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The Nordic Institute of Dental Materials (NIOM) performs several tests to evaluate dental products in the Nordic countries. In the European Union, dental materials are classified as medical devices according to the Medical Devices Directive. In USA, the Food and Drug Administration is the regulatory body for dental products.
These products include crowns, bridges, dentures and other dental products. Dental lab technicians follow a prescription from a licensed dentist when manufacturing these items, which include prosthetic devices (such as denture teeth and implants) and therapeutic devices (such as orthodontic devices).
Many dentifrices have been produced over the years, some focusing on marketing strategies to sell products, such as offering whitening capabilities. The most essential dentifrice recommended by dentists is toothpaste which is used in conjunction with a toothbrush to help remove food debris and dental plaque .
Dental quadrants The dentition is divided into four quarters. The two dental arches form an oval, which is divided into quadrants which are numbered from 1 to 4: [7] Upper right quadrant: upper right first incisor to upper right wisdom tooth; Upper left quadrant: upper left first incisor to upper left wisdom tooth
Toothpaste is used to promote oral hygiene: it is an abrasive that aids in removing dental plaque and food from the teeth, assists in suppressing halitosis, and delivers active ingredients (most commonly fluoride) to help prevent tooth decay (dental caries) and gum disease . [1]
Compomers are resin-based materials like dental composites, and the components are largely the same.. The setting reaction is similarly a polymerisation process of resin monomers (e.g. urethane dimethacrylate) which have been modified by polyacid groups, and is induced by free radicals released from a photoinitiator such as camphorquinone.
Back teeth showing fissure system. Dental caries is an upset of the balance between loss and gain of minerals from a tooth surface. [3] The loss of minerals from the teeth occurs from the bacteria within the mouth, fermenting foods and producing acids, whereas the tooth gains minerals from our saliva and fluoride that is present within the mouth. [3]
Resin-based glass ionomers have two setting reactions: an acid-base setting and a free-radical polymerisation. The free-radical polymerisation is the predominant mode of setting, as it occurs more rapidly than the acid-base mode. Only the material properly activated by light will be optimally cured. The presence of resin protects the cement ...