Why Dental Implants Fail to Integrate
Surgical implantation can give your dental implant mechanical security in the jaw. This is the same security that a screw has in a piece of wood: pressure between the threads and the material, as well as friction, keep the implant from coming out. However, to be truly secure in the jaw, the implant must go through osseointegration. In this process, the body removes the old, pressured bone and replaces it with new, unstressed bone. However, unlike a screw in wood, this doesn’t make the implant loose. Instead, the new bone attaches directly to the implant. The implant essentially becomes part of the bone, and it won’t simply come loose in the future.
Dental implants might fail to integrate into the jaw because of several reasons. One is osteoporosis, which means you naturally have low-density bone around the implant. Your body might also be unable to make good-quality bone to replace the pressured bone. In addition, the type of bone around the implant affects survival. Implants in the lower jaw may be more likely to fail than those in the upper jaw.
Other factors might affect osseointegration, such as consuming alcohol too soon after implant surgery or smoking at any time during the osseointegration process.
Failure to integrate is the leading cause of implant failure in the first six months but becomes relatively rare after the first year following implantation.
Mechanical Failure of Dental Implants
Mechanical failure of dental implants is a relatively rare complication. This means that the dental implant or the abutment is cracked or fractured. Although the titanium implant is very strong, it is not invulnerable to pressure from biting and chewing, as well as traumatic stress.
Mechanical failure risks increase over time. People with bruxism are more likely to experience this type of implant failure.
Overloading of Dental Implants
Overloading dental implants is also a relatively rare complication. It occurs when the force on an implant from biting, chewing, bruxism, and other sources overwhelms the bone built around the implant. This almost always occurs shortly after the final restoration–the dental crown or bridge–is placed.
The Sydney implant dentists at My Hills Dentist have tools to measure the force on your dental restoration to further minimize this risk.