They are natural looking replacements for missing teeth that also provide the same function as your natural tooth root. A dental implant is placed into your upper or lower jaw bone. After the bone has grown around the implant, implants can hold a crown, bridge or over-denture just like roots hold natural teeth in place. Implants are very durable and can last a lifetime. They require the same maintenance as natural teeth; this includes brushing, flossing and regular dental check-ups.