Is mouthguard curve your teeth and break bite?

[chefbeginners_cope]

If i already have overbite does mouthguard can do it worse or i will just do things that it need to do? i didnt do any research about mouthguard and i know very little about it.
or is mouthguard just cope

 

[Punjabi Waffen]

its okay bud, use your words