It is hard to say
without seeing a photo. My suggestion is to learn more about Voluma. The new
facial filler that will instantly restore volume and give your face a softer
appearance, can last up to two years. Consult with your doctor to decide if
Voluma is right for you.
Pictures of the indentation on your cheek would be helpful to give you the best advice. If it is an issue with volume replacement, a laser would not normally help with this problem. Instead of Perlane, you could try a firmer filler, like Radiesse, or possibly a surgically placed implant. It's also possible that you just needed more Perlane to see a better effect. If the indentation is within the skin, and not due to volume loss, then it is possible that a laser could improve it.