We evaluated the effect of water storage on fluoride release and mechanical properties of compomer restorative material. Fluoride release was recorded using a specific fluoride electrode. Flexural properties and fracture toughness were measured using a universal testing machine. Vickers hardness was measured using a micro-hardness tester. There was initial burst of fluoride release up to 1 w, w...

The current dental materials were improvised to make them smarter. use of these smart such as, ceramics, composites, amorphous calcium phosphate releasing pit and fissure sealants, compomers, resin-modified glass ionomer, etc. other as impression material, orthodontic shape memory alloys, suture, burs, Has revolutionized dentistry. quest for an ideal restorative material leads the discovery a n...

The aim of this study was to assess the effect of toothbrushing with toothpastes having different relative dentine abrasivity (RDA) and toothbrushes having different bristles hardness on different composite resins, compomers and traditional glassionomer cements by surface roughness evaluation. All the samples were evaluated regarding the surface roughness using roughness checker (Taylor Hobson-...

OBJECTIVE The purpose of this study was to evaluate the clinical performance of a new colored compomer material, Twinky Star, in primary molars. SUBJECTS AND METHODS Eighty class II restorations were placed in a total of 36 subjects and the clinical success of the restorations was evaluated after 12 months based on modified US Public Health Services criteria. RESULTS The failure rate of the...

Many choices are available to the practitioner of restorative dentistry for children. With the introduction of several new classes of restorative materials in recent years, some confusion has been created about what these materials are, making it difficult to identify their appropriate clinical use. This paper reviews glass-ionomer materials, resin-modified (reinforced) glass ionomers, compomer...

Fluorine polymers, commonly referred to as fluoropolymers, can greatly enhance the properties of coatings used in modern industrial, household and construction products. The qualities of fluoropolymer resins and oligomeric additives make them an ideal solution for applications requiring a high resistance to solvents, acids and bases, and most importantly an ability to significantly reduce frict...

BACKGROUND To measure the amounts of fluoride released from fluoride-containing materials, four glass ionomer cements (Fuji IX, Fuji VII, Fuji IX Extra and Fuji II LC), a compomer (Dyract Extra) and a giomer (Beautifil) were used in this study. METHODS Twenty cylindrical specimens were prepared from each material. The amount of released fluoride was measured during the first week and on the d...

We investigated the influence of periodicity, misalignment, and disorder on the magnetic resonance gap of split-ring resonators (SRRs) which are essential components of left handed-metamaterials (LHMs). The resonance of a single SRR which is induced by the split is experimentally demonstrated by comparing transmission spectra of SRR and closed ring resonator. Misaligning the SRR boards do not a...