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.
Helium (n.). An inert, monoatomic, gaseous element occurring in the atmosphere of the sun and stars, and in small quantities in the earth's atmosphere, in several minerals and in certain mineral waters.It is obtained from natural gas in industrial quantities. Symbol, He; atomic number 2; at. wt., 4.0026 (C=12.011).iktionary (3.00 / 1 vote) Rate this definition: helium (Noun). 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).