Mini implants are just smaller versions of regular sized implants.
They are marketed as being painless and simple which is no different than a regular dental implant. Unfortunately, they have been marketed to a certain subset of dentists who don’t want to do surgery or have any experience in surgery. Because of this they are marketed as being placed without an incision. This marketing of only the benefits has completely overshadowed some of the risks that are rarely discussed.
Placing implants without an incision is MUCH more dangerous then placing implants with an incision. The reason is because the dentist is working blindly and can easily perforate the bone, which could even lead to a life-threatening situation.