Raquel Castillo Oyagüe

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OBJECTIVES To evaluate the hydrolytic stability of different dual-cure resin cements when luted to zirconia ceramic. METHODS Eighteen cylinder-shaped zirconia blocks (Cercon Zirconia, Dentsply) were conditioned with: Group 1, no treatment; Group 2, sandblasting (125microm alumina-Al(2)O(3)-particles); Group 3, tribochemical silica coating (50microm(More)
This study evaluated the influence of scanning method, abutment position, and preparation angle on the vertical seal of three-unit posterior zirconia structures. Sixty differently angled metallic models were machined to receive 30 bridge frameworks. For each preparation type, half of the structures were waxed-up and digitized, whereas the other half were(More)
OBJECTIVES This study aimed to evaluate the vertical misfit and microleakage of laser-sintered and vacuum-cast cement-retained implant-supported frameworks. METHODS Three-unit implant-fixed structures were constructed with: (1) laser-sintered Co-Cr (LS); (2) vacuum-cast Co-Cr (CC); and (3) vacuum-cast Pd-Au (CP). Every framework was luted onto 2(More)
This study evaluated the vertical discrepancy of implant-fixed 3-unit structures. Frameworks were constructed with laser-sintered Co–Cr, and vacuum-cast Co–Cr, Ni–Cr–Ti, and Pd–Au. Samples of each alloy group were randomly luted in standard fashion using resin-modified glass-ionomer, self-adhesive, and acrylic/urethane-based cements (n = 12 each).(More)
OBJECTIVES To evaluate the bond stability of resin cements used for luting alumina-based all-ceramic dental restorations. BACKGROUND DATA Although different pretreatments may be applied on alumina to improve bond strengths, any previous study investigated the bond stability of resin-based cements luted to laser-irradiated alumina. METHODS 64 sintered,(More)
OBJECTIVES To evaluate the influence of the alloy type and the associated investing and casting techniques, on the marginal adaptation of bridge structures luted onto prefabricated implant abutments. METHODS Thirty frameworks for three-unit posterior-lower bridges were waxed and cast (10 of cobalt-chromium, 10 of titanium and 10 of palladium-gold). Each(More)
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