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.
There are two elements that derive their names from Greek words meaning hidden: Krypton and Lanthanum. Krypton is from the Greek root word for hidden, krypto. The element â¦ krypton is a noble gas often used in fluorescent lamps. Lanthanum is from another Greek term meaning hidden, lanthanein.