Mestrado Profissional em Clínica Odontológica
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Navegando Mestrado Profissional em Clínica Odontológica por Autor "Batitucci, Eduardo"
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- ItemAvaliação da resistência ao cisalhamento por extrusão, push-out, de pinos de fibra de vidro cimentados à dentina radicular de dente bovinos com diferentes cimentos resinosos - estudo "in vitro"(Universidade Federal do Espírito Santo, 2010-12-17) Daleprane, Bruno; Batitucci, Maria Hermenegilda Grasselli; Batitucci, Eduardo; Paulillo, Luis Alexandre Maffei Sartini; Pazinatto, Flavia BittencourtDue to the need for knowledge of the strength of the union of the agents of the resin cements used to-retain the intracanal post, this in-vitro study aimed to evaluate the union of different resin cements to the root canal walls, from the adhesive cementation of fiber glass post, verifying the union by the resistance to the “push-out” test in different regions of the canal. For this study, we used roots of 36 bovine teeth divided into three groups, which were cemented Fiberglass Reforpost no 3 pins. Group A: Panavia F / ED Primer, Group B: RelyX ARC/ Scotchbond Multi-Purpose Plus and Group C: RelyX Unicem. After cementation, specimens were prepared for mechanical testing of “push-out” in different radicular thirds. For statistical analysis, we used the Kruskal Wallis method and for comparing means and to identify groups that differ in each third the Mann Whitney test was used. It was found that for all groups, the cervical third bond strength was similar, whereas for the middle third of the group B and C were statistically similar and both higher than in Group A, and the apical the Group B was superior to both Group A and the lower values of Group C. When comparing this force within each group, it observed that Group C had a uniform bond strength at different depths of root, since the Group A has the best value in the cervical third, and the middle thirds apical and similar to group B and the third cervical was superior to both apical and similar to a medium (p≤0,05). We conclude with a study that the type of cement used influenced the bond strength. Those cementation systems requiring treatment prior to cementation dentin, there was influence the depth of the canal, giving rise to reduced strength of adhesion to approaching the most the apical region, unlike that of cement adhesive presented value for uniform adhesion.
- ItemEfeito do tratamento de superfície na resistência de união à microtração de cimentos resinosos à cerâmica In Ceram Alumina(Universidade Federal do Espírito Santo, 2009-12-18) Peixoto, Letícia Monteiro; Batitucci, Eduardo; Batitucci, Maria Hermenegilda Grasselli; Alto, Raphael Vieira Monte; Sanglard, Luciana FariaThe aim of this in Vitro study was to evaluate the microtensile bond strength and the fracture mode of In Ceram Alumina (Vita Zahnfabrik) subjected to resin bonding with different surface treatments. Twenty blocks of ceramic In Ceram Alumina and resin composite Filtek Z350 (3M/ESPE) were made with dimensions of 7mm x 7mm x 5mm. The ceramic blocks were divided into four groups according to the surface treatment and cement used: grupo 1) Al2O3 sandblasting and bonding with Rely X ARC (3M ESPE), grupo 2) Rocatec System sandblasting (3M ESPE) and bonding with Rely X ARC, grupo 3) Al2O3 sandblasting and bonding with Panavia F (Kuraray), grupo 4) Rocatec System sandblasting and bonding with Panavia F. The samples resin/cement/ceramic were sectioned in a cutting machine Labcut 1010 to obtain sticks with a cross-sectional area of ± 1mm2 They were stored in distilled water (7days/370C) and the microtensile bond strength was recorded in a universal testing machine Emic at a crosshead speed of 0.5mm/min. The failure types were noted in a scanning electron microscopy. The results (MPa) were submitted to ANOVA and Tukey’s test (p<0.05): grupo 1-15,71, grupo 2-24,64, grupo 3- 21,86, grupo 4- 28,19. There was no statistical difference between group 2 and group 3. All failures were mixed. It was concluded that the tribochemical system increase the bond strength between resin cements (Panavia F and Rely X ARC) and In Ceram.
- ItemEstudo comparativo da desadaptação marginal de infraestruturas metálicas para próteses sobre implantes, após soldagem a laser e soldagem convencional(Universidade Federal do Espírito Santo, 2009-09-25) Peçanha, Marcelo Massaroni; Menezes, João Carlos Padilha de; Batitucci, Eduardo; Nakamae, Atlas Edson MoleirosThe aim of this study is to compare the marginal inaccuracy of Co-Cr implantsupported frameworks after conventional soldering or laser welding procedures. Two externally hexed implants with 4.1 mm platform diameter (Conexão Sistema de Prótese,Brazil) were fixed in an aluminum block. The framework wax-up was produced using two Co-Cr UCLA cylinders positioned in each implant and a pre-fabricated wax bar. The implant frameworks were conventionally casted using Co-Cr alloy. Twenty frameworks were produced sectioned in two halves and assigned to two different groups: in Group 1 frameworks were re-joined using laser-welded and in group 2 frameworks were re-joined using conventional soldering procedures. The one screw test was used when assembling prosthetic frameworks to the implants. An optical microscope with precision of 0.001 mm was used to measure the marginal misfit at the prosthetic abutment/implant interface. The measurements were analyzed before and after the soldering/welding procedures in each group. The analyses were performed in three points of each faces: V, L and D at each implant. Marginal misfit averages (µm) were calculated for each face and each framework in both groups after soldering/welding.Results were treated with Mann-Whitney test (p<0.05). Mean fit values (in µm) before soldering process were equal to zero for both groups. After soldering processes were performed, it was observed that, in group 1 the mean vertical misfit medium value were 12µm as long as in group 2 the mean values were 38µm. Within the limits of this study it was possible to conclude that the laser welding procedure may provide a more accurate fit between implants and Co-Cr prosthetic frameworks compared to the conventional soldering technique.