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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They found that the displacements of maxillas did not coincide with in vivo measurements.
Holographic interferometry method for assessment of static load stress distribution in dog mandible
Braz Oral Res ; Therefore, it is important interfermetria emphasize that macerated bone specimens have a different behavior when interferomeetria to that of fresh bones. For example, to study occlusal force dissipation, it is possible to verify the course of the force lines in the entire craniofacial complex, in addition to the underlying bone.
The results of this investigation did not converge with the findings of Kannan 19who found little difference in magnitude in the tensions developed in vivo and in dry monkey skulls, measured by means of load cells. In a previous study 10moisture in fresh dog skulls may have influenced their results in comparison to macerated innterferometria, by making them less rigid and leading to a less pronounced displacement of bone.
Effect of different prosthetic restorative materials on occlusal load distribution.
Verh K Acad Geneeskd Belg ; In the fixed and macerated specimens, the direction of fringes remained unchanged; 3 Spacing between the fringes was smaller near the point of load application and increased progressively along the mandible towards the fixed extremity; 4 The pattern of fringes was also different in direction; in fixed and macerated specimens the fringes showed greater inclination than in fresh hemi-mandibles, meaning that they underwent torsion.
The laser was emitted continually by a direct current power supply. Photoelastic analysis of stress distribution on parallel and angled implants after installation of fixed prostheses. Eur J OrthodFresh hemi-mandibles were thus seen to transmit less tension than the corresponding fixed and macerated samples. The hemi-mandible was subjected to a g static load. Holographic interferometry method for assessment of static load stress distribution in dog mandible.
The experiment was carried out in a totally dark, draft-free environment. Load transmission evaluation by removable distal-extension partial dentures using holographic interferometry. Holographic interferometric double exposition method. Additionally, another factor that may have aided tension dissipation is the hardness of the bone.
INTERFEROMETRIA – Definition and synonyms of interferometria in the Portuguese dictionary
The dry skull model in orthodontics. The experiment bolografica immediately after euthanasia of the animals, and the presence of fresh fibrous connective tissue may have dampened the action of the applied force. The hypothesis was that the use of macerated bone like a model to study the stress distribution by means of holographic method could produce different results in comparison to fresh bone specimens.
All components were secured on an optical table buffered by compressed air Newport in order to avoid vibrations. Holografics spite of these findings, macerated skulls are still used as study models The mandibles of 6 dogs Canis familiars aged approximately 4 years and weighing 12 kg were used. The reflected beam reference beam interacted with the object beam to produce a hologram on the film.
Adachi I ; Jose E. Calcif Tissue Int ; The use of mathematical programs or artificial models of resin material to simulate real conditions is not particularly ideal.
Meaning of “interferometria” in the Portuguese dictionary
Services on Demand Journal. The incidence of laser light upon the developed film showed the image of the mandible with a pattern of fringes, caused by the interference produced by superimposing the two holograms. Furthermore, the method of attachment of this device to the surface of the object under study may also influence its performance.
Several load cells would be necessary to produce an overall mapping of the distribution of tensions. When activated, the laser illuminated the surface of the tension-free hemi-mandible and was reflected object beamreaching the holographic film.
J Osaka Dent Univ ; The value of the macerated skull as a model used in orthopaedic research.
Brazilian Society for Dental Research; Two-dimensional photoelastic stress analysis of traumatized incisor. Strain and stress analysis by holography and speckle interferometry.
Thus, by analyzing the number of fringes and the displacement produced, one can refer to the direction of the tensions. Govaert L, Dermaut L.
Finite elements study of the FlexiPost and FlexiFlange post system in a maxillary central incisor. Yamada H, Evans FG.
The holographic images showed that: 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 2respectively.
Shchepinov V, Pisarev VS. The mandibular ramus was fixed in a metal box by screws and self-polymerizing acrylic resin was poured into the box. This method allows the detection of minute movements of the order of nanometers, as well as overall qualitative and quantitative visualization of the trajectory of the tensions generated upon load application. It does not require mathematical, virtual or artificial simulation of the evaluated object, as in the finite element or photoelasticity methods.
Given that the process of maceration leads to bone drying and loss of fibrous connective tissue, a question remains as to whether the results obtained with macerated skulls could be transferred to the holografcia vivo situation.