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The FDI World Dental Federation notation ("FDI notation" or "ISO 3950" [1]) is widely used by dental professionals internationally to identify and describe a specific tooth. The FDI notation uses a two-digit numbering system in which the first digit represents a tooth's quadrant and the second digit represents the number of the tooth from the ...
Washington Wentworth Sheffield (April 23, 1827 – November 4, 1897) was an American dental surgeon best known for inventing modern toothpaste in the 1870s. With the help of his son Lucius T. Sheffield, he was also the first to sell the paste in collapsible tubes.
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Dental calculus typically forms in incremental layers [17] that are easily visible using both electron microscopy and light microscopy. [9] These layers form during periodic calcification events of the dental plaque, [18] but the timing and triggers of these events are not well understood. The formation of calculus varies widely among ...
If the double tooth is counted as two teeth, and the number of teeth in the dental arch is normal, the double tooth is likely due to fusion. Radiographic. In tooth gemination, the pulp chambers and root canals tend to be joined, unlike in tooth fusion where they tend to be separate. However, the degree of separation will depend on the stage of ...
The history of dental treatments dates back to thousands of years. [ 1 ] [ 2 ] The scope of this article is limited to the pre-1981 history . The earliest known example of dental caries manipulation is found in a Paleolithic man, dated between 14,160 and 13,820 BP . [ 3 ]
The molars or molar teeth are large, flat teeth at the back of the mouth.They are more developed in mammals.They are used primarily to grind food during chewing.The name molar derives from Latin, molaris dens, meaning "millstone tooth", from mola, millstone and dens, tooth.
A dental impression is a negative imprint of hard and soft tissues in the mouth from which a positive reproduction, such as a cast or model, can be formed. It is made by placing an appropriate material in a dental impression tray which is designed to roughly fit over the dental arches.