18 research outputs found

    Current Trends in Cleft Lip and Palate Publications During the Last 10 Years: A Bibliometric Analysis

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    Objective: The purpose of this study is to investigate the apparent trends in cleft lip and palate (CLP) studies published over the last 10 years, and assesses the effectiveness of the studies. Materials and Methods: The SCImago Journal Rank (SJR) data were utilized to select the journals with a high SJR indicator in each of the orthodontics, pedodontics, general dentistry, speech therapy, clinical genetics, pediatrics, plastic esthetic and reconstructive surgery and oral surgery areas. CLP-related studies were identified in the databases accessed through Web of Science owned by Clarivate Analytics. The articles were assessed in terms of year of publication, journal title, specialty, article subject matter, affiliations of the authors, citation relationships and countries/regions of origin. A total of 2,696 CLP-related articles published over the last 10 years were identified based on our search criteria. Results: The analysis revealed that the most prominent keywords were “palatoplasty”, “alveolar bone grafting”, “distraction osteogenesis” and “orthognathic surgery” among the treatment procedures. The most common WoS categories among the articles were dentistry, oral surgery & medicine, and surgery. The most cited publications over the last decade have included such terms as “environmental risk factor”, “GRHL3”, “FGFR2”, “loci”, “candidate gene” and “BMP”. Conclusion: Recent CLP articles in the literature have focused mainly on treatment procedures, with the most-cited articles generally containing evaluations of the relationship between CLP and genetics. More recent methods have been discussed in only a limited number of studies

    Cephalometric Evaluation of The Patients with Osas: Uvulo-Glossophareyngeal And Cervico-Craniofacial Skeletally Morphology

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    Aim:In the current study, it was aimed to determine the importance of the cephalometrical radiographic evaluation for the localization of posterior airway obstruction in patients with obstuctive sleep apne syndrome (OSAS).Subjects and Methods:Cephalometric radiographs were obtained from 61 patients diagnosed with OSAS (27 females, 34 males) to assess the uvulo-glossofarengeal and cervico-craniofacial skeletal morphology. These measurements were compared with the cranial and pharyngeal values of skeletally Class 180 healthy individuals' (36 females, 44 males) standard lateral cephalographs.Results:The length of the soft palate (P-Pm) in OSAS patients was found significantly greater than the control group. The thickness of the soft palate in midsagittal plane (x-y) in OSAS patients was found significantly greater than the control group. In OSAS patients, hyoid bone localized significantly to inferior than the control group; the tongue height (TH-Z) was significantly greater in patients with OSAS than the control group. At all levels of pharyngeal airway in the anteroposterior direction (af1-pf1, af2-pf2, af3-pf3, af4-pf4), significant narrowing were found in the OSAS subjects. One of the most significant finding was an extension of the head position in accordance with increased cranioservical angle in OSAS patients.Conclusion:OSAS patients' posterior airway distance narrowed at all levels from nasopharynx to hypopharynx. The craniofacial and pharyngeal anatomy of OSAS patients can be examined in detail by lateral cephalometry and cephalometric examination is an important contribution of OSAS diagnosis

    Finns det skillnader på pojkars och flickors åsikter om ämnet idrott och hälsa?

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    Syfte och frågeställningar Syftet med studien är att få kunskap om flickor och pojkar har olika åsikter om ämnet idrott och hälsa och hur villkoren ser ut. För att svara på mitt syfte har jag gått utifrån två frågeställningar: Vad anser pojkar och flickor om ämnet idrott och hälsa? Är lektionerna upplagda med lika villkor för bägge könen inom ämnet idrott och hälsa? Metod Till denna studie användes det kvalitativ metod. Intervjuerna gjordes på två högstadieskolor i Stockholm. Tre flickor och tre pojkar i årskurs åtta blev intervjuade. Det ställes sammanlagt sjutton frågor till informanterna och intervjuerna spelades in samt antecknades. Resultat Det viktigaste resultatet som framkom var att lektionerna mest präglades av bollaktiviteter.  De flickorna som blev intervjuade tyckte inte om att det förekom mycket bollaktiviteter. Det var skillnad på flickors och pojkars tyckande om ämnet idrott och hälsa samt att lektionerna inte riktigt var på lika villkor. Detta kom jag fram till genom informanternas intervjusvar. Eleverna anser att pojkarna får bestämma mer och flickorna får kortare tider att springa på och lägre höjder att hoppa på. Eleverna förklarade också att flickorna deltar mindre på idrottslektionerna eftersom det anses bland eleverna att fysisk aktivitet är jobbigt och att pojkar tycker mer om idrott. Detta tänkande kan präglas utav att eleverna upplever i sin omgivning att pojkar tycker mer om idrott eller så är lektionerna inte anpassade för att fånga allas intresse.    Slutsats Slutsatsen som man kan dra är att flickorna tycker mindre om idrott än pojkarna. Detta kan vara på grund av att flickorna tycker det är ansträngande med fysisk aktivitet och för att majoriteten av idrottslektionerna består av bollaktiviteter. Lektionerna är även inte på lika villkor då flickorna blir förfördelade inom vissa aktiviteter och pojkarna får bestämma mest över hur lektionsinnehållet får se ut.Studiegång Idrott, fritidskultur och hälsa skolår. Ht 2012</p

    Ice Accretion Prediction on Engine Nacelles in Liquid Phase Clouds

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    More than a hundred in-flight incidences have been reported in the last two decades related to icing on aircraft engine components including rollbacks, mechanical failure and flameouts [1, 2]. Thus, in-flight ice accretion on aircraft engine components and nacelles has been attracting more interest, especially from the airworthiness certification point of view. Computer simulations as well as ground and flight tests are among the means of compliance for airworthiness certification related to safe flight in icing conditions. Although current certification requirements define icing conditions in terms of liquid phase clouds only, recent occurrences have necessitated to extend this envelope to include solid phase and mixed phase clouds, encountered in high altitude convective clouds both for airframes and engines [3, 4]. The present study aims at predicting ice accretion on engine nacelles in liquid phase clouds. Such an effort would also allow the prediction of impingement limits and impingement rates required for the design of ice protection systems. Although there is a wealth of experimental and numerical data for wings and airfoils in the literature, such data for nacelle or intake geometries are scarce. As with most computational tools developed for this purpose, the current tool comprises four main modules; modules for flow-field solution, droplet trajectories and collection efficiencies, thermodynamics and ice accretion. The flow-field solution is accomplished by a panel method modified for nacelle geometries and required engine mass flow rates, while the ice accretion module employs the extended Messinger model [5]. The manuscript summarizes the methods used in the developed computational tool that is being constantly extended with new capabilities since around 8 years, followed by the results obtained for benchmark geometries and flow conditions available in the literature. The results include the collection efficiencies for different flight and cloud conditions, as well as the actual ice shapes obtained for those conditions. Effects of SLD on collection efficiencies and ice accretion are also brought out. Comparisons with experimental and numerical data are also presented for the cases for which these are available

    Maksiller darlığı ve şiddetli çapraşıklığı olan hastanın cerrahi destekli üst çene genişletme tedavisi (SARME) : Olgu sunumu

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    The aim of this case report is to present an adult patient with a narrow maxilla and severe crowding treated with the help of surgically assisted maxillary expansion. A 17-year-old male patient referred to our clinic for the primary complaint of unaesthetic smile and severe upper anterior crowding. Extraoral examination revealed convex profile. Intraoral examination revealed narrow maxilla, posterior cross bite, V shaped upper arch form and severe crowding. The treatment was initiated with corticotomy operation for maxillary expansion. A tooth-borne acyrilic cap splint appliance with Hyrax screw was then fixed for distraction. Distraction protocol was started 7 days postoperatively by 2 turns a day (0.5 mm/ day). The distractor was left in place for an additional 3 months for stabilization and reossification after the required space had been achieved. Orthodontic fixed treatment started within 4 weeks after removal of the appliance. Computed tomography scans of the patient were performed to help the planning of the treatment 1 month before the orthodontic treatment. The data reconstructed using the Mimics software (Materialise, Leuven, Belgium) for surgical planning. Surgically assisted maxillary expansion is a successful treatment modality for adult patients requiring palatal expansion. The total treatment period was 24 months and the results were acceptable.Bu olgu sunumunun amacı dar üst çeneye ve şiddetli yer darlığına sahip yetişkinhastanın cerrahi destekli üst çene genişletilmesi yardımı ile tedavisinin sunulmasıdır.17 yaşında erkek hasta estetik olmayan gülümseme ve şiddetli üst ön çapraşıklık ilekliniğimize başvurdu. Ağız dışı incelemede konvex bir profil olduğu gözlendi. Ağıziçi incelemede dar bir maksilla, arka bölgede çapraz kapanış, V şekilli üst ark formuve şiddetli çapraşıklık gözlendi. Tedavi cerrahi operasyon ile başladı. Hyrax vidaiçeren diş destekli akrilik cap splint distraksiyon apareyi uygulandı. Distraksiyonprotokolüne operasyon sonrası 7 günlük bekleme sonrası günde 2 tur (0.5mm/gün) olacak şekilde başlandı. Gerekli yer elde edildikten sonra stabilizasyon ve yenikemik oluşumunun beklenmesi amacıyla distraktör operasyon sonrası 3 ay ağızdabırakıldı. Apareyin çıkartılmasını takiben 4 hafta sonra sabit tedaviye başlandı.Tedavi planlaması amacıyla hastanın bilgisayarlı tomografi görüntüleri tedaviden 1ay önce alındı. Analiz amaçlı, veriler Mimics (Materialise, Leuven, Belgium) yazılımıile yeniden oluşturuldu. Cerrahi destekli üst çene genişletme tedavisi palatalekspansiyon ihtiyacı olan yetişkin hastalarda başarılı bir tedavi yöntemidir. Toplamtedavi 24 ay sürmüştür ve kabul edilebilir sonuçlar elde edilmiştir

    Icing Simulations on Engine Intake

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    In the present study, the aim is to predict ice accumulation on a 2-D commercial engine intake. The developed tool mainly consists of four modules: modules for the calculation of the flow-field, droplet trajectories and collection efficiencies, thermodynamics and ice accretion. The flow-field solution is done by a panel method modified for the intake geometry and the required engine mass flow rate using a superposition technique. The droplet trajectories are computed using the Lagrangian approach, while the Extended Messinger Model is implemented in the ice accretion module. The results are compared with numerical literature data

    In Flight Icing Simulations on Airfoils

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    It is crucial to predict the ice mass, shape and regions of the airframe which are prone to icing in order to design and develop de/anti-icing systems for aircraft and airworthiness certification . In the current study, droplet collection efficiency and ice shape predictions are performed using an originally developed computational tool for a wing tip for which experimental and numerical data are available. Ice accretion modeling consists of four steps in the developed computational tool: flow field solution, droplet trajectory and collection efficiency calculations, thermodynamic analyses and ice growth calculations using the Extended Messinger Model. The models used for these steps are implemented in a FORTRAN code, which is used to analyze ice accretion on 2D geometries including airfoils and axisymmetric inlets. The results are compared with numerical and experimental data available in the literature
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