Which is More Dangerouse Buccal Fat Remover or Laser Liposucction for Face?

Buccal Fat pad Removal and Liposuction are both quite safe. That being said there is always an element of uncertainty when undergoing any procedure. Fortunately, if you are seeing a qualified plastic surgeon with proper training then your chances of a complication is quite low.
It's hard to say without seeing photographs, but both of these can be good options in the correct patient. 
In young patients:
For fat below the jawline , like a fat neck - laser or regular liposuction can be a good option
For fat above the jawline, like chubby cheeks - buccal fat pad removal is an excellent option. 
These can be performed together.
Hope this helps!

This is one of my favorite facial contouring procedures which creates a slimming look and reduces the appearance of chubby cheeks or “chipmunk cheeks” in the lower part of the face. This quick surgery can enhance the appearance of high cheek bones and give a more sculpted and chiseled facial look. Best of all, buccal fat pad removal is a permanent procedure and the buccal fat does not come back.

Patients in the early 30s who are slim but have chubby cheeks usually have enlarged buccal fat pads. Buccal fat removal, as the name describes, removes permanently the enlarged buccal fat pads thus giving the face a thinner more V shape facial appearance ( aka chubby cheek correction). This also allow to accentuate cheek bones in patients with good facial bone structure. Laser liposuction can remove the excess of fat that is located underneath the skin of the face and neck, but not the buccal fat pad pocket. Trying to remove the buccal fat pads with laser liposuction could potentially damage the nerves that control the facial expression. The view below helps to understand who could be a candidate for buccal fat removal.

To be honest, if you go to a well trained and busy surgeon these procedures have a low complication rate. Both can be done while you are awake in clinic. They both are performed through very small incisions. Also many patients benefit from a combination of both treatments. This allows narrowing and sculpting. The real kicker is if you are able to add some fat grafting on top. That really gives us the tools to make happy patients. Fat grafting has many benefits even besides the obvious addition of volume to the upper 1/3 of the face. I focus solely on facial plastic surgery so I am very comfortable with the anatomy. There are ducts, nerves, arteries and veins that need to be avoided and treated throughout both procedures. So make sure you see someone who does a lot of these procedures and you will do well.This is a video about fat transfer to the face. Best of luck.DrC