes
Although underestimated, visual involvement is among the most frequent neurological complications of head trauma. There is no consensus in the management of these patients and visual recovery is uncertain. The goal of our study is to describe the clinical presentation and the clinical course of traumatic optic neuropathy in patients with head or maxillo-facial trauma. The clinical records of 8 patients, treated from November 2007 to March 2012, were reviewed in the department of ophthalmology (visual testing) of the university regional medical center in Lille...
September 2016: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/27547064/assessing-the-prevalence-of-paranasal-sinuses-anatomical-variants-in-patients-with-sinusitis-using-cone-beam-computer-tomography
#8
Raluca Ancuta Roman, Mihaela Hedeşiu, Mirela Gersak, Floarea Fidan, Grigore Băciuţ, Mihaela Băciuţ
BACKGROUND AND AIMS: To asses, by using the Cone Beam CT (CBCT) reformatted images, the presence of anatomical variants of the sinonasal cavities and to determine the correlation of these variations with the onset of maxillary sinus inflammations. METHOD: The study is a retrospective one and consists of the investigation of 130 patients with CBCT imaging, patients that were referred to the Maxillo-Facial Clinic, Radiology Department of the Iuliu Hatieganu University of Medicine and Pharmacy in Cluj-Napoca, for clinical symptoms of sinusitis within a period of 24 months...
2016: Clujul Medical (1957)
https://www.readbyqxmd.com/read/27533711/c-mac-videolaryngoscope-compared-with-direct-laryngoscopy-for-rapid-sequence-intubation-in-an-emergency-department-a-randomised-clinical-trial
#9
Simon Sulser, Dirk Ubmann, Martin Schlaepfer, Martin Brueesch, Georg Goliasch, Burkhardt Seifert, Donat R Spahn, Kurt Ruetzler
BACKGROUND: Airway management in the emergency room can be challenging when patients suffer from life-threatening conditions. Mental stress, ignorance of the patient's medical history, potential cervical injury or immobilisation and the presence of vomit and/or blood may also contribute to a difficult airway. Videolaryngoscopes have been introduced into clinical practice to visualise the airway and ultimately increase the success rate of airway management. OBJECTIVE: The aim of this study was to test the hypothesis that the C-MAC videolaryngoscope improves first-attempt intubation success rate compared with direct laryngoscopy in patients undergoing emergency rapid sequence intubation in the emergency room setting...
December 2016: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/27358080/computer-aided-cephalometric-landmark-annotation-for-cbct-data
#10
Marina Codari, Matteo Caffini, Gianluca M Tartaglia, Chiarella Sforza, Giuseppe Baselli
PURPOSE: Nowadays, with the increased diffusion of Cone Beam Computerized Tomography (CBCT) scanners in dental and maxillo-facial practice, 3D cephalometric analysis is emerging. Maxillofacial surgeons and dentists make wide use of cephalometric analysis in diagnosis, surgery and treatment planning. Accuracy and repeatability of the manual approach, the most common approach in clinical practice, are limited by intra- and inter-subject variability in landmark identification. So, we propose a computer-aided landmark annotation approach that estimates the three-dimensional (3D) positions of 21 selected landmarks...
January 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27330417/historical-development-of-the-treatment-of-skull-base-tumours
#11
REVIEW
Antonio Mazzoni, Marco Krengli
Surgery has evolved greatly over the last decades thanks to the more sophisticated and conservative surgical approaches and also thanks to the progress of diagnostic imaging. An added value is represented by the increased experience of the professionals and the close multidisciplinarity of the procedures including neurosurgeons, otolaryngologists and maxillo-facial surgeons. One of the most recent developments is the endoscopic surgery allowing for more conservative and cosmetically satisfactory outcomes. Radiation therapy has greatly changed over the last decades thanks to the technology advances related both to the availability of new imaging modalities and techniques of radiation delivery...
July 2016: Reports of Practical Oncology and Radiotherapy
https://www.readbyqxmd.com/read/27328894/bone-tissue-engineering-using-polyetherketoneketone-scaffolds-combined-with-autologous-mesenchymal-stem-cells-in-a-sheep-calvarial-defect-model
#12
Carina Adamzyk, Paul Kachel, Mareike Hoss, Felix Gremse, Ali Modabber, Frank Hölzle, Rene Tolba, Sabine Neuss, Bernd Lethaus
Polyetherketoneketone (PEKK) a high performance thermoplastic polymer that is FDA-approved for cranio- and maxillo-facial as well as spineal surgery. We studied the viability, growth and osteogenic differentiation of bone marrow-derived human and sheep mesenchymal stem cells (MSC) in combination with a 3D scaffold made of PEKK using different cell-based assays. To investigate if autologous MSC, either undifferentiated or osteogenically pre-differentiated, augmented bone formation after implantation, we implanted cell-seeded 3D PEKK scaffolds into calvarial defects in sheep for 12 weeks...
August 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27259708/polyetheretherketone-peek-for-medical-applications
#13
REVIEW
Ivan Vladislavov Panayotov, Valérie Orti, Frédéric Cuisinier, Jacques Yachouh
Polyetheretherketone (PEEK) is a polyaromatic semi-crystalline thermoplastic polymer with mechanical properties favorable for bio-medical applications. Polyetheretherketone forms: PEEK-LT1, PEEK-LT2, and PEEK-LT3 have already been applied in different surgical fields: spine surgery, orthopedic surgery, maxillo-facial surgery etc. Synthesis of PEEK composites broadens the physicochemical and mechanical properties of PEEK materials. To improve their osteoinductive and antimicrobial capabilities, different types of functionalization of PEEK surfaces and changes in PEEK structure were proposed...
