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.
The bulk of the tooth is composed of dentin. The dentin of the crown is covered. by enamel and the dentin of the root is covered by cementum. The cementoenamel junction marks the. transition from root to crown and is known as the cervix or cervical region. Inside the dentin of the root and. the crown is a hollow chamber filled with the soft tissue known as pulp.