It may be a very attractive sight to see little babies suck their fingers or thumb. The downside of this habit is the harm it does to their baby teeth and the effect it has on the permanent teeth that have to come soon. It is absolutely not a habit to be supported or encouraged by parents.
Parents have to break this habit as soon as possible. They can try an orthodontist recommended thumb sucking appliances to break this habit. You can navigate to this website to check the reviews of thumb sucking appliances.
What I can do to stop thumb-sucking:
Thumb or finger sucking seems like a comforting factor for kids. But it is recognized as a bigger problem than one can see. We have to adopt various ways to stop this habit if only talking with your baby did not help.
One can use pleasant-tasting elements on the thumb to stop the kid from continuing to thumb-sucking
You can use a thumb sucking glove.
Parents also can apply a temporary bandage to protect the thumb from being inserted into the mouth.
Pediatric dentists usually use braces to stop the thumb sucking habit of a kid. Braces with the gate is a reminder for the kid to stop sucking on her/his thumb.