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Zirconia based materials are widely used as dental materials because of their good mechanical properties and aesthetic, but there is a need of enhancing its biological response for clinical use. In that sense, a bioactiv...

Subjects / keywords: Ciencia; Física; General

The cytotoxicity and genotoxicity of novel colloidal silica spheres coated with crystalline or amorphous zirconia (SiO2@ZrO2 cryst or SiO2@ZrO2 am) have been studied in a human osteosarcoma cell line (MG-63), after 24 h ...

Introduction and aims: Additive manufacturing technology has the potential to produce accurate restorations in the field of prosthodontics. This in vitro study aimed to investigate the dimensional accuracy and marginal a...

Monolithic zirconia restorations offer superior mechanic properties and improve indication of non-metallic restorations. Monolithic restorations eliminate bonding and chipping problems mostly seen in zirconia restoration...

Geopolymers are known for its high compressive but low tensile strength due to its brittle nature, which restricts the use of geopolymers as structural material. It is important to enhance their mechanical performance by...

Objectives: To compare the effects of airborne-particle abrasion (APA) and tribochemical silica coating (TSC) surface treatment methods on the shear bond strength of zirconia ceramics systems, resin cements and tooth sur...

Objectives: To investigate the monotonic and fatigue strength of 3D-printed 5 mol% yttria partially stabilized zirconia (5Y-PSZ) and the influences of printing layer orientation and finishing protocol. Methods: Bar-shape...

The morphology of titanium, zirconium, and hafnium nanofilms deposited onto zirconia after annealing in vacuum at 1400, 1500, and 1600°C was studied. Nanofilms show a tendency to fragmentation; for titanium it begins at...

Background/Aim: The aim of this study was to compare the monolithic and layered zirconia crowns by their optical property of translucency, using in vitro and in vivo evaluation methods. Material and Methods: One upper in...

Palladium and cobalt bimetallic catalysts supported on sulfated zirconia (PdCo/SZ), obtained from different precursors of Pd (nitrate and acetylacetonate), were prepared to study their influence on the selective reductio...

Background/Aim: The aim of this study is to compare the impact of CO 2 laser on traditional zirconia and translucent zirconia in terms of the bonding strength to resin cement. Material and Methods: In this in-vitro study...

A green, simple, and fast procedure has been developed for the preparation of quinoxaline derivatives by a condensation of 1,2-diamines with 1,2-dicarbonyl compounds in the presence of zirconium oxide modified with tun...

In this study, Co based catalysts (0.5-5 wt% Co) supported on sulfated zirconia were prepared for NO selective reduction by methane. The effect of Co loading on the catalyst structure, the catalytic activity and stabilit...

The diffusion of all stable lanthanides in calcia stabilized zirconia (CSZ) and in yttria stabilized zirconia (YSZ) was measured. Lanthanide migration enthalpies were calculated using the Mott-littleton approach. The res...

Abstract Background Various designs of dental implants made of zirconium dioxide (zirconia) as an alternative to titanium implants are available as one-piece implant (OPI) or as bone-level or tissue-level two-piece impla...

Nanocrystalline zirconia powders stabilized with varying concentration of yttria (YSZ) were synthesized following urea solution combustion route. Thermogravimetric analysis combined with differential scanning calorimetry...

In this study, hydroxyapatite and 3 mol. % yttria stabilized zirconia–hydroxyapatite (YSZ–HAp) composites were synthesized using the co-precipitation method. The composites were produced with 1, 4, and 7 wt. % of...

Telescopic overdenture is one type of removable denture that uses dual coping system that consists of primary and secondary coping. Retention of telescopic overdenture is obtained from the friction between primary and se...

Starting materials of ZrO2 ? 0 ppm-P, 140 ppm-P and 600 ppm-P were prepared using high-purity ZrO2 and NH4H2PO4. Using Y2O3 as a stabilizer, (ZrO2)0.95(Y2O3)0.05 ceramics were fabricated at a sintering temperature of 140...

Background/Aim: Dentist-technician communication is crucial for a successful working relationship in the healthcare setting that contributes to positive health outcomes. However, the interruption of the dentist and the t...

Tesis de Doctorado En esta tesis se desarrollaron superficies antibacterianas activadas por luz, fabricadas utilizando películas delgadas de zirconia mesoporosa infiltradas con nanopartículas metálicas, específicamen...