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.
They are used by cosmetic dentists to improve the look of worn, dark or ugly teeth and in the case of dental bridges, they will also close a gap in the smile. Dental crowns and dental bridges can be made of a varying amount of different materials, such as: Metal and porcelain - Cast metal alloy with a thin covering of Porcelain to make it look like a natural tooth. Gold alloy - A mixture of metal with at least 40% gold content.