A dental implant is a small device made of titanium metal. It consists of three parts: the porcelain crown, the abutment, and the implant. If a tooth or several teeth are missing a dental implant is carefully placed into the jawbone to support the replacement tooth. Therefore it acts as a substitute tooth root, giving it much needed strength. It can also be used to support existing bridges or dentures to increase stability and reduce gum tissue irritation. Which is which? Fill in the blank spaces with the correct word: porcelain crown, implant, abutment.