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.
Tooth composition. 1. Dentin-the bulk of the tooth. It is calcified connective tissue. It is similar to, but harder than bone (has more Ca2) 2. Pulp Cavity within the crown. It contains pulp (which is N.A.V.a.L.). It exits via the root canal 3. Enamel-the hardest biological substance. It covers the dentin of the crown.