Each tooth is related and controlled by an organ and vertebra of the spinal column. When teeth grow in crooked fashion or with too large spaces between them, it shows that there are internal changes underlying these occurences. If the two front teeth aren't straight and normally spaced, for example, it indicates some congestion in the kidneys and the part of the spinal column connected with the kidneys. Trying to force the teeth into place may look estetically much better, but it can lead to spinal issues and organ problems. It is like putting these organs into a straight jacket. Everything in the body is connected with everything else. The body doesn't make mistakes; it grows things like teeth, nails and hair in exact coordination with the rest of the body, for optimal function and effciency. Braces can injure not just the mouth, but the whole skeletal structure. Keeping anything in the mouth abnormally tight can have a ripple effect throughout the body. I cannot see any real advantages in wearing braces.