O impacto do preparo, da cerâmica e do contato oclusal na distribuição de tensões em facetas

Pós-graduação em Odontologia Restauradora - ICT

Interação do peptídeo antimicrobiano L1A com membrana modelo: efeito do pH e carga da vesícula

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Regulação microambiental de células epiteliais límbicas corneais de coelho expandidas sobre membrana amniótica humana desepitelizada: ênfase para a organização supramolecular dos maiores biopolímeros extracelulares

Pós-graduação em Cirurgia Veterinária - FCAV

Epitelização de enxertos cutâneos em feridas recentes de coelhos tratados com membrana amniótica canina e/ou laserterapia

Pós-graduação em Cirurgia Veterinária - FCAV

Perfil lipídico da membrana plasmática e alterações morfofuncionais de esperamatozóides de garanhões resistentes e sensíveis à criopreservação

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

Resistência de união entre um cimento resinoso e uma cerâmica aluminizada submetida a diferentes tratamentos de superfície

Pós-graduação em Odontologia Restauradora - ICT

Avaliação dos constituintes proteicos do plasma seminal e da membrana plasmática se espermatozóides e sua correlação com a fertilidade de garanhões

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

Regeneração óssea guiada com o uso de membrana de copolímero PLA/PGA em levantamento da membrana do seio maxilar: estudo experimental com análises histomorfométrica e imunoistoquímica

Pós-graduação em Odontologia - FOA

Reabilitação protética implantossuportada em região anterior maxilar com utilização de gengiva artificial cerâmica: relato de caso

The osseointegrated implants created a progress in oral rehabilitation. But this rehabilitation may be complicated by anatomical conditions, mainly in maxillary anterior region, where a higher aesthetic is required. The aim of study was to report one case which the use of angled abutments were necessary to allow the correct positioning of the prosthesis and also the prosthetic reconstruction with gingival-colored ceramic to provide best aesthetic result for patient. The aesthetic and functional results provided greater patient satisfaction with her smile. The correct planning is essential to provide to patient the best aesthetic and functional results, being necessary the use of abutments and gingival-colored ceramic to reach better results. Uniterms: dental implantacion, esthetics, mouth rehabilitation.

Avaliação dos preparos da superfície cerâmica para a colagem de acessórios ortodônticos

The purpose of this study was to evaluate the effects of two conditioning methods used to enhance the shear strength of orthodontic brackets bonded to porcelain surfaces. A total of 18 feldspathic specimens were used. The specimens were divided randomly into two groups (n = 9): group free silane, the porcelain specimens were etched with hidrofuoric acid 10% (Acid Gel-Maquira) for 4 minutes followed by adhesive-primer (Transbond XT) and the metallic brackets (Morelli Roth Light .022" x .030") were bonded with a light-cured microfilled resin (Transbond XT Light Cure Orthodontic Adhesive); group silane, the porcelain specimens were etched with hidrofuoric acid 10% (Acid Gel-Maquira) for 4 minutes followed by silane (Silano Ângelus) for 1 minute, adhesive-primer (Transbond XT) and the metallic brackets (Morelli Roth Light .022" x .030") were bonded with a light-cured microfilled resin (Transbond XT Light Cure Orthodontic Adhesive). All specimens were stored in solution of artificial saliva at ambient temperature for 24 hours. The debonding was done with shear strength through a universal testing machine (DL 500-Emic) calibrated with a fixed speed of 1mm/minute. Statical analysis was performed using the Student t test. The results indicated that in the free silane group the mean bond strength was 9,97 MPA, significantly lower than the silane group, that was 12,38 MPa (p < 0,05). The both groups were effective for bonding, although the silane group had the highest bond strength values.

Avaliação clínica e radiográfica de pacientes submetidos ao levantamento da membrana do seio maxilar

Implant dentistry is a dental specialty which presents great predictability in the rehabilitation at posterior, partially edentulous maxillary areas. Early tooth loss results in significant jaw remodeling. The maxillary sinus lifting followed by implant placement is a predictable technique initially described in 1980. Since then, several different techniques have been investigated varying filling materials and the management of complications in order to provide effective guidance in the rehabilitation of these patients. The current study evaluated ten patients who underwent sinus lifting before implant placement and crown installation. First, a retrospective analysis of the medical records was conducted to obtain information about possible postoperative complications. Clinical and radiographic analyses were performed at baseline and 180 days after surgeries. The sinus lifting with immediate implant placement provided satisfactory outcomes and can be considered a safe procedure. Treatment predictability was demonstrated in 90% of patients and for 86.96% of implants placed. It is important to highlight knowledge of anatomical structures at this area, the use of delicate surgical techniques, and strict patient follow-up.

Caracterização e utilização do resíduo de cerâmica vermelha como material pozolânico em matrizes cimentantes

Pós-graduação em Engenharia Civil - FEIS

Uso da cromatografia gasosa para avaliação da difusão em membrana de Polietileno de Alta Densidade (pead) em contato com hidrocarboneto

The constant petrol fuel leak in gas stations has caused concern in many countries around the world. Those fuels have toxic organic compounds in their composition, like Polycyclic Aromatic Hydrocarbons (PAH), which are harmful to the human health. In this work the efficiency of the protection layer with a High Density Polyethylene (HDPE) membrane of 2.5 mm thickness was evaluated. The study was based in the diffusive process in the intact membrane by a permeameter developed to evaluate the diffusive process. The membrane was putted in the middle of the system to separate two sides: a local soil impregnated with diesel oil (in one side) and pure water (in the other side). The chromatography technique was conducted to evaluate the contamination in the pure water. The analyses were made monthly in a total period of 6 months of research. The results tests show that the membrane was less effective to antracene and naphthalene compounds. Despite that, the results showed that the HDPE membrane is a good alternative to prevent contamination of water and soil by the compounds under study up to one year, based on the performance in the time of study.

Efeito da vinhaça na membrana impermeabilizante usada nos tanques de armazenamento

This work evaluated the effect of vinasse (residue from sugar cane) in high density polyethylene (HDPE) geomembranes having in mind that it is deposited at temperatures of 80-90˚C on the geomembrane in storage tanks. The objective was to evaluate the resistance of the geomembrane in contact with residue in a total period of 4 months. Physical and mechanical tests, and thermogravimetric analysis (TGA) were used to determine degradation of polymer membranes after chemical immersion. In general, the results obtained show that the vinasse affected the geomembranes significantly in some aspects, for instance, the thickness of the material presented a variation of 7.8%. The average values in both directions at yielding showed a significant loss of tensile strength (34.13%) and strain (23.48%) and an increase in the modulus of elasticity (9.63%). At the rupture the behavior presented the same trend: a loss of 32% for tensile strength and 24.4% for the deformation were observed. Tear strength presented small decrease (4.72%) and puncture resistance a increase of 7.9% after immersion of geomembranes. The TGA tests were not efficient to detect evidence of degradation in samples of geomembranes after exposures, but identified problems in the quality of the supplied material.

Lubrificante diluído em água na retificação cilíndrica externa de mergulho em cerâmica avançada

Este trabalho pretende analisar o comportamento da fetificação de cerâmica avançada juntamente com a técnica de MQL. Foram avaliadas variáveis de saída do processo de retificação, tais como comportamento de potência de corte, rugosidade e desgaste do rebolo. Dos resultados de rugosidade obtidos, o MQL feito com lubrificante diluído em água, na proporção de 1 : 1 foi considerado um potencial substituto ao MQL tradicional.