Can saline solution mimic the look of fillers in the cheek area so I'm not stuck with it if I don't like?

Yes. In general, saline can give you an approximation of the results that a hyaluronic acid filler such as Voluma would create. However, the physical properties of water and hyaluronic acid are very different and so the results will be just an approximation. Further, a major component of the cost of filler treatment is the physician's time. While saline is cheap your physician injector's time is not. Therefore, this might be a very expensive option of achieving a brief glimpse of what fillers can achieve. I hope this information is helpful for you.Stephen Weber MD, FACSDenver Facial Plastic Surgeon

Injection of saline to the desired area of fullness can give you a rough idea of what a filler might look like, but because their consistencies are so different, it would be an imperfect test method.  However, if you are hesitant to just go ahead and try a filler (most are of course temporary as well), it might be a reasonable option.  I've attached a web reference about fillers.  Good luck,.

Yes this can work to simulate the results you can obtain from fillers.  However, it is not as natural looking and isn't a good representation in my opinion.  I suggest going to a facial contouring expert for filler injections and the results will be natural/  I suggest getting an HA filler as it can be reversed if you do not like the results.  Best, Dr. Emer.