Does pushