Enxerto de tecido conjuntivo para correção da margem peri-implantar

Soft tissue recessions frequently cause esthetic disharmony and dissatisfaction. The results of coverage in peri-implant sites, in comparison with soft tissue coverage around a tooth, is less predictable. This clinical report describes the correction of an esthetic problem with a single-tooth implant-supported using a subepithelial connective tissue graft (SCTG) combined with the re-establishment of a new limit of gingival margin, and emergence crown profile. After anamnese and clinical exam it was observed an implant in the region of tooth 22 in vestibular position to alveolar ridge with a recession of 5 mm in its vestibular face. In the first cirurgical procedure the crown and the abutment were removed and a SCTG associated with a coronally positioned flap was performed in order to re-establish the limit of gingival margin. After 90 days, it was observed that the tissue in the implant site showed no adequate volume or thickness. Because of that, another SCTG was performed. The reopening procedure to install the healing cap was performed after 4 weeks. Then the prosthesis was installed. At 180 and 360 days postoperative, the implant adjacent tissue presented regular contour, color compatible with health and absence of bleeding. The patient was satisfied with the esthetic result. According to the clinical results and favorable esthetics it was possible to conclude that the use of ETC to correct an esthetic deficiency may be a feasible approach to establish new and stable peri-implant soft tissue contours.

Reação do tecido conjuntivo subcutâneo de ratos ao implante de Artglass®: estudo histológico

Indirect composite resin systems have been routinely recommended for making restorations in distressed patients. The purpose of this study was to evaluate histologically in rats the effect of chronic stress on the reaction of subcutaneous connective tissue after implant of Artglass™. For this purpose, 60 rats were divided into four groups (GI (control), GII (stressed), GIII (Artglass™) and GIV (Artglass™. / stressed) received dorsal subcutaneous implants of polyethylene tubes containing saline solution (GI and GII) or Artglass™ (GIII and GIV). In groups of four animals were sacrificed at 7,14 and 28 days postoperatively. The results allowed to observe more intense inflammatory reaction and tissue organization later in the animals subjected to stress.

Efeito do envelhecimento e do estresse crônico sobre a reação do tecido conjuntivo subcutâneo: estudo histológico em ratos

Physiological functions undergo a gradual retardation that begins around 25-30 years and extends to the death. Moreover, this change affects most severely the activities more complex and more intricate responses to tensions or stress. The purpose of this study was to evaluate histologically in aged rats the effect of chronic stress on the reaction of subcutaneous connective tissue. The purpose of this study was to evaluate histologically in aged rats the effect of chronic stress on the reaction of subcutaneous connective tissue. For this purpose, 60 rats were divided into four groups (GI (control), GII (stressed), GIII (elderly) and GIV (aged / stressed) received dorsal subcutaneous implants of polyethylene tubes containing saline solution. In groups of four animals were sacrificed at 7,14 and 28 days postoperatively. The results allowed to observe more intense inflammatory reaction and tissue organization later in the aged animals subjected to stress.

Efeito do ácido tranexâmico associado à cola de fibrina sobre o reparo ósseo: estudo histológico em ratos

The bone repair process is controlled by complex molecular mechanisms that involve systemic and local factors. Fibrin glue is derived from human plasma and mimics the final pathway of coagulation network. Tranexamic acid inhibits fibrinolysis and prevents or decreases the formation of degradation products of fibrin and fibrinogen. The purpose of this study was to evaluate histologically in rats the effect of tranexamic acid associated with the fibrin glue on bone healing. The experiment used 60 (n = 5) male rats in: GI: Control, GII: fibrin glue, GIII tranexamic acid and GIV /fibrin glue/tranexamic acid. Bone defect (2.5mm diameter) was created in right tibia. The animals were euthanized at 7,14 and 30 days postoperatively, and the pieces were processed with hematoxylin and eosin. The results showed at 7 days post-operative surgical cavity filled with dense connective tissue rich in fibroblasts, permeated by delicate neoformed bone trabeculae in percentage of 70-80% for GI, GII and GIII and GIV to 94.8%. At 14 days post-operative newly formed bone was found between 75-85% for GI, GII and GIII and percentage above 95% for GIV. At 30 days postoperative GI and GIV showed 95-100% of mature bone tissue; GII and GIII in percentage close to 80-90%. Based on the results and methodology is concluded that fibrin / tranexamic acid glue association has positive action on bone repair.

Influência da aplicação de laser de baixa intensidade no recobrimento radicular associado à técnica de enxerto de tecido conjuntivo em indivíduos fumantes: ensaio clínico controlado randomizado

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

El espacio industrial en Canarias. El tejido empresarial y el territorio en las áreas insulares

[ES] Trabajo de investigación referido a las implicaciones en el territorio del desarrollo de los usos industriales del suelo, atendiendo a las singularidades derivadas de los espacios insulares en el ejemplo de Canarias

Estudio y observación del tejido óseo en hueso de pollo adulto y vacuno

Fil: Casatti, Georgina. Universidad Nacional de Cuyo. Facultad de Odontología

Los migrantes del noroeste hispánico en el Buenos Aires tardo colonial : La construcción de un tejido relacional luego del traslado ultramarino

A fines del siglo XVIII las migraciones de gallegos y asturianos a la ciudad de Buenos Aires se incrementaron. Estos desplazamientos estuvieron condicionados por diferentes factores, que operaron de ambos lados del Atlántico: la instauración de una línea regular de transporte oficial entre La Coruña y Montevideo (los Correos Marítimos); la larga tradición marítima y migratoria de las zonas costeras de Galicia y Asturias; o el desarrollo económico de la capital virreinal, con sus oportunidades de movilidad social ascendente, entre otros. Dentro de Buenos Aires, los oriundos del noroeste hispánico generaron un tejido de relaciones sociales, que incluyó vínculos con paisanos y con el componente nativo de la sociedad de recepción. A lo largo de este trabajo analizaremos esta ambigua dirección de los lazos sociales postmigratorios, a partir del examen de algunas fuentes primarias básicas, tales como las actas matrimoniales, los testamentos o los padrones de habitantes.

Agriculturización, inequidad distributiva y fractura del tejido social

Los cambios operados en la actividad agrícola en nuestro país a lo largo de las últimas dos décadas, identificados genéricamente bajo la denominación de agriculturización, han generado múltiples impactos, muchos de ellos de carácter contradictorio. Así, el crecimiento de la actividad económica, el incremento en los saldos exportables y en los recursos fiscales conviven, entre otras manifestaciones, con la agudización de las tensiones derivadas de la concentración económica, con nuevos impactos e incertidumbres de carácter ambiental, con desequilibrios territoriales crecientes, con la ampliación de la brecha laboral y con el incremento en la inequidad distributiva. Este trabajo presenta los resultados de un análisis exploratorio orientado a pequeñas localidades de la región pampeana, en el cual se visualiza el surgimiento de fuertes signos de fractura del tejido social, derivados del crecimiento de la inequidad distributiva de la riqueza en el interior del espacio rural. Dos tendencias fundamentales constituyen los emergentes de este proceso: 1°) los cambios en los estilos de vida de los sectores relacionados con la actividad agrícola, visibles fundamentalmente en modificaciones en las pautas de consumo (sobre todo entre los jóvenes); y 2°) la heterogeneización de las percepciones de los pobladores sobre la valorización del trabajo en la comunidad. La reconstrucción de estos procesos, escasamente abordados en la literatura académica, se realizó a través de estrategias metodológicas que combinan métodos cuanti y cualitativos, tomando como caso de estudio una pequeña localidad en la Provincia de Santa Fe