Restoration of frontal teeth of the upper jaw with a new domestic submicron photocomposite: a clinical case presentation

Summary. Today, the population of Ukraine has a high need for dental treatment, in particular in the surgical treatment of carious lesions of the teeth by restoration of integrity of the tooth crown. Over the last 10–15 years we can note a tendency to increase the average patient's requirements for greater aesthetics of fillings and restorations of the frontal and masticatory groups of teeth. During performing modern dental work it has become almost mandatory to make the fillings and restorations as close as possible to the natural transparency of the tooth, to imitate its natural appearance by reproducing a whole palette of shades, cutting edge and microrelief. The appearance of photocomposite materials with a particle size of less than 1 μm, improvement of their grinding technique – obtaining spherical particles, improving the composition of the organic matrix of the material – allowed to develop additional optical characteristics of photocomposites – the «chameleon» effect. This is an optical mimicry of color and transparency of the material when placing it in the structure of the vital or devital tooth. An example of restoration of the frontal group of teeth in a patient with non-carious lesions of hard tissues is described. Teeth treatment was performed by the method of singlelayer restoration with photocomposite material of Ukrainian production «Jen-Radiance NEW». Key words: dentistry, tooth, treatment, restoration, photocomposite, color.

Conducting Tips

Since efficient and communicative gesture enhances good rehearsal technique, this chapter presents twelve conducting tips to encourage an extensive and varied gestural vocabulary, with the goal of eliciting a full range of expressive responses from singers. Additionally, the chapter explores implications for conductors of the “chameleon effect,” the tendency of people to unintentionally mimic the behaviors and expressions of others. From postural alignment to the shape of their lip position, research has shown that singers will unknowingly imitate a conductor’s physical behaviors. The chapter concludes with a discussion of the pros and cons of conducting concerts completely from memory.

Temporal Aspects of the Chameleon Effect and Hospitality: The Link Between Mimicry, Its Impact, and Duration

In an experiment conducted in natural settings (in a restaurant), we explore the uninvestigated link between mimicry, its impact on hospitality, and the time during which the mimicry takes place. Under particular experimental conditions, the waitress either did not verbally mimic the customer, mimicked the customer only at the initial stage of the interaction, only at the final stage of the interaction, or at both the initial and the final stage of the interaction. The tip left by the customer and its amount were the indicators of the hospitality experienced throughout the time spent in the restaurant. The outcome was that both indicators of noticeable hospitality were the highest where the verbal mimicry was applied twice.

Identity or Prestige: The Chameleon Effect on EFL Pronunciation

Although there is a current tendency to deal with English as an international language, EFL pronunciation seems to be motivated by conceptions on identity and prestige. In this respect, the following study investigates the effect of identity and/or prestige on EFL speakers' English speech (or usage) in two different settings. Male and female participants from Kuwait University (63 in total), were given debate topics to engage in. Both their meetings and actual debates were recorded. The participants also filled a short questionnaire. The recordings were analyzed using Praat, while the questionnaire results were obtained using SPSS. The results show that the EFL speakers use different accents and various realizations of English consonants as a reflection of what is known as the Chameleon Effect. This study aims at helping teachers understand the difference between the speakers’ language knowledge and their actual performance.