Should I get a chin implant or fillers? (photos)

You have a few options to achieve a stronger-looking chin and profile. If you’re not sure you’re ready for surgery, but still want to improve and strengthen your chin and profile, I’d suggest augmenting your chin with Sculptra and/or Voluma. I’d also remove the fat underneath your chin with liposuction or Kybella. If you like your new look, you can make it permanent with a chin implant.

Fillers placed in the chin simply do not work well since they are a soft tissue augmentation, are only temporary, and are not FDA approved for that application. For a permanent augmentation, consider a chin implant which is a bony augmentation. The chin implants are composed of solid silicone and can be custom carved when necessary, and are placed through a small incision underneath the chin under local anesthesia. This is what is required to augment this deficient mandible. For many examples and more information, please see the link and the video below

Based upon the very good posted photos, I do not feel yu are a candidate for any chin enlargement. I see your angle and tight jaw line leading me to think your marirontee lines and mandibular jugal groove need fillers. I place the HA fillers deep on the jaw bone to give elevation - the "Y-Lift chin" plus some sub dermal placement, about 4 to 6 syringes are needed. Fees in $3,000+ ranges under local anesthesia with by mouth light sedation. 

 Hi, I have performed many facial shaping procedures, including Chin Augmentation with dermal fillers or silastic chin implants, for over 30 years.  From the photos, your chin is quite weak and there is a slight amount of ptosis of the chin muscle.   When the chin is weak, this creates an imbalance making the nose appear larger, the mid face top heavy, the lower face looks short, de-emphasizes the lips and allows early formation of a "double chin".  
 Proper placement of a silastic chin implant adds forward projection to the chin thereby creating harmony and balance to the lower face.  Using the same incision, liposuction can be performed to reduce the fat and further shape the neck.  Excess skin, from below the chin, can also be removed through the same incision.  
 I have found that placement of a silastic chin implant, through a small curved incision under the chin (also allows excess skin removal) to be very safe, quick, highly effective and far less invasive than a sliding genioplasty (requires extensive tissue dissection, bone cuts and placement of metal screws and plates to secure the cut segments of bone).  I perform chin implant surgery in 30 minutes or less, often using a local anesthetic alone.  In my opinion, you are a good candidate for chin implant surgery.  I frequently use precise placement of a dermal filler to augment the chin but this is far less cost effective over the years versus a silastic chin implant.  In addition, while a silastic chin implant can correct the chin ptosis, using a dermal filler will not.  
Hope this helps.