Noel correctly adds the length of three sides of a rectangle and gets 88 cm her brother Ryan correctly adds the lengths of three sides of the same rectangle and gets 80cm. What is the number of cm in the perimeter of the rectangle. I was having this discussion with another teacher and we need a third opinion.
Tooth crowns. A tooth crown or dental crown is a tooth-shaped sleeve made of porcelain or metal or a combination of both that is placed over a tooth. The dentist will match it up to the shape and colour of your other teeth.
This type of crown is made entirely out of some type of dental ceramic, such as porcelain. When they're made, they can either be: 1  Handcrafted by a dental technician.  Carved out of a single block of ceramic by a computerized milling machine (CAD/CAM unit).