Seriously, if that really happen I will kill myself
From an evolutionary standpoint, teeth are important for survival (you need them to eat) and reproduction (you need a decent set of chompers to attract a good mate). Accordingly, dreaming about losing your teeth exercises your instincts to protect yourself and your appearance, says Keith Stevens. On a more symbolic level, teeth represent how powerful and confident you feel, according to psychologist and dream interpreter Ian Wallace. Therefore, losing your teeth in a dream could represent a waking-life situation that is eroding your confidence.