AIMS The aims of this study were to evaluate the effect of various finishing and polishing procedures on the surface roughness of six different composite resin materials (Artemis Enamel, TPH Spectrum, Filtek A-110, Filtek Supreme Enamel, Solitaire 2, and Filtek P-60) as well as to evaluate the effectiveness of the surface sealant application (BisCover) on the surface roughness after finishing a...

INTRODUCTION Hard and temperature resistant materials are used for mold manufacturing of optical glass lenses. These materials are not machinable by ultra precision diamond milling and turning processes. For example hardened steel or tungsten carbide can be ground in optical quality regarding shape but additional polishing is necessary to guarantee the high requirements for optical surface qual...

The finishing and polishing of composite materials affect the restoration lifespan. The market shows a variety of finishing and polishing procedures and the choice among them is conditioned by different factors such as the resulting surface roughness. In the present study, 156 samples were realized with three composite materials, -microfilled, nanofilled and silorane-, and treated with differen...

Introduction: Polishing after scaling and root planing provides a smoother tooth surface improves patient convenience. Recently, novel polishing system using the air-driven high-pressured device is introduced, but advantage over conventional still questionable. This article aims to provide comprehensive literature study regarding dental by comparing roughness air systems. To conduct this review...

Slurry is widely used in polishing difficult-to-machine materials. However, it accompanied with some issues, such as the agglomeration of abrasives and high disposal cost. Although using fixed abrasive grains instead slurry can solve these problems wear loading grinding stones, which result decrease material removal rate (MRR), also need to be solved. Many researches have been conducted on self...

Influences of two different sample preparation methods, mechanical polishing and plunge cutting, on nanoindentation behavior of a Zr-based bulk metallic glass were studied. Mechanical polishing suppresses the serrated flow but promotes the creep. In contrast, plunge cutting promotes the serrated flow but suppresses the creep. However, hardness and elastic modulus obtained from these two methods...

PURPOSE Dental professionals suffer from a high prevalence of work-related musculoskeletal disorders (MSD). Dental hygienists in particular have a high prevalence of pain in the forearms and hands. The objective of this study was to compare 1 cordless handpiece to 2 corded handpieces during simulated tooth polishing in terms of the muscle loads (recorded as electromyography (EMG) activity), dur...

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