How Long do Medpor Chin Implants Last?

In my center, we use implants only made of silicone.  These all have a very high safety profile and level of patient satisfaction. I prefer silicone implants over Medpor because they are easier to place; meld well with the patient's own tissue to keep them well situated; and, if necessary are easily removed. Medpor is porous and actually adheres to the bone, which makes it challenging to remove.

Chin implants can last for decades. However, because a patient's body changes with time and age, they sometimes decide to remove an implant or switch it out for another size. This is easy to do with silicone and that's what I recommend. I hope this helps.

The material is commonly used in many other prosthetics such as joint prosthesis and so it has been relatively well studied.
I have used this implant. Sometimes the advantage is the disadvantage. Unlike most smooth surfaced implants the surrounding tissues grow into the product rigdly fixing it in place. This minimizes the chance of longterm rotation, etc. However, if you decide to remove it, it can be quite difficult.
Generally it is a very well tolerated implant and I have seen few long term problems which in my experience has been about 7 years.

Medpor implants are characterized by soft tissue in-growth.  This fixates the implant into place and long term, results in an augmentation that feels like native bone.  Although surgeons do get great aesthetic results with solid silicone, I never liked the material because it does not integrate and in some patients feels like a piece of rubber under the skin that can be moved around. 

The concerns of an implant that will be in place for decades include bony remodeling, infection and extrusion.  Thus far, this does not seem to be an issue with the Medpor material.