PMMA Filler for Jaw, Cheeks and Chin?

Thank you for the great question.  Although the concept of a permanent filler is very appealing, you must remember that facial aging is a very dynamic process.  Use of a permanent filler presupposes that you will not have changes in your face over the next 5-10 years.  Needless to say, this is a very false assumption.  PMMA is not metabolized by the body and is the same material used in various glues.  It is also associated with lumps, nodules, granulomas  and other problems for 5-10 years after injection.  Since facial aging is dynamic the PMMA will be permanent but the aesthetic result is not.

PMMA bone cement is used to fix implants in position and to remodel lost bone. It is applied as a dough-like cement that gradually hardens. It acts like a grout and not so much like a glue. Although sticky, it does not bond to either the bone or the implant, it primarily fills the spaces between the prosthesis and the bone preventing motion.
A big disadvantage to this bone cement is that it heats to quite a high temperature while setting and because of this it kills the bone in the surrounding area. Due to its consistency it has to be placed in position through an adequately sized incision.
Artecoll is an injectable filler that is a mixture of PMMA and collagen derived from cows. It lasts 2 or more years and may be permanent. It can be very difficult or impossible to remove if you do not like the result or if it gathers into lumps. Both forms can be hard to impossible to mold into the shape that you would want especially the Artecoll.
You are much better off with standardly used cheek, chin or jaw implants which are easier to place, easier to remove and give you a much more reliable result in terms of shape.

Using permanent fillers such as PMMA in the face is not a good idea. They can become hard and form granulomas that are very difficult to treat.