Best jaw trainer for front teeth?

[Kiernan Sheridan]

looking for the best trainer I can use on my front teeth. Tough chewing gum truly is never hard enough, so I’m switching (for sometime at least)

 

[Milktard]

Every single one will give you malocclusion never chew with your front teeth, they are meant for slicing not chewing, trainers that target the front teeth are retarded