July 2016: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/27206862/soft-tissue-coverage-on-the-segmentation-accuracy-of-the-3d-surface-rendered-model-from-cone-beam-ct
#14
J K Dusseldorp, H C Stamatakis, Y Ren
OBJECTIVES: The aim of this study is to investigate the effect of soft tissue presence on the segmentation accuracy of the 3D hard tissue models from cone-beam computed tomography (CBCT). MATERIALS AND METHODS: Seven pairs of CBCT Digital Imaging and Communication in Medicine (DICOM) datasets, containing data of human cadaver heads and their respective dry skulls, were used. The effect of the soft tissue presence on the accuracy of the segmented models was evaluated by performing linear and angular measurements and by superimposition and color mapping of the surface discrepancies after splitting the mandible and maxillo-facial complex in the midsagittal plane...
May 21, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27100636/bone-regeneration-of-the-maxillofacial-region-through-the-use-of-mesenchymal-cells-obtained-by-a-filtration-process-of-the-adipose-tissue
#15
Valentina Pellacchia, Giancarlo Renzi, Roberto Becelli, Fabio Socciarelli
In this work, the authors will discuss about a new protocol and rapid alternative to isolate the mesenchymal stromal cells from the stromal vascular fraction, without the use of collagenase, to regenerate the bone tissue in the maxillo-facial region. This method employs a device that allows the isolation and concentration of stromal vascular fraction by means of lipoaspirates, which separate the lipid component and fragments of the extracellular matrix. The innovative element consists in using a filtration device instead of a centrifuging device to separate the different components...
May 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27083225/-maxillo-facial-surgery-in-skeletal-class-ii-repercussions-on-the-temporo-mandibular-joints
#16
Armelle Manière-Ezvan, Charles Savoldelli, Floriant Busson, Arlette Oueiss, Jean-Daniel Orthlieb
These interventions usually aimed at the correction of the skeletal discrepancy by mandibular retrognatism with an advancement of the distal portion of the mandible after mandibular osteotomy. The position of the condyle is determined during the osteosynthesis with miniplates. Condyles are set back in relation with the supine position of the patient and the weakness of his (her) curarized muscle. All studies show that surgery of mandibular advancement causes a lateral, torque and backward movement of the condyles, all harmful to the condyles...
March 2016: L' Orthodontie Française
https://www.readbyqxmd.com/read/27056765/treatment-of-labio-palatal-cleft-presentation-of-a-clinical-case
#17
Mourad Sebbar, Amal El Aouame, Idriss Tougui
INTRODUCTION: Management of adult patients with a cleft lip and palate is often multidisciplinary. The aim of orthodontic treatment is to correct the malocclusion. When the skeletal dysmorphosis is significant, the solution has to be orthognathic surgery. OBSERVATION: The authors report the case of a 16-year-old patient with a cleft lip and palate and a skeletal Class III. The aim of the orthodontic treatment was to correct dento-alveolar compensations. The skeletal discrepancy was corrected by maxillary advancement and mandibular setback...
June 2016: International Orthodontics
https://www.readbyqxmd.com/read/27056621/autologous-adipose-derived-stem-cells-basic-science-technique-and-rationale-for-application-in-ulcer-and-wound-healing
#18
Ilaria Zollino, Michele Zuolo, Sergio Gianesini, Massimo Pedriali, Maria Grazia Sibilla, Mirko Tessari, Francesco Carinci, Savino Occhionorelli, Paolo Zamboni
OBJECTIVES: The present review represents a translational boundary between basic research and surgery, particularly focusing on the promising application of adipose-derived stem cells harvested intra-operatively during debridement of venous leg ulcers. METHODS: We reviewed 830 out of 5578 articles on MEDLINE starting from 1997 and sorted by the relevance option. RESULTS: The technique currently used for adipose-derived stem cells intra-operative harvesting is presented, including a safety evaluation on a cohort of 5089 revised patients who underwent plastic surgery and maxillo-facial surgical procedures...
April 7, 2016: Phlebology
https://www.readbyqxmd.com/read/27039444/-burning-mouth-syndrome-a-joint-biopsychosocial-approach
#19
REVIEW
Francesca Arpone, Florian Combremont, Kerstin Weber, Paolo Scolozzi
Burning mouth syndrome (BMS) is a medical condition that is often refractory to conventional diagnostic and therapeutic methods. Patients suffering from BMS can benefit from a biopsychosocial approach in a joint, medical-psychological consultation model. Such a consultation exists at Geneva University Hospitals, involving the collaboration of the maxillo-facial and oral surgery division and the division of liaison psychiatry and crisis intervention, in order to take into account the multiple factors involved in BMS onset and persistence...
February 10, 2016: Revue Médicale Suisse
https://www.readbyqxmd.com/read/26925556/-principles-of-evidence-based-medicine-in-dentistry-and-maxillo-facial-surgery
#20
EDITORIAL
A S Grigoryan
Evidence based medicine is the conscientious, explicit, and judicious use of current best evidence in making decisions about the care of individual patients.
2016: Stomatologii︠a︡
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