Many different methods are used to rebuild bone, restore your natural jaw line and smile, and provide a good basis for implant-supported teeth. 
More about Dental Implants

Bone augmentation can occur before or at the time of placement of the implant.

All of the following bone augmentation techniques are designed to help ensure that your implants are long-lasting, with ample, strong and sturdy bone that will allow your new teeth to fit and function like healthy, natural teeth.

Bone Grafts.  Bone grafting is a procedure that entails adding bone to the jaw by using your own natural bone from a different location and/or by using donor, processed or synthetic bone materials. Often the new bone can be obtained from inside the mouth using local anaesthesia.

Sinus Lift. Missing upper back teeth are among the most difficult to restore.  When the back teeth are missing the natural bone deteriorates over time and the sinus cavity becomes larger. A sinus lift is a procedure for patients who have insufficient natural bone in this area for implant placement. The procedure involves adding bone below the sinus so that one or more implants can be placed. The procedure does not affect speech, intonation or cause sinus problems. Many patients say it causes only minimal discomfort.

Ridge Expansion (Ridge Modification).  If the jawbone is not wide enough to support implants bone graft material can be added to a small ridge, or space, that is created along the top of the jaw. It can also be used to correct an unattractive and difficult-to-clean indentation that can occur in the jawline near missing teeth.