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Coronal cementum - where the enamel overlaps the cement. Abutment - It is also known as vis a vis relation, where the cement and enamel meet at the butt joint, occurring in 30% of sections, and the least common, occurring in 10% of sections. Gap between cementum and enamel exposing the dentin. [5]
Enamel signs are popular among collectors due to their striking designs and sturdiness. Collecting enamel signs rose in popularity during the late 1970s. [5] Some collectors are interested in signs about gasoline or about domestic products such as tobacco. A sign gets its value by a combination of size, design, condition, and product advertised.
Talon cusp will show physical signs of the irregular dental formation of the teeth and cause other symptoms of the disease that could possibly lead to dental problems in the future, depending on severity of the deformity. Most commonly, the extra cusp is located on the lingual surface, giving a three-pronged appearance. [5]
Cementicles are small, spherical or ovoid calcified masses embedded within or attached to the cementum layer on the root surface of a tooth, or lying free within the periodontal ligament. [19] [20] Cemental spurs can be found at or near the CEJ. These are symmetrical spheres of cementum attached to the cemental root surface, similar to enamel ...
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The dentino-enamel junction is thought to be a scalloped structure, which has occurred as an exaptation of the epithelial folding undergone during ontogeny. This scalloped exaptation has then provided stress relief during mastication and a reduction in dentin-enamel sliding and has, thus, not been selected against, making it an accidental ...
Most cue marks appear as either a black circle (if the physical hole is punched out on the negative used to make the projection print of the film), or a white circle (if the mark is made by punching a hole or scraping the emulsion on the positive film print). They will also appear as an oval if the print is projected through an anamorphic lens.
The March 1, 1943, edition of Life magazine included a photographic essay titled "Life Presents R. Buckminster Fuller's Dymaxion World", illustrating a projection onto a cuboctahedron, including several examples of possible arrangements of the square and triangular pieces, and a pull-out section of one-sided magazine pages with the map faces printed on them, intended to be cut out and glued to ...