RESUMEN
<p><b>AIM</b>To evaluate the interactive effects of different self-adhesive resin cements and tribochemical treatment on bond strength to zirconia.</p><p><b>METHODOLOGY</b>The following self-adhesive resin cements for bonding two zirconia blocks were evaluated: Maxcem (MA), Smartcem (SM), Rely X Unicem Aplicap (UN), Breeze (BR), Biscem (BI), Set (SE), and Clearfil SA luting (CL). The specimens were grouped according to conditioning as follows: Group 1, polishing with 600 grit polishing paper; Group 2, silica coating with 110 microm Al2O3 particles which modified with silica; and, Group 3, tribochemical treatment--silica coating + silanization. Specimens were stored in distilled water at 37 degrees C for 24 hours before testing shear bond strength.</p><p><b>RESULTS</b>Silica coating and tribochemical treatment significantly increased the bond strength of the MA, UN, BR, BI, SE and CL to zirconia compared to #600 polishing. For both #600 polished and silica coating treatments, MDP-containing self-adhesive resin cement CL had the highest bond strengths to zirconia.</p><p><b>CONCLUSION</b>Applying silica coating and tribochemical treatment improved the bond strength of self-adhesive resin cement to zirconia, especially for CL.</p>
Asunto(s)
Humanos , Compuestos de Aluminio , Química , Óxido de Aluminio , Química , Bisfenol A Glicidil Metacrilato , Química , Resinas Compuestas , Química , Recubrimiento Dental Adhesivo , Métodos , Grabado Dental , Métodos , Materiales Dentales , Química , Fluoruros , Química , Ensayo de Materiales , Metacrilatos , Química , Microscopía Electrónica de Rastreo , Polietilenglicoles , Química , Ácidos Polimetacrílicos , Química , Poliuretanos , Química , Cementos de Resina , Química , Resistencia al Corte , Silanos , Química , Compuestos de Silicona , Química , Dióxido de Silicio , Química , Estrés Mecánico , Propiedades de Superficie , Ácidos Tricarboxílicos , Química , Circonio , QuímicaRESUMEN
A fiber-reinforced composite inlay-onlay FPD was used for a single posterior tooth replacement in a patient refusing implant for psychological reasons. The FRC-FPD was made of pre-impregnated E-glass fibers [everStick, StickTeck, Turku, Finland] embedded in a resin matrix [Stick Resin, StickTeck, Turku, Finland]. The unidirectional glass fibers were used to make a framework structure with high volume design placed in the pontic [edentulous] region. To reproduce the morphology of natural teeth, the framework structure was then veneered with Gradia [GC, Tokyo, Japan]