Dental Implants – What Determines Success and Failure

Patients are given dental implants as complete or near-perfect substitutes for their missing teeth. They are rarely told of the risks and advised about the rates of failure. Procedures may have severe effects and are not flawless. Implants will fail and they do. It is important to educate patients fully about the risks and to understand that dental implants will fail. Implant placement is very predictable, secure and produces a functional and aesthetic impact for patients with proper planning. look at this site
Dental implants have been around since their introduction in the 1950s. At an extraordinarily rapid pace, dental implant technology is evolving. Dental implant success typically increases as each new technology is adapted. Often a technology that is often fantastic marketing falls into the industry and either does not boost the achievement or actually hinders it. Luckily, it doesn’t happen too often.
So what’s causing dental implants to fail? There are a variety of variables that contribute to an increased risk of failure of dental implants. Unfortunately, some of the complications are not preventable and that is why, based on different research, dental implants are between 90-95 percent effective (the figure is usually closer to 95 percent). As with long bone fractures, some fractures are simply not fixed when the cast is removed, even with the best approximation of the fracture and great immobility. Either a non-union happens (meaning that no healing has ever really begun) or a fibrous union takes place (where you have scar tissue instead of bone on the two sides of the fracture). Non-unions and fibrous unions occur about 5 percent of the time, depending on the type and where the fracture is and the patient. That is close to dental implants’ failure rate.
The same concepts of fracture healing are associated with the healing of an implant. In order for the implant to successfully osseointegrate, you need a reasonable approximation of the bone to the implant surface and a time of immobility. Osseointegration means the implant has been approved by the bone and is integrated around the implant. The failure rate of implants, as you can see, is close to the rate of fractures that do not heal properly. You can get osseointegrate bone failure (similar to non-union) and you get a fibrous encapsulation (similar to the fibrous union in bone fractures) instead of the bone around an implant.
However, poorly regulated diabetes, certain bone metabolic and congenital disorders, some drugs such as glucocorticoids (prednisone), immunosuppressants and bisphosphonate drugs (Zometa, Fosamax, Actonel, Boniva, etc.) are some factors that increase the risk of implant failure . In addition, smoking and poor hygiene practises may contribute to an increased risk of implant failure. Those with these disabilities and/or these drugs should be brought to the attention of their implant surgeon in order to customise a treatment plan to meet their needs and their medical conditions.

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