People are living longer than ever, and while regular brushing, flossing, and checkups allow many of us to maintain our natural smiles for a lifetime, sometimes our teeth just can't keep up. If you've lost a tooth (or a few teeth) due to injury or disease, dental implants can rejuvenate both your smile and your oral health. An implant is a synthetic tooth root in the shape of a post that is surgically placed into the jawbone. The “root” is usually made of titanium: the same material used in many replacement hips and knees, and a metal that is well-suited to pairing with human bone. A replacement tooth is then fixed to the post. The tooth can be either permanently attached or removable. Permanent teeth are more stable and feel more like natural teeth. The ideal candidate for implants is a non-smoker who has good oral health, including a sufficient amount of bone in the jaw, and healthy gums with no sign of gum disease.