Can cheek filler and/or marionette line filler cause Trigeminal Nerve damage? Can it heal?

I am not aware of trigeminal nerve damage being associated with filler treatments. The maxillary (cheek) and mandibular (marionette) branches of the trigeminal nerves come from the facial skeleton deep to where fillers may be placed. I hope this helps. Dr Joseph

Just want to center the discussion on Trigeminal Nerve (TN) and its branches.  The brand of the product is mostly irrelevant.  The damage is likely due to poor placement of the product and most injectors will not place products so far back and so deep.  However, recently, there has been certain techniques that have been promoted using needles injecting deep to bone.  It is relatively safe if placed in the correct location but when placed too high or low, it will have the potential of nerve damage to the distal branches of TN.  Depending on the extent of the damage, 3-4 months recovery is possible but not guaranteed.
Lastly, it is very unlikely to even hit the TN or any of its major branches as they are behind or within bone structures.  
You may also wish to explore the possibility of other causes of TN issues. 

I have not seen nor do I know any doctors who have seen trigeminal nerve damage from fillers.  If you or someone you know is experiencing some symptoms following filler it may be from another cause but a professional consultation should be sought.