Lumpy temple filler results and now I have dents, should I ask for filler with a blunt canulla?

Because you are most likely experiencing residual swelling, 10 days is premature to determine the quality of your results. Cannulas are used to improve the safety of the treatment, but do not necessarily improve the smoothness of the results. If the filler was a hyaluronic acid based filler, such as Restylane or Juvederm, then you may benefit from an injection of Hyaluronidase, an enzyme which can reduce some of the filler lumps that are the most pronounced.    
Regardless, you should wait at least 2 to 3 weeks  before determining the quality of your results. You should follow-up with the physician who administered the treatment you are referring to.

It usually takes 2-4 weeks for the lumps to smooth out if a HA filler was used, longer for Sculptra or Radiesse. The use of a cannula vs a needle doesn't make a difference in regards to smoothness. I would give it some time and if the irregularities remain you can consider dissolving it with hyaluronidase if a HA filler was used. Good luck!