The aim of this in vitro study was to observe the effect of hydrofluoric acid (HF) on the surface of two glass ceramics for Cerec and to compare it with the effect on a conventional glass ceramic. Discs were cut from a feldspathic ceramic block (VitaMKII) and from a leucite reinforced glass ceramic (IPS EMPRESS CAD) for Cerec. 5% and 9% HF concentrations were used during 1 min and 2 min each. A...

Objective: This study aimed to investigate the effects of polishing system on color stability, surface roughness, and hardness resin composites in presence absence accelerated artificial aging (AAA).
 Methods: Six (Universal Restorative 200, G-Aenial Anterior, Ceram-X Duo, Admira, IPS Empress Direct, Clearfil Majesty Esthetic) were evaluated. Thirty disc-shaped samples prepared for each co...

The paper analyzes the representations of women’s health and disease associated with epidemic smallpox in Habsburg Monarchy during reign empress Maria Theresa, which is thematized Croatian writer Marija Jurić Zagorka’s novel cycle Grička vještica (The Witch Grič). Health are considered as gendered experiences and, accordingly, gender coding strategies investigated. considers role discourses inf...

This study compared the fracture toughness values (KIC), which were derived from simplified techniques: the indentation fracture (IF), the indentation strength (IS), and fractographic approach to that from a standard testing using surface cracks in flexure (SCF). Forty bar specimens, twenty IPS Empress(®) Esthetic and twenty IPS e.max(®)Ceram were prepared. Ten specimens in each material were t...

Materials and methods: A total of 30 restorations (twelve subjects), 18-38 year olds with class IV carious upper anterior teeth were included, divided into three groups. Each group (n=10 restorations) was randomly restored with the same restoration material type; Beautifil II nano hybrid composite resin (Shofu Dental Corporation, USA), IPS Empress Direct nano hybrid composite resin (Ivoclar Viv...

The article is dedicated to the issue of pediatric mortality at the Moscow Imperial Orphanage founded on September 1, 1763, by decree of Empress Catherine II. The authors present results of an analysis of medical statistical data and give an objective assessment of the medical service provided by the Moscow Orphanage in order to understand the positive or the negative role of the Orphanage in t...

Palace of Desire is an excellent costume TV series directed by Li Shaohong. There are two screenwriters named Zhen Chong and Wang Yao. They used unique writing strategies to narrate the story Princess Tai Ping Empress Wu Zetian who trapped in a delimma power emotion during special period Tang Dynasty, showing confusion women feudal society ancient China. This article will use theory feminist st...