Dental implants are a common and predictable way to replace missing teeth, and they generally have high success rates. However, complications can still occur over time. These complications can be biological, affecting the surrounding bone and tissues, or mechanical, involving the components of the implant system.
One common biological complication is bone loss around the implant. This can happen because of peri-implant inflammation, poor oral hygiene, or excessive biting forces on the implant. If bone loss continues, it can weaken the support around the implant and may lead to implant failure if not treated.
Mechanical complications are also seen in implant restorations. One of the most common problems is screw loosening. This occurs when the abutment screw that holds the crown or prosthesis to the implant becomes loose due to repeated chewing forces. If the screw continues to loosen, it can lead to movement in the restoration and discomfort for the patient.
In some cases, the implant screw can fracture. This usually happens from repeated stress or long-term fatigue on the screw. A fractured screw can be difficult to remove and may require special instruments or procedures to retrieve it. Another possible complication is a fractured abutment, which may occur if there are excessive forces, improper alignment, or material fatigue.
Although these complications are not extremely common, they highlight the importance of proper implant placement, good prosthetic design, and regular follow-up care to maintain the long-term success of dental implants.
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