Halitosis (bad breath) is a common condition socially crippling vast parts of the population that results mainly from the malodorous compounds volatile sulfur compounds, by products of oral bacteria. In the present doubled blinded randomized study we have evaluated 75 subjects with halitosis. The participants were treated with or without abrasive microcapsules containing Zinc gluconate 0.5%, pr...

Technological advancement, on the one hand, makes Electrical Discharge Machining (EDM) much faster. One example of that is the presence of Wire Electrical Discharge Machining – High Speed (WEDM-HS) machine, which makes the material removal rate as high as 80 mm/min. On the other hand, it also make Abrasive Waterjet (AWJ) achieve much better quality surface and tighter tolerance. As a result, th...

Introduction: Low resistance of composite resins to abrasion is a primary concern in the application of these materials for posterior restorations which are prone to high occlusal loads. This study compared the wear resistance of three types of composites. Methods: In this laboratory experiment, five specimens of each of the three types of composites (z250, Heliomolar, Opallis) were prepared...

objective: the main purpose of this study was to develop a simple reproducible system to compare abrasive effects of three different toothpastes. materials and methods: a specific mold was used to fabricate 37 samples made of po-lymethylmethacrylate. the samples were stroke by toothbrushes connected to a v8 cross brushing machine in a solution of fluoridated toothpastes and distilled water. the...

A water jet machining is an industrial tool capable of cutting a wide variety of materials using a very high-pressure jet of water, or a mixture of water and an abrasive substance. This paper addresses the concept of the Intelligent knowledge base system (IKBS) for optimization of product design and manufacturing process for water jet machining in computer based concurrent engineering environme...

Magnetic abrasive finishing can be classified as a non-traditional super finishing method for finishing surfaces with different shapes and working materials like flat plates, shafts, bearings parts, screws, tubes and many other mechanical parts that need good surface finishing properties. MAF is effective in polishing, cleaning, deburring and burnishing metal parts. The most important parameter...

OBJECTIVE To test the durability of sealants applied for prevention of erosive dentine mineral loss under erosive/abrasive conditions. METHODS Forty-eight bovine dentine samples doped with (32)P were randomly allocated to four groups (1-4). All samples performed a de- and remineralizations pre-cycling (6 × 1 min erosion in HCl: pH 3.0, mean time and overnight immersion in artificial saliva) f...

Chemical mechanical polishing (CMP) has emerged as the planarization technique of choice in both front-end (STI) and back-end (ILD) integrated circuit manufacturing. Conventional CMP processes utilize a polyurethane polishing pad and liquid chemical slurry containing abrasive particles. More recent work has examined the use of a fixed abrasive CMP pad [1], in which abrasive material is embedded...