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Tooth fusion occurs when at least the dentin of developing tooth germs fuse. When only the cementum (root portion) of teeth is fused, this is known as concrescence. [4] The exact cause of tooth fusion is unknown, but is the result of alterations in embryonic tooth development.
Concrescence is an uncommon developmental condition of teeth where the cementum overlying the roots of at least two teeth fuse together without the involvement of dentin. [ 1 ] [ 2 ] Usually, two teeth are involved with the upper second and third molars being most commonly fused together. [ 3 ]
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 following table compares general and technical information for a selection of common and uncommon Texas Instruments graphing calculators. Many of the calculators in this list have region-specific models that are not individually listed here, such as the TI-84 Plus CE-T, a TI-84 Plus CE designed for non-French European markets.
The calculator was superseded, in 1982, by the HP-15C.. Although it is argued the HP-41C (introduced late 1979 and only a matter of months after the HP-34C) was a replacement for the HP-34C, they were in fact differentiated as much by price (the HP-34C being 50% that of the HP-41C) as by functionality and performance (the HP-41C being the first HP LCD-based and module-expandable calculator ...
The HP-16C Computer Scientist is a programmable pocket calculator that was produced by Hewlett-Packard between 1982 and 1989. It was specifically designed for use by computer programmers, to assist in debugging.
The description above is given for what is now called a serially concatenated code. Turbo codes, as described first in 1993, implemented a parallel concatenation of two convolutional codes, with an interleaver between the two codes and an iterative decoder that passes information forth and back between the codes. [6]
Casio fx-570MS 2nd Edition calculator. This is a revised version of the original fx-570MS. Revised variants of W Series of calculators including new functions such as: Relocation of multiple functions into menus, previously featured in Casio fx-5500LA, [3] but function is selected by numeric keypad; Multiple statement recall; Non-programmable ...