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Copyright of Avances en Odontoestomatologia is the property of Ediciones Avances SL and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales is the property of Academia Colombiana de Ciencias Exactas, Fisicas y Naturales and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article "ORGAN TRANSPLANT: WHERE ARE WE GOING?" highlights the importance of donation and transplantation of cells, tissues, and organs in El Salvador, especially with the changes in the donation law. Key concepts such as donation, transplantation, and procurement are mentioned, as well as types of donors and transplant techniques throughout history. The need to seek alternatives to meet the high demand for organs is emphasized, including biomedical tissue engineering and genetically modified xenotransplants. [Extracted from the article]

Sometimes excised burn wounds cannot be covered immediately with autologous skin grafts, due to local wound conditions, unavailability of donor areas, or because the procedure itself may be risky for patient survival. In these circumstances a temporary coverage is desirable to maintain wound viability, reduce infections, metabolic stress and pain. Allografts have always been considered the best temporary coverage, but availability and cost are of concern. Xenografts can provide temporary coverage, even though its quality is clearly inferior to allograft Although there is a constant evolution in the development of skin substitutes, no single product can be considered as the gold standard This article reviews currently available products and clinical situations in which they can be used. [ABSTRACT FROM AUTHOR]

Introduction: The intermediate screw in a fractured vertebra works as a pressure point with an anterior vector thus creating a lordotic force that corrects kyphosis, provides appropriate three-point fixation and decreases the lever effect. Objective: To describe the course of non-pathologic traumatic fractures of the thoracolumbar spine after instrumentation of the fractured vertebra. Material and methods: A total of 37 patients with a diagnosis of traumatic vertebral fracture in the thoracolumbar area (T9-L4) were operated from January 2008 to December 2012. Patients included 28 males (75.6%) and 9 females (24.4%); mean age was 41.8 years. Results: Correcting the total diameter of the spinal canal results in a 2.11 times higher chance of neurologic improvement; the relative risk of fusion was 0.97 with autologous graft as compared with a heterologous graft (CI 95% = 0.69 - 1.36) and 1.18 with instrumentation of the fractured vertebra (CI 95% = 0.42 - 3.31). Conclusions: Pedicle screw fixation at the fracture level is a safe and effective method to treat thoracolumbar fractures; it provides additional fixation points that assist in fracture reduction and correction of kyphosis, improving at the same time back pain and maintaining the corrective effect. Procedure indications include integrity of the posterior ligament complex and at least one intact pedicle in the fractured vertebra. [ABSTRACT FROM AUTHOR]

Usually bone tissue loss caused by trauma, osteonecrosis, and tumors has been treated using autograft, allograft, xenograft, and implantation of substitute materials. Each of these treatments has significant limitations, like availability of sufficient donor tissue, disease transmission, donor site morbidity, and inability of materials to remodel and react against physiological conditions. For all these reasons there is a need for alternative bone replacement procedures. Tissue Engineering aims to satisfy this need by the development of bone substitutes using different cell types, three-dimensional matrixes (scaffolds), in a medium supplemented with growth factors. The present review is focused in Bone Tissue Engineering and its most important aspects. [ABSTRACT FROM AUTHOR]

Introduction. One of the most important technologies developed in the last fifty years has been the tissue and bone banking technology, this technology has allowed an important improvement in treatment of multiple diseases of the musculoskeletal system. Historic background. The first successful bone xenograft was reported in 1668 by Job Janszoon Van Meekeren, the first successful bone allograft report was done by William MacEwen in 1879. During the second half of the XIX century and the XX century there was a lot of investigation about bone grafts, at the same time there was an important technologic development that allows the arise of the bone and tissue banks in the first half of the XX century. The first projects of bone and tissue banks in Mexico were done in the decade of 1940, the majority of these projects were abandoned because there were many limitations in the country for this institutions. Utilization of bone allografts in Mexico. Since September the 26th of 2000 until June the 30th of 2004 this bone and tissue bank has provided 4,175 allografts utilized in 2,451 surgical procedures, these surgical procedures were done in 27 states around the Mexican Republic. Research. There are several research projects in our Bone and Tissue Banking, the most important of them is the culture of autologous chondrocites for treatment of chondral defects. Conclusion. The availability of bone allografts procured, processed and distributed according to national and international standards increases the therapeutic options and outcomes for our patients and contributes to the advance of the national orthopedic surgery. [ABSTRACT FROM AUTHOR]

Copyright of Medicina Oral (16656024) is the property of Colegio Nacional de Cirujanos Dentistas Militares A.C. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)