The metal helps strengthen the ceramic but the outer porcelain base can still break. These crowns also have to be prepared in a lab. Average Cost: $1,093 per crown (without insurance) Crowns For Baby Teeth: Stainless steel crowns or caps are used to protect
The element was first discovered from the spectrum of the sun so it was named after the Sun Helios. Helium is name is derived from the Greek name Helios-personification of t â¦ he Sun in mythology.
A colorless and inert gas, and the second lightest chemical element (symbol He) with an atomic number of 2 and atomic weight of 4.002602. helium (Noun) A form or sample of the element. Origin: From helium, from á¼¥Î»Î¹Î¿Ï (because its presence was first theorised in the sun's atmosphere).