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Showing result 1 - 5 of 26 essays matching the above criteria.

  1. 1. Survival of Zirconia Implants: A Systematic Review and Meta-Analysis

    University essay from Malmö universitet/Odontologiska fakulteten (OD)

    Author : Parvin Mohseni; Ahmad Soufi; [2023]
    Keywords : dental implant; failure; implant; meta-analysis oral implant; systematic review; zirconia implants;

    Abstract : Aim To assess the clinical outcomes of zirconia implants, namely survival rate and the prevalence of fracture, based on a systematic review of the literature. Material and method An electronic search was conducted in three databases (PubMed, Web of Science, Science Direct), last updated in October 2022. READ MORE

  3. 2. Effect of powder spray drying on catalyst formulation in tablet form

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Kajsa Wahlgren; [2023]
    Keywords : Spray dryer; Catalyst; Powder; Flowability; Chemical engineering; Technology and Engineering;

    Abstract : Heterogenous catalysts consist of a large surface area support material applied with the catalytic active phase, and the activity of a catalyst is often correlated to the surface area per volume. Support materials often need to be processed further to be optimal for specific processes. READ MORE

  4. 3. Effect of Cement Type on Zirconia and Metal-Ceramic Tooth-Supported Crowns – A Retrospective Journal Survey

    University essay from Umeå universitet/Tandläkarutbildning

    Author : Jennifer Nilsson; Mikael Wedin; [2022]
    Keywords : dentistry; prosthodontics; crown; cement; zirconia; porcelain-fused-to-metal;

    Abstract : Background: The golden standard for single unit crowns has for long been porcelain fused to metal (PFM). However, demands for improved esthetic materials has driven the development of zirconia which has increased in popularity due to its eminent mechanical and esthetic properties. READ MORE

  5. 4. Material analysis for a rotating inlet valve : Sliding contact in an oil-free super-critical steam environment

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Author : Johan Samuelsson; [2022]
    Keywords : Mechanical carbon; graphite; carbon graphite; zirconia; steam engine; steam; tribology; friction; wear; stellite; nitronic 60; antimony; carbon; Ni-resist cast iron; waste heat recovery; rotating inlet valve; valve; Mekaniskt kol; gafit; ångmotor; ånga; tribologi; friktion; nötning; gjutjärn; roterande inloppsventil; ventil;

    Abstract : In this thesis, the aim is to study possible tribo-materials for a rotating inlet valve and to find a suitable material combination for the contact. The valve is part of a modern oil-free and high temperature steam engine. Systematic material selection together with tribological tests and wear analyses are performed. READ MORE

  6. 5. Retrospective clinical evaluation of implant-supported zirconia fixed dental prostheses

    University essay from Malmö universitet/Odontologiska fakulteten (OD)

    Author : Imad Al-Ateia; Josef Taleb; [2021]
    Keywords : implantat; peri-implantit;

    Abstract : ABSTRACT  Purpose The aim of the present study was to evaluate the clinical outcomes of implant-supported restorations of zirconia.   Materials and methods This retrospective study included all patients rehabilitated with implant-supported fixed prostheses made of zirconia in a dental clinical private practice, based on data from patients’ dental records. READ MORE