Dental charting symbols : Kdm dental college : Dental caps before and after.

Dental Charting Symbols


  • In finance, technical analysis is a security analysis discipline for forecasting the direction of prices through the study of past market data, primarily price and volume.See e.g.
  • (Charts) A chart is a graphical representation of data, in which “the data is represented by symbols, such as bars in a bar chart, lines in a line chart, or slices in a pie chart”. A chart can represent tabular numeric data, functions or some kinds of qualitative structures.
  • (The Charts) The Charts were an American doo-wop group of the 1950s, most famous for their recording “Deserie”.
  • Make a map of (an area)
  • Plot (a course) on a chart
  • Record on a chart


  • A thing that represents or stands for something else, esp. a material object representing something abstract
  • (symbolic) emblematic: serving as a visible symbol for something abstract; “a crown is emblematic of royalty”; “the spinning wheel was as symbolic of colonical Massachusetts as the codfish”
  • (symbol) something visible that by association or convention represents something else that is invisible; “the eagle is a symbol of the United States”
  • A shape or sign used to represent something such as an organization, e.g., a red cross or a Star of David
  • A mark or character used as a conventional representation of an object, function, or process, e.g., the letter or letters standing for a chemical element or a character in musical notation
  • (symbol) an arbitrary sign (written or printed) that has acquired a conventional significance


  • (dentist) a person qualified to practice dentistry
  • Of or relating to the teeth
  • (of a consonant) Pronounced with the tip of the tongue against the upper front teeth (as th) or the alveolar ridge (as n, d, t)
  • Of or relating to dentistry
  • of or relating to the teeth; “dental floss”
  • alveolar consonant: a consonant articulated with the tip of the tongue near the gum ridge
dental charting symbols

dental charting symbols – Charting Made

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Molybdenum (Moly)

Molybdenum (Moly)
Molybdenum (from the Greek meaning "lead-like"), is a Group 6 chemical element with the symbol Mo and atomic number 42. It has the sixth-highest melting point of any element, and for this reason it is often used in high-strength steel alloys. Molybdenum is found in trace amounts in plants and animals, although excess molybdenum can be toxic in some animals. Molybdenum was discovered in 1778 by Carl Wilhelm Scheele and first isolated in 1781 by Peter Jacob Hjelm.

Molybdenum is a transition metal with an electronegativity of 1.8 on the Pauling scale and an atomic mass of 95.9 g/mole.[2] It does not react with oxygen or water at room temperature. At elevated temperatures, molybdenum trioxide is formed in the reaction 2Mo + 3O2 ? 2MoO3.[3]

In its pure metal form, molybdenum is silvery white and very hard, though it is somewhat more ductile than tungsten. It has a melting point of 2623°C, and only tantalum, osmium, rhenium, and tungsten have higher melting points.[4] Molybdenum burns only at temperatures above 600°C.[5] It also has the lowest heating expansion of any commercially used metal.[6]

Molybdenum has a value of approximately $65,000 per tonne as of 4 May 2007. It maintained a price at or near $10,000 per tonne from 1997 through 2002, and reached a high of $103,000 per tonne in June 2005.[7]


Main article: Isotopes of molybdenum

There are 35 known isotopes of molybdenum ranging in atomic mass from 83 to 117, as well as four metastable nuclear isomers. Seven isotopes occur naturally, with atomic masses of 92, 94, 95, 96, 97, 98, and 100. Of these naturally occurring isotopes, five are stable, with atomic masses from 94 to 98. All unstable isotopes of molybdenum decay into isotopes of niobium, technetium, and ruthenium.[8]

Molybdenum-92 and molybdenum-100 are the only naturally occurring isotopes that are not stable. Molybdenum-100 has a half-life of approximately 1?1019 y and undergoes double beta decay into ruthenium-100. Molybdenum-98 is the most common isotope, comprising 24.14% of all molybdenum. Molybdenum isotopes with mass numbers from 111 to 117 all have half-lives of approximately .15 ?s.[8]

The world’s largest producers of molybdenum materials are the United States, Canada, Chile, Russia, and China.[9][6]

Though molybdenum is found in such minerals as wulfenite (PbMoO4) and powellite (CaMoO4), the main commercial source of molybdenum is molybdenite (MoS2). Molybdenum is mined as a principal ore, and is also recovered as a byproduct of copper and tungsten mining.[4] The large mining areas in Colorado (Climax) and in British Columbia yield molybdenite while the Chuquicamata mines in northern Chile produce molybdenum as a byproduct of copper mining. The Knaben mine in southern Norway was opened in 1885, making it the first molybdenum mine. It remained open until 1973.

Molybdenum is the 42nd-most-abundant element in the universe, and the 25th-most-abundant element in Earth’s oceans, with an average of 10.8 mt/km?.[5] The Russian Luna 24 mission discovered a single molybdenum-bearing grain (1 ? 0.6 µm) in a pyroxene fragment taken from Mare Crisium on the Moon.[10]

A side product of molybdenum mining is rhenium. As it is always present in small varying quantities in molybdenite, the only commercial source for rhenium is molybdenum mines.


See also: Category:Molybdenum compounds

Please help improve this article or section by expanding it.
Further information might be found on the talk page or at requests for expansion. (December 2007)

Molybdenum has several common oxidation states, +2 +3 +4 +5 and +6. The highest oxidation state is common in the molybdenum(VI) oxide MoO3 while the normal sulfur compound is molybdenum disulfide MoS2. The broad range of oxidation states shows up in the chlorides of molybdenum:

* Molybdenum(II) chloride MoCl2 (yellow solid),
* Molybdenum(III) chloride MoCl3 (dark red solid),
* Molybdenum(V) chloride MoCl5 (dark green solid),
* Molybdenum(IV) chloride MoCl6 (brown solid),

Like chromium and some other transition metals molybdenum is able to form quadruple bonds

Biological role

The most important use of the molybdenum atom in in living organisms is as a metal hetero-atom at the active site in certain in enzymes. In nitrogen fixation in certain bacteria, the nitrogenase enzyme which is involved in the terminal step of reducing molecular nitrogen, usually contains molybdenum in the active site (though replacement of Mo with iron or vanadium is known).

Though molybdenum forms compounds with various organic molecules, including carbohydrates and amino acids, it is transported throughout the human body as MoO42-.[11] Molybdenum is present in approximately 20 enzymes in animals, including aldehyde oxidase, sulfite oxidase, xanthine oxidase.[6] In some animals, the oxidation of xanthine to uric acid, a process of purine catabolism, is catalyzed by xanthine oxidase, a molybdenum-containing enzyme. T

Symbol Replications

Symbol Replications
Photo of symbol on a dumpster. Photo has been color-modified, replicated, and arranged.
Here’s the little (unfinished) story about this shot. In the parking lot of our apartment complex sits a shiny green dumpster. This particular, recently-painted dumpster has been there for a few months now, but I hadn’t paid it any special attention. A week ago when I was stalking photos, I took a close-up shot of a white symbol that was stencilled on the side of the dumpster. I remember vaguely thinking something like,
"That symbol stikes me more as a warning symbol than (say) a recycling symbol," but I thought no more of it, until today, when I started playing with the photo image. If my search for the meaning of the symbol gave me the right answer, it’s a "Radioactive" symbol. I asked the apartment custodian if he knew why the dumpster might have a radioactive warning on it. He said no, and that he hadn’t noticed the symbol. He said that the dumpster is used for yard wastes such as grass clippings, which must be kept separate from garbage and trash wastes which are kept in another dumpster in the basement of the building. The custodian said he does think it is amusing that every week the waste hauler comes, empties the garbage dumpster into the truck, and then drives over to the yard waste dumpster. And, yes, dumps that one into the same compartment of the same truck as the garbage. So my challenge for the summer is to discover how and why a dumpster IMBY has been designated as a container of radioactive materials.
Update: Called the local customer service number for the multi-national waste hauling behemoth (~$14B/yr). I asked if they knew why there was an official looking Radioactive symbol on their dumpster. And then I answered their questions about three times. Each question was a variation on "What?" She then put me on hold to go talk to her supervisor. That was about 9 months ago.
dental charting symbols

dental charting symbols

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