996 resultados para Oda III 30
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Influence of morphological variables in photoelastic models with implants submitted to axial loading
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Purpose: This study used 12 photoelastics models with different height and thickness to evaluate if the axial loading of 100N on implants changes the morphology of the photoelastic reflection. Methods: For the photoelastic analysis, the models were placed in a reflection polariscope for observation of the isochromatic fringes patterns. The formation of these fringes resulted from an axial load of 100N applied to the midpoint of the healing abutment attached to the implant with 10.0mm x 3.75mm (Conexão, Sistemas de Próteses, Brazil). The tension in each photoelastic model was monitored, photographed and observed using the software Phothoshop 7.0. For qualitative analysis, the area under the implant apex was measured including the green band of the second order fringe of each model using the software Image Tool. After comparison of the areas, the performance generated by each specimen was defined regarding the axial loading. Results: There were alterations in area with different height and thickness of the photoelastic models. It was observed that the group III (30mm in height) presented the smallest area. Conclusion: There was variation in the size of the areas analyzed for different height and thickness of the models and the morphology of the replica may directly influence the result in researches with photoelastic models.
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Aim: To assess the influence of cervical preparation on fracture susceptibility of roots. Material and methods: During root canal instrumentation, the cervical portions were prepared with different taper instruments: I: no cervical preparation; II: #30/.08; III: #30/.10; IV: #70/.12. The specimens were sealed with the following filling materials (n = 8), A: unfilled; B: Endofill/gutta-percha; C: AH Plus/gutta-percha; D: Epiphany SE/Resilon. For the fracture resistance test, a universal testing machine was used at 1 mm per minute. Results: anova demonstrated difference (P < 0.05) between taper instruments with a higher value for group I (205.3 +/- 77.5 N) followed by II (185.2 +/- 70.8 N), III (164.8 +/- 48.9 N), and IV (156.7 +/- 41.4 N). There was no difference (P > 0.05) between filling materials A (189.1 +/- 66.3 N), B (186.3 +/- 61.0 N), C (159.7 +/- 69.9 N), and D (176.9 +/- 55.2 N). Conclusions: Greater cervical wear using a #70/.12 file increased the root fracture susceptibility, and the tested filling materials were not able to restore resistance.
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1. Kříž u potoka. 4. vyd. 1900.--2. Zvonečková královna. 4. vyd. [n.d.].--3. Vesnický román.--4. Černý Petříček.--5. Kantůrčice.--6. Pod starými krovy.--7. Nemodlenec.--8. Kresby z ještědí.--9. První Češka.--10. Ze staré Prahy.--11. Prostá mysl, I. Řada obrázků z poještědí.--12. Ohlasy z roku 1848.--13. Frantina.--14. Upomínky.--15. Prostá mysl, II. Povídky vesnické.--16. Na úsvitě.--17 Romanetta z Ještěda, I.--18. Poslední paní Hlohovská.--19. Tendenční povídky pro náš lid.--20. Romanetta z Ještěda, II.--21. Novelly.--22. Miláček lidu svého.--23. Z rodinných podání.--24. Časové ohlasy, I.--25. Pověsti z Ještěda.--26. Novelly, II.--27. Láska k básníkovi.--28. Z let probuzení.--29. Novelly, III.--30. Z literárn\biho soukromí a drobné práce.
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Gestión del conocimiento
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En la Cub.: Organizan los CEPs de Arag??n, Rioja y Navarra y el Instituto de la Mujer en Zaragoza y colaboran: Direcci??n Provincial del MEC. Diputaci??n Provincial de Zaragoza. Diputaci??n General de Arag??n. Caja de Ahorros de la Inmaculada. Concejal??a de Bienestar Social del M.I. Ayuntamiento de Ejea.