Dermatologist vs. plastic surgeon for fillers?

Thank you for this interesting question, which is so often a topic of conversation, even debate, within the industry.
Both Board Certified Dermatologists and Plastic Surgeons are considered Core Specialists for treating with Fillers and Botox.  However, the most important factor is to be treated by a Board Certified Dermatologist or Plastic Surgeon, who has a great deal of technical expertise and experience.
Many times injections are delegated to a Nurse, Physician Assistant or Nurse Practitioner.  You should always insist that the injector be a doctor - of dermatology or plastic surgery; and take the time to review the doctor's certifications, experience and before & after photos, and be assured that the doctor and you are clear on your goals and expected outcomes.
Best of Luck to You!

Thank you for your question. 
Your results are not related to whether the Dr is a dermatologist or plastic surgeon, but related to the skill and experience of the injector.  It's important to find a Dr who will listen to your needs and strive to accomplish your desired goals. 
Contact a board certified facial plastic surgeon or dermatologist in your area for a comprehensive consultation