Most common mechanism of failure of dental implants is
**Core Concept**
Osseointegration, the direct structural and functional connection between a living bone and the surface of a load-carrying dental implant or other artificial tooth root, is crucial for the long-term success of dental implants. The most common mechanism of failure of dental implants is related to the loss of this osseointegration.
**Why the Correct Answer is Right**
The most common mechanism of failure of dental implants is **perimplantitis**, an inflammatory condition that leads to the destruction of the bone surrounding the implant. This occurs due to the accumulation of plaque and biofilm around the implant, triggering an inflammatory response that compromises the osseointegration process. The loss of osseointegration allows the implant to become mobile, leading to its eventual failure.
**Why Each Wrong Option is Incorrect**
**Option A:** **Aseptic loosening** is more commonly associated with joint replacements, such as hip or knee arthroplasty, rather than dental implants.
**Option B:** **Infection** can contribute to the failure of dental implants, but it is not the most common mechanism of failure.
**Option C:** **Overload or excessive bite forces** can also contribute to the failure of dental implants, but they are not the most common cause.
**Clinical Pearl / High-Yield Fact**
To minimize the risk of perimplantitis, patients with dental implants should maintain excellent oral hygiene, including regular brushing, flossing, and dental check-ups.
**Correct Answer: B. Infection can contribute to the failure of dental implants, but it is not the most common mechanism of failure.