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.
A dental crown is covering often made of porcelain that is designed to hide damaged and unsightly teeth while making each tooth stronger. The crowns are the same color and shape as your natural teeth, so once the procedure is complete the work is invisible. Itâs common for a smile to change over time. Things like teeth grinding, tooth decay, cracked fillings, root canals, and simple age can all change the way your teeth look. Dental crowns are designed to repair this damage when a normal filling is inadequate. Three different types of dental crowns are available: 1  Porcelain â Typically used for the front teeth, these crowns perfectly mimic the look of your natural teeth.  Gold â Typically used for back teeth, this type of crown is especially strong and durable.