Beauty is a weapon and a smile is its sword. Having a confident smile can make you feel like you are in control. It boosts your self-confidence and smiling a lot can do wonders for your health. However, will you be able to smile confidently when you have crooked teeth or lose several teeth? More often than not, you will feel awkward and unconfident. With this, you will be perceived by others as unfriendly and unhappy.