Retrospective comparative study of bone loss in implants with and without immediate loading in the Egas Moniz university clinic

To evaluate bone loss after three years in implants placed at the implantology consult at the Egas Moniz University Clinic, relating bone loss to the type of loading (conventional or immediate load). A comparative and retrospective study, performed on a sample of 65 implants, placed in 24 of 327 patients, who attended the implantology consult at the Egas Moniz University Clinic in 2015, representing 7.3% of the study population through the measurement of distance between implant platform and bone using radiographs. Three years after implant placement with and without immediate loading there is statistically significant bone loss mesially and distally. It was found that when compared bone loss in loaded vs unloaded mesially and distally implants, there were no statistically significant differences. The bone loss of the unloaded implants was compared three years after being placed, with the bone level of the loaded implants also three years later. No significant difference was found. Although no statistically significant differences were found between bone loss in loaded implants vs unloaded mesially and distally, as it is supported by the literature, it was possible to conclude that there was, in fact, a statistically significant bone loss, mesially and distally, three years after implant placement with and without immediate loading. This may be due to poor oral hygiene, a history of periodontitis, smoking and peri-implantitis.info:eu-repo/semantics/publishedVersio

STUDY OF SEQUENTIAL EFFECTS OF BLAST WAVES IN CONFINED AND ADJACENT STRUCTURES

The study of the effect of explosive blast in confined spaces, particularly the conditions under which blast is transmitted to adjacent compartments and the effects produced, is of relevance for the vulnerability assessment of buildings, aircraft and ships, being of paramount importance in the context of national security and defence due to the permanent and diverse threats of present times. In particular it is aimed, through numerical modelling of the phenomena, to study the response of adjacent compartments, one of them subjected to an internal explosion, to identify the effect of compartment volume and material properties in the conditions that will cause rupture and loss of structural integrity and the effect in neighbouring structures of the sequential wave blast. Together with the study of the modes of collapse and rupture of materials used in naval shipbuilding, in this case the AA5083-H111 aluminium alloy, the present work will be the basis for the setting-up of a tool for the design of naval ships and vessels, providing the means to analyse and predict their vulnerability to several types of military ordnance

O (Lean) Six Sigma como estratégia para o aumento da competitividade na Logística Farmacêutica.

Após apresentação dos conceitos de (Lean) Six Sigma, qualidade e melhoria contínua, expomos os resultados de uma pesquisa descritiva e exploratória efetuada pela DHL Supply Chain. A sua equipa do (Lean) Six Sigma dedica atualmente atenção aos problemas surgidos no Healthcare da DHL Supply Chain. Nesta fase, o DMAIC está a ser implementado com o objetivo de conhecer, delimitar e solucionar os problemas presentes. É com base neste trabalho que apresentamos o estudo de caso que conclui esta dissertação. O problema em análise consiste na baixa produtividade. Havia capacidade instalada de resposta às necessidades do cliente mas ocorriam ineficiências que a tornavam insuficiente. Realizamos um levantamento exaustivo do processo que tivemos a oportunidade de acompanhar. As falhas foram detetadas e classificadas. Seguimos com a apresentação de soluções para resolver o problema fulcral da produtividade. Com este estudo de caso, procuramos contribuir para a logística farmacêutica com a implementação da metodologia DMAIC, objetivando realçar a estratégia desenvolvida bem como os ganhos alcançados. Este é um processo de melhoria contínua, evoluindo para a implementação do Lean posteriormente. O aumento da produtividade é evidente e confirmado pelos indicadores existentes: redução de horas extras, atrasos de expedição, números de erros por remessas processadas

La ermita del calvario de Canet Lo Roig estudio arquitectónico y propuesta de intervención urgente

Treball final de Grau en Arquitectura Tècnica. Codi: ED0945. Curs acadèmic 2015-2016El presente Proyecto se elabora como trabajo final de grado. Su objeto es realizar el estudio constructivo y estructural de edificio histórico. Se ha elegido para la realización del proyecto La Ermita del Calvario de Canet lo Roig (Provincia de Castellón). El desarrollo del trabajo ha sido realizado a partir de unas hipótesis concretas, debido a la falta de medios materiales para la realización de un estudio más profundo. Se ha partido de unas causas que se han considerado bastante probables de todas las lesiones analizadas en este trabajo

Necrotizing sialometaplasia and bulimia: a case report

Bulimia is an eating disorder with a great prevalence in young women. Due to its multifactor ethiology, bulimia has systemic consequences. In the literature, necrotising sialometaplasia is seldom associated with bulimia. Its etiopathogenesis is discussed by several authors; nevertheless, the consensus does not consider the relevance of local trauma associated with induced vomiting. A case of necrotising sialomethaplasia, presented with a single hard palatal ulcer in a bulimic woman is described in the present report. The patient did not present significant systemic laboratorial values, nor physical weight variations, which highlights the relevance of performing a complete medical clinical history when diagnosing this rare pathologyThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) licenseinfo:eu-repo/semantics/publishedVersio

Association of herpesvirus and periodontitis: a clinical and laboratorial case-control study

© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)Objectives: A significant influence of the Herpesviridae family in the progression of periodontal disease has been suggested. The aim of this study was to investigate the potential association of four Herpesviruses (HSV-1, HSV-2, cytomegalovirus [CMV], and Epstein-Barr virus [EBV]) with periodontal disease using a qualitative test for evaluating the presence or absence of viral DNA in crevicular fluid samples of both healthy periodontal patients and periodontal compromised patients. Materials and methods: A case-control study was conducted in 100 participants at a university clinic. A qualitative test was used for evaluating the presence/absence of viral DNA in crevicular fluid samples of both healthy periodontal patients and periodontal compromised patients, and considering the periodontitis staging (stage II, stage III, and stage IV) and grading (grade A, grade B, and grade C). Statistical analysis: The distribution of the same exposure variables to the periodontitis staging and grading was compared using Chi-square, Fisher's exact, and Gamma tests depending on the variable characteristics. The significance level was set at 5%. The association of the variables: age, sex, diabetes, smoking, alcohol, and oral hygiene was also considered. Results: The prevalence of Herpesviridae family virus DNA was 6% for the periodontal healthy group and 60% for the periodontitis group (roughly 60% on periodontitis stages II, III, and IV, p <0.001; and twofold increase in moderate and rapid progression grades compared with the slow progression grade, p <0.001). HSV1 DNA was prevalent in all periodontitis stages and grades. HSV 2, EBV, and CMV DNA had increasing prevalence rates in more severe stages (stages III and IV, p <0.001); while considering periodontitis grade, HSV2 (p = 0.001), CMV (p = 0.019) and EBV (p <0.001) DNA were prevalent only in grades B and C, with EBV DNA registering a marked prevalence in grade C. Conclusion: A significant different distribution of Herpesviridae virus DNA per each stage of disease was registered.info:eu-repo/semantics/publishedVersio

Osteotomy at low-speed drilling without irrigation versus high-speed drilling with irrigation: an experimental study

"Introduction: Excessively traumatic surgery can adversely affect the maturation of bone tissue and consequently diminish the predictability of osseointegration so the mechanical and thermal damage should be minimized during surgical procedure. The purpose of this study is to evaluate immediate histological alterations in rabbit tibias, produced by low speed drilling (50 rpm) without irrigation and conventional drilling (800 rpm) under profuse irrigation. Material and Methods: Thirty-six implant osteotomies were created in the tibias of 6 White female rabbits. Drilling began with a 1.5 mm round bur, followed by 2.0 mm, 2.5 mm and 3.5 mm helical drills. The posterior tibial cortex was evaluated as the positive control, and it was preserved during the surgical procedure. The receptor beds were collected for histological analysis. Results: All defects showed regular edges. Hematoxylin eosin (HE) sections showed that both techniques preserved the bone structure and the presence of living cells. No histological differences between the two surgical drilling techniques were found. Conclusions: Based on our results, we can conclude that the effects of implant site preparation on bone by low speed drilling (50 rpm) without irrigation and conventional drilling (800 rpm) under abundant irrigation are similar. Both surgical drilling techniques preserve bone-cell viability and the clinician can decide which drilling technique to use, based on other criteria. Keywords: Osteotomy; Osseointegration; Rabbits; Therapeutic Irrigation; Tibia; Wound Healing.

Selección de procedimientos de tratamiento digital de imagen en aplicaciones de detección de defectos en carriles-bici y una propuesta de clasificación mediante Big Data

En este documento se describen, en primer lugar, una serie de procedimientos de tratamiento digital de imagen, a llevar a cabo con el fin de conseguir automatizar la detección de defectos en señales horizontales de carriles bici. Para ello, haremos uso de imágenes procedentes del carril bici de la ciudad de Sevilla, y realizaremos el tratamiento digital de estas a través del software MATLAB. Por otra parte, se dará otra posible solución al mismo problema desde una perspectiva totalmente distinta. Propondremos la creación de una aplicación a través de la cual los ciudadanos puedan informar ellos mismos al Ayuntamiento sobre cualquier tipo de incidencia relacionada con la vía ciclista. Esta aplicación almacenará los datos que posteriormente analizaremos desde un enfoque big data, para sacar conclusiones al respecto. Para ello, utilizaremos dos softwares de visualización de datos: Carto y Tableau. Finalmente, hablaremos de Hadoop MapReduce y Apache Spark, dos frameworks de computación en clúster que podremos utilizar para procesar nuestros datos de manera distribuida. De todo ello se concluye que, una buena forma de automatizar la detección de señales desgastadas,es realizando una comparación pixel a pixel entre la fotografía real de la señal y una imagen ideal dónde la señal se encuentre en perfecto estado. Para ello, las fotografías deben ser tomadas respetando una serie de normas, como son la luminosidad, o la distancia y ángulo que hay entre la lente de la cámara y la propia señal. Por otro lado, también se concluye que softwares como Carto y Tableau nos pueden proporcionar una buena alternativa al tratamiento con MATLAB. Para ello, se necesitaría que la ciudadanía participase activamente en labores de recolección de datos. Por último, destacar MLib, una librería de machine learning que nos puede abrir una vía de desarrollo interesante, en la que nuestro sistema, además de funcionar mediante computación en clúster, sería capaz de aprender a discernir entre señales en buen y mal estado.Universidad de Sevilla. Grado en Ingeniería de las Tecnologías de Telecomunicació