Esophageal Disruption From Blunt and Penetrating External Trauma

1976 ◽  
Vol 111 (6) ◽  
pp. 663 ◽  
Author(s):  
C. William Spenler
Keyword(s):  
Author(s):  
Rodrigo Resende

Resumo            Nos últimos anos em todo o mundo, diversas pesquisas científicas realizadas nas áreas de Medicina e Odontologia tem tido como seu tema central à engenharia tecidual envolvendo biomateriais. Essas pesquisas estão sendo realizadas para que possa responder algumas lacunas encontradas no tratamento de lesões relacionados a tecidos moles e duros para uma correta e completa reabilitação dos pacientes. Com isso, os biomateriais enriquecidos com plaquetas ganharam uma maior evidência por estarem proporcionado ótimos resultados no dia a dia da clínica odontológica, em especial na área de implatodontia oral, onde há uma grande necessidade de reabilitar pacientes que sofreram perdas desses tecidos e que se torna imprescindível sua recuperação para um correto posicionamento dos implantes osseointegráveis. A Fibrina Rica em Plaquetas (PRF) é um concentrado, obtido de sangue centrifugado do próprio paciente sem qualquer aditivo, que pode ser considerado um biomaterial de cicatrização autólogo que possui incorporado a ele leucócitos, plaquetas e uma vasta gama de proteínas-chave em uma uma matriz densa de fibrina. As aplicações clínicas deste biomaterial na clínca de implantodontia oral são no prenchimento de alvéolos pós-extração para hemostasia ou associado a enxertos ósseos, levantamento de seio-maxilar ficando em contato direto com a membrana de Schneider, no recobrimento de enxertos instalados sobre alvéolos para que se evite exposição ou traumas externos, dentre outros que auxiliam o dia a dia dos profissionais que trabalham nesta área. Isso com um baixo custo e uma alta taxa de sucesso. O objetivo deste trabalho é realizar uma revisão da literatura demostrando as vantagens e indicações do uso deste biomaterial como auxilio no tratamento de pacientes na clínica de implantodontia oral.Palavras-chave: Fibrina rica em plaquetas; Implantodontia; Biomaterial.Abstract In recent years around the world, several scientific researches carried out in the areas of Medicine and Dentistry have had as their central theme the tissue engineering involving biomaterials. These researches are being conducted to answer some gaps found in the treatment of soft and hard tissue-related injuries for correct and complete rehabilitation of patients. With this, platelet-enriched biomaterials have gained greater evidence because they provide excellent results in daily dental practice, especially in the area of oral implants, where there is a great need to rehabilitate patients who have suffered loss of these tissues. their recovery is essential for the correct positioning of osseointegrated implants. Platelet Rich Fibrin (PRF) is a concentrate obtained from the patient's own centrifuged blood without any additive that can be considered an autologous healing biomaterial that incorporates leukocytes, platelets and a wide range of key proteins into it. a dense matrix of fibrin. The clinical applications of this biomaterial in the oral implant dentistry clinic are in the filling of post-extraction alveoli for hemostasis or associated with bone grafts, sinus-maxillary lift being in direct contact with the Schneider membrane, in the covering of grafts installed over the alveoli so that Avoid exposure or external trauma, among others that help the daily lives of professionals working in this area. This with a low cost and a high success rate. The aim of this paper is to perform a literature review demonstrating the advantages and indications of the use of this biomaterial as an aid in the treatment of patients in the oral implant dentistry clinic. Key-words: Platelet-rich fibrin; Implant dentistry; Biomaterial.


1987 ◽  
Vol 138 (2) ◽  
pp. 266-268 ◽  
Author(s):  
Alexander S. Cass ◽  
Michael Luxenberg
Keyword(s):  

2019 ◽  
Vol 37 (3) ◽  
pp. 18-19
Author(s):  
Roger K.W. Smith

Equine tendinopathy arises through two main mechanisms – external trauma or overstrain injury. The pathogenesis of the former is straight forward and prevention relies on avoiding risk factors for palmar/plantar lacerations and protecting the tendons through the use of boots. For over-strain injuries, these mostly arise from overloading of the distal limb resulting in mid-substance tearing of the digital flexor tendons or borders tears of the deep digital flexor tendon within the confines of the digital sheath and navicular bursa. While some of these injuries may be spontaneous injuries associated solely with overload (such as the intra-thecal injuries of the deep digital flexor tendon), it is widely accepted that most overstrain injuries of the superficial digital flexor tendon (and suspensory ligament) occur as a result of accumulated microdamage which predisposes the tendon to over-strain injury. The mechanisms of this accumulated microdamage are poorly understood but probably relate to the effect of high impact loading of the tendon, sustained during normal exercise, which drives degradative changes in the tendon fascicles (Dudhia et al. 2007) and, in particular, the interfascicular matrix (endotenon) that allows the fascicles to slide past one another as a mechanism for the spring-like extension of the tendon under load (Thorpe et al. 2013). This is compounded by the lack of adaptive remodelling in adult tendon (Smith et al. 2002). This subclinical damage makes the tendon prone to sudden tearing of the tendon matrix during normal exercise, the risk of which is increased by factors such as the firmness of the ground, weight, speed, and fatigue. Strategies for prevention of injury rely on identifying at risk individuals through more sensitive monitoring of tendon health, maximising the quality of tendon during growth using carefully tailored ‘conditioning’ exercise regimes (Smith & Goodship 2008), reducing the degeneration induced by normal training and competition, and avoiding high risk factors for the initiation of the clinical injury.


1994 ◽  
Vol 11 (4) ◽  
pp. 125-127 ◽  
Author(s):  
Frank J.M. Verstraete ◽  
Pieter A.J. van Vuuren
Keyword(s):  

Three dogs each received a three-unit fixed-fixed porcelain-veneer bridge for the replacement of traumatically-lost upper first or second incisor teeth. The bridges remained in place for a period ranging from 6–36 months, before becoming dislodged as a result of external trauma. It was concluded that this type of bridgework is technically feasible and may be justifiable.


1995 ◽  
Vol 160 (9) ◽  
pp. 479-481 ◽  
Author(s):  
Heikki Kiukaanniemi ◽  
Tapio Pirilä ◽  
Kalevi Jokinen
Keyword(s):  

Author(s):  
L J Lombardo ◽  
Arnold M. Heyman ◽  
R W Barnes

1996 ◽  
Vol 105 (5) ◽  
pp. 384-390 ◽  
Author(s):  
Yoav P. Talmi ◽  
Michael Wolf ◽  
Sima Nusem-Horowitz ◽  
Jacob Bar-Ziv ◽  
Jona Kronenberg

Arytenoid subluxation (AS), ie, malpositioning of the arytenoid cartilage with abnormal but existent contact between the joint surfaces, is an uncommon entity, and fewer than 70 cases have been reported, 26 of which were in a recently published series. Usually, AS is the result of upper airway instrumentation, and only a few cases were reported to occur with external trauma to the neck. Some predisposing factors and possible mechanisms have been suggested, but the reason for its occurrence remains obscure. Hoarseness and, to a lesser degree, dysphagia, odynophagia, cough, and sore throat may be indicative of AS. Diagnosis is established by the clinical course, laryngoscopy, and computed tomography. Electromyography and strobovideolaryngoscopy are additional diagnostic measures described. We report 7 cases of postintubation AS of long standing. Three of these patients had prior unilateral vocal cord paralysis, formerly undescribed as a possible contributing factor for AS. The pertinent literature is reviewed and treatment options are discussed.


1985 ◽  
Vol 57 (4) ◽  
pp. 467-470 ◽  
Author(s):  
A. S. CASS ◽  
P. GLEICH ◽  
C. SMITH

Urology ◽  
1978 ◽  
Vol 11 (6) ◽  
pp. 607-611 ◽  
Author(s):  
A.S. Cass ◽  
C.J. Godec

1987 ◽  
Vol 96 (5) ◽  
pp. 488-492 ◽  
Author(s):  
Francis I. Catlin ◽  
Richard J. H. Smith

Subglottic stenosis is a disorder characterized by narrowing of the airway below the glottis or apposing edges of the true vocal cords. In a broad definition, the term may be used to describe airway compromise in the regions of the larynx or the trachea or both. In children, the stenosis is usually due to scar formation secondary to prolonged airway intubation, rather than to external trauma. The location and extent of the stenosis are highly variable; consequently, corrective measures need to be selected to suit the individual problem. In the present series of children, conservative treatment was adequate for lesser degrees of stenosis; those with more severe scarring required external laryngeal surgery. The preoperative evaluation and treatment plans are reviewed.


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