Experience matters. I know of several nurse injectors who are skillful, meticulous and experienced. I also know of some physicians who occassionally perform injections, but do not have much expertise in this area. You need to do your diligence on the experience and performance of the practitioner whether s/he is an RN or an MD.
While I suppose it is Okay to have a nurse inject filler materials, I know if I was the patient, I would want the doctor to do it.
