Do I need an implant for each missing tooth?

No. If you are missing more than one tooth, one implant can serve for 2 or 3 teeth, depending on application area. What happens if implant screw does not bond with bone (osseointegration)?

When correct implant and method are used, this probability is next to impossible. Such failure, if ever, should arise within the first 6 months after initial surgery. In such cases, implant must be removed, which is a simple operation like tooth extraction. A new implant can be secured at the same spot after the bone heals, or a traditional prosthetic can be preferred. However, in cases where two or more implants are in place, remaining implants are generally strong enough to serve with a new prosthetic design.