Face Fracture

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Jianxun Zhang - One of the best experts on this subject based on the ideXlab platform.

  • A comparison of structural collapse of fully clamped and simply supported hybrid composite sandwich beams with geometrically asymmetric Face sheets
    Composites Part B: Engineering, 2020
    Co-Authors: Wei Zhang, Qing-hua Qin, Jianxun Zhang
    Abstract:

    Abstract This paper focuses on structural collapse of fully clamped and simply supported hybrid sandwich beams of geometrically asymmetric carbon fiber-reinforced composite Face sheets and an aluminum foam core under three-point bending. Both bending behavior and collapse mechanism have been explored and identified through the collapse mechanism map. Limit analyses have been conducted and these predictions are validated by experimental results. Experimental results show two active failure modes: Face Fracture and core shear. Effect of fully clamped boundary condition is to make bending deformation mechanism towards stretching of Face sheets and core and strengthen the structural load-carrying capacity. Geometric parameters have significant influence on the initial failure load of hybrid sandwich beams under different boundary conditions. The initial failure modes are significantly affected by the mass distributions of Face sheets with the same core thickness. The fully clamped sandwich beams with thick front Face sheet have better Fracture-resistance. For the similar failure modes, the load-carrying capacity of the simply supported sandwich beam with thick front Face sheet is higher than that with thin front Face sheet. The initial failure load of Face Fracture increases with increasing the front Face sheet thickness and the initial failure load of core shear increases with increasing the core thickness.

Subia Ekram - One of the best experts on this subject based on the ideXlab platform.

  • Etiology, Modalities of Zygomaticomaxillary Complex Fracture, open reduction and fixation.
    Journal of clinical and experimental dentistry, 2021
    Co-Authors: Rohit, Vishal, Virendra-kumar Prajapati, Ajoy-kumar Shahi, Om Prakash, Subia Ekram
    Abstract:

    Background Zygomatic complex Fracture is second most common mid Face Fracture and frequent amongst the maxillofacial trauma. Fracture pattern ranges from simple to comminuted and from minimally displaced to severely displaced depending on various factors. Material and Methods 98 patients with zygomaticomaxillary complex Fracture reporting during December 2017 to January 2020 were included in the study. On the basis of radiographic evaluation and computerized tomography scan (CT scan) with 3D reconstruction severity of Fracture was assessed and different treatment options were selected. Results Road traffic accident accounted as the leading cause of Fracture (57.1%) followed by self-fall (16.3%), interpersonal violence (12.3%). Reduction and semi rigid fixation was done in (83.7%), in which 1-point fixation in (22.9%), 2-point fixation in (42.4%) and 3-point fixation in (18.4%). Rest 16.3 % of the cases were managed conservatively since they had minimal displacement. Conclusions Road traffic incident was the main etiology in our study and younger age group patients were more involved. Occipitomental radiograph and computerized tomography scan (CT scan) were used to confirm the diagnosis and to determine the severity of displacement of zygomatic Fracture on the basis of which treatment options were decided. Key words:Incidence, etiology and management zygomaticomaxillary complex Fracture.

Frank Lam - One of the best experts on this subject based on the ideXlab platform.

  • stiffness and strength of oil palm wood core sandwich panel under center point bending
    Materials & Design, 2015
    Co-Authors: Suthon Srivaro, Nirundorn Matan, Frank Lam
    Abstract:

    Abstract This paper presents a study of the bending's stiffness and strength of oil palm wood (OPW) core sandwich panel overlaid with rubberwood veneer under center point bending. Parameters including density and grain orientation of OPW core, rubberwood veneer thickness and span length were investigated. An experimental evaluation of some mechanical properties of OPW and the bending stiffness and strength of the sandwich beams was performed. Linear elastic beam theory was used to predict the bending performance of the panels. Results show that the linear elastic beam theory with the uses of the power law expressions of Young's moduli and shear strength of the OPW as a function of density derived within this study, adequately predicted the stiffness and bending strength of the sandwich beams. Higher OPW core density increased stiffness and strength of the beam. Failures by Face Fracture and core shear were observed which the latter tended to occur at low OPW core density, relatively thick veneer Face and short span length. Grain orientation of OPW core little influenced stiffness and strength of the sandwich board. Finally, the stiffness and failure load equations of the OPW sandwich board were proposed for practical uses of this product.

Klüppel, Leandro Eduardo - One of the best experts on this subject based on the ideXlab platform.

  • Le Fort II osteotomy for medium-Face Fracture sequel correction
    'Fundacao Educacional da Regiao de Joinville - Univille', 2019
    Co-Authors: Verbicaro Thalyta, Sebastiani, Aline Monise, Gerber, Jennifer Tsi, Fernandes, Bruno Viezzer, Zielak, João Cesar, Scariot Rafaela, Klüppel, Leandro Eduardo
    Abstract:

    Introduction: Fractures should be treated by a multi-professional team to minimize sequels. The surgery aims to establish a good maxillary, mandibular relationship to improve mastication and phonetics and may benefit esthetics. Objective: to report the surgical procedure with Le Fort II osteotomy for correction of class III dentofacial deformity and the nasomaxillary deficiency caused by trauma. Case report: Patient victim of aggression for 10 years suffered a Le Fort II Fracture. The Fracture was not treated and the patient developed a severe anteroposterior defect of the nasomaxillary complex andClass III occlusion. The surgery for correcting deformities was performed with the bicoronal, lower eyelid and intraoral accesses. Le Fort II pyramidal osteotomy was performed with a piezoelectric motor to advance 7 mm the nasomaxillary complex. Conclusion: Le Fort II osteotomy is considered satisfactory for advancing the nasomaxillary complex, improving the patient´s psychosocial function and development.Introduction: Fractures should be treated by a multi-professional team to minimize sequels. The surgery aims to establish a good maxillary, mandibular relationship to improve mastication and phonetics and may benefit esthetics. Objective: to report the surgical procedure with Le Fort II osteotomy for correction of class III dentofacial deformity and the nasomaxillary deficiency caused by trauma. Case report: Patient victim of aggression for 10 years suffered a Le Fort II Fracture. The Fracture was not treated and the patient developed a severe anteroposterior defect of the nasomaxillary complex andClass III occlusion. The surgery for correcting deformities was performed with the bicoronal, lower eyelid and intraoral accesses. Le Fort II pyramidal osteotomy was performed with a piezoelectric motor to advance 7 mm the nasomaxillary complex. Conclusion: Le Fort II osteotomy is considered satisfactory for advancing the nasomaxillary complex, improving the patient´s psychosocial function and development

Leandro Eduardo Klüppel - One of the best experts on this subject based on the ideXlab platform.

  • Le Fort II osteotomy for medium-Face Fracture sequel correction
    RSBO, 2019
    Co-Authors: Thalyta Verbicaro, Aline Monise Sebastiani, Jennifer Tsi Gerber, Bruno Viezzer Fernandes, João César Zielak, Rafaela Scariot, Leandro Eduardo Klüppel
    Abstract:

    Introduction: Fractures should be treated by a multi-professional team to minimize sequels. The surgery aims to establish a good maxillary, mandibular relationship to improve mastication and phonetics and may benefit esthetics. Objective: to report the surgical procedure with Le Fort II osteotomy for correction of class III dentofacial deformity and the nasomaxillary deficiency caused by trauma. Case report: Patient victim of aggression for 10 years suffered a Le Fort II Fracture. The Fracture was not treated and the patient developed a severe anteroposterior defect of the nasomaxillary complex andClass III occlusion. The surgery for correcting deformities was performed with the bicoronal, lower eyelid and intraoral accesses. Le Fort II pyramidal osteotomy was performed with a piezoelectric motor to advance 7 mm the nasomaxillary complex. Conclusion: Le Fort II osteotomy is considered satisfactory for advancing the nasomaxillary complex, improving the patient´s psychosocial function and development.