Best Answer: Hi i got clear saphire braces. http://www.iceclearbraces.com/. very similar to ceramic braces but they disapear on your teeth more and cost the same as ceramic. Im from melbourne i went to different orthodontist the price range was 5,500-7,000, i found a place that did it for 6,300. If you pay everything up front you get a small discount of 3%.
Polyatomic ions are atoms held together by covalent bonds as a group and that from CHM 1220 at Wayne State University
crystals in which the particles are bound together primarily by ionic chemical bonds. Ionic crystals may consist of either monatomic ions or polyatomic ions. Examples of the former are the crystals of the halogenides of alkali and alkaline-earth metals, which are formed by positively charged ions of the metal and by negatively charged ions of the halogen (NaCl, CsCl, CaFj).