I am interested in doing a temporal augmentation by way of fat injections?

I may come across a slightly more negative than the other responses you have received in regards to temporal volume augmentation using fat transfer.
The inherent problem lies in that there is an insufficient amount of tissue to graft into.
Basic principles of tissue transfer or tissue grafting are based on taking a vascular small or thin particles of tissue and placing them in surrounded live vascular tissue with the idea that the grafted tissue will eventually establish its own blood supply by the ingrowth of capillaries, a process known as revascularization.
The temporal area, especially those who are fin temporary else can to consist of skin with very little fat resting on the superficial temporal parietal fascia.
The temporal parietal fascia is a thin vascularized membrane.
Just below this is the temporal fashion covering the temporalis muscle. This is the muscle that is used when chewing.
If you put your fingers on your temple areas and buy down you will feel the muscle contract.
In order for any significant volume of fat to survive each grafted particle of fat has to be surrounded by live vascular tissue.
If the space being augmented is simply skin over fascia then the area will not hello the survival of any significant amount of grafted fat.
 If the Fed is grafted deep to the temporal fascia into the actual temporalis muscle than a more substantial amount of fat can be grafted with survival.
Success with this technique requires an integral anatomic knowledge of the tissue layers and where to graft the fat.
Results can look spectacular for the first few months but the question is what percentage of the fat will survive and what are the long-term results.
Went too much fat is placed in an area with an insufficient base or scaffolding of live tissue the grafted fat will not survive and will slowly be reabsorbed. 
Before proceeding with this procedure I suggest asking the physician to show you a series of long-term results(greater than six months) of successful fat grafting augmentation to the temporal area.
I cannot emphasize enough the importance of understanding the anatomy and the basic principles of tissue transfer in this area.
Anyone can inject fat in large volumes with temporary beautiful results.
Fat transfer is fickle and requires specific environments to survive long term.
Best,
Mats Hagstrom M.D.

Filling the temple is something I've been doing since the early 1990s.it is a great thing to do if the anatomy is right. I routinely put in some local anesthetic before an treatment to demonstrate the effect and look of the procedure. Of the many I have done the best results were overwhelmingly best in people who had filler injections which last 2 to 4 years with restylane or similar products.implants work well if placed in the right plane. Fat can make irregularities which are difficult to treat. If it were my temples I would do fillers.