This study evaluated the surface of different types of fiber posts after cutting and investigated whether different cutting procedures can affect the integrity of the posts. Six types of fiber posts were selected for this study (Carbon Fiber Posts, Quartz Fiber Posts, Aesthetic Posts, Aesthetic Plus Posts, Translucent Posts, Dentatus, FRC Postec Posts). Fifteen posts of each type were studied. ...

In different fields like decision making, psychology, game theory and biology, it has been observed that paired-comparison data like preference relations defined by humans and animals can be intransitive. The relations may resemble the well-known game of rock-paper-scissors. In the game, rock defeats scissors and scissors defeat paper, but rock loses to paper. Intransitive relations cannot be m...

Instruments.-Separator, conjunctival forceps and scissors, Lungard or von Graefe knife, iris spatula 2 mm. wide, Hess iris forceps, iris scissors (de Weckers), and scleral scissors. Instead of the ordinary iris spatula I use a special one provided with a small guard projecting for 1 mm. and situated 10 mm. from its tip (Figure). The purpose of this modification is to prevent the spatula from en...

Introduction: A bilateral scissors-bite is an uncommon malocclusion and its treatment is difficult. At younger age, it can be treated nonsurgically. Case Presentation: This case report describes successful treatment of a class II division 2 malocclusion with bilateral scissors-bite by fixed appliance. Treatment was completed with the aid of a modified lingual arch, constricted transpalatal arch...

INTRODUCTION Ultrasonic energy is a mainstay in the armamentarium of surgeons, providing multifunctionality, precision, and control when dissecting and sealing vessels up to 5 mm in diameter. Historically, the inability to seal vessels in the 5-7 mm range has been perceived as an inherent limitation of ultrasonic technology. The purpose of this study was to evaluate sealing of vessels up to 7 m...

The SCISSORS method for approximating chemical similarities has shown excellent empirical performance on a number of real-world chemical data sets but lacks theoretically proven bounds on its worst-case error performance. This paper first proves reductions showing SCISSORS to be equivalent to two previous kernel methods: kernel principal components analysis and the rank-k Nyström approximation ...

This paper proposes the virtual scissors system using virtual hands. Users can cut virtual paper with their own hands. The purpose of this system is to make it easy to implement different tools by only changing parameters in software. Other purpose is to make system with small-scale input and output devices for general applications, for example, only using thin haptic information and force feed...

In this paper, we describe an acceleration technique for the semi-automatic image segmentation algorithm, intelligent scissors. Using intelligent scissors, user can accurately and interactively extract the object from the digitized image. However, the original algorithm suffers from slow performance when large images are treated. In practice, pixels within the non-edge regions are seldom involv...

Understanding the mechanisms allowing the maintenance of biodiversity is a central issue in biology. Evolutionary game theory, where the success of one species depends on what the others are doing, provides a promising framework to investigate this complex problem. Experiments on microbial populations have shown that cyclic local interactions promote species coexistence. In this context, rock-p...