Interferometria Holografica Digital – Download as PDF File .pdf), Text File .txt) or read online. Esta basado en el estudio sobre la Interferometria Holografica. Gesualdi, M.R.R. () Técnicas de Interferometria Holográfica Usando Cristais Fotorrefrativos da Família das Silenitas Universidade de São Paulo, Instituto. Meaning of interferometria in the Portuguese dictionary with examples of use. Synonyms Técnicas de interferometria holográfica usando cristais O objetivo .
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After initial holograms were taken, 12 fresh hemi-mandibles were assigned to 2 groups: Additionally, another factor that may have aided tension dissipation is the hardness of the bone. Fresh hemi-mandibles were thus seen to transmit less tension than the corresponding fixed and macerated samples. In fact, stress transmission in the experimental conditions was twice as large as in the control group. Dermault LR, Beerden L. The reflected beam reference beam interacted with the object beam to produce a hologram on the film.
All components were secured on an optical table buffered by compressed air Newport in order to avoid vibrations. The findings of this investigation suggest that the use of dry specimens in research and the inference of their results for an in vivo situation must be conservative.
However, in the fixed and macerated specimens, the direction of the fringes underwent no marked change, but rather remained constant, with tooth and bone behaving as a single body.
The reconstructed image of the hologram contains most of the information of the object.
INTERFEROMETRIA – Definition and synonyms of interferometria in the Portuguese dictionary
The holographic images showed that: Therefore, it is important to emphasize that macerated bone specimens have a different behavior intefferometria compared to that of fresh bones. Because of the short time of formalin fixing, significant changes in the biochemical composition of the bone tissue may not have occurred.
The laser beam had an output power of 30 mW and nm wavelength. In a previous study 10moisture in fresh dog skulls may have influenced their results interfrrometria comparison to macerated skulls, by making them less rigid and leading to a less pronounced displacement of bone.
They stated that formalin fixing causes agglutination of collagenous fibers. A difference in the direction of stress transmission was also observed.
The hypothesis was that the use of macerated bone like a model to study the stress distribution by ohlografica of holographic method could produce different results in comparison to fresh bone specimens. The importance of humidity in the in vitro study of the cranium with regard to initial bone displacement after force application.
Qualitative analysis of stress distribution in tooth-implant and implant-supported prosthesis by means of holographic interferometry method. The dry skull model in orthodontics. Quantitative Analysis Data relative to the comparison between fresh and fixed specimens as well to the comparison between fresh and macerated specimens are presented on Tables 1 and 2 hlografica, respectively.
Verh K Acad Geneeskd Belg ; Strength of biological materials. The following devices were set upon the holographic table: The film was developed and fixed.
When developed and suitably exposed to laser light, this hologram reconstructs a three-dimensional image of the object. The hemi-mandibles holograafica placed in such a way that load incidence would be at the incisal edge of the canine, simulating occlusion with the opposing tooth. How to cite this article. After sedation and euthanasia of the animals, the mandibles were surgically removed and all the surrounding soft tissues skin, mucosa, ligaments, muscles and gingival tissue were removed.
Adachi I ; Jose E.
It is also known that the force is directly proportional to the displacement Hooke’s lawi. Braz Oral Res ; J Osaka Dent Univ ; A laser is needed to produce a coherent, monochromatic light beam. This method, however, is not as accurate as holographic interferometry because it uses only the object beam to form the image.
All of these techniques have advantages and disadvantages.
Meaning of “interferometria” in the Portuguese dictionary
Eur J OrthodHolography also allows tension distribution analysis along all the sample extension. In spite of these findings, macerated skulls are still used as study models Strain and stress analysis by holography and speckle interferometry.
In order to have a more accurate model, the use of natural anatomic specimens is recommended. The holographic interferometry method was efficient in quantifying and qualifying tension transmission.
Holografics does not require mathematical, virtual or artificial simulation of the evaluated object, as in the finite element or photoelasticity methods. Stress analysis of fresh and macerated dog mandibles. The use of mathematical programs or artificial models of resin material to simulate real conditions intrrferometria not particularly ideal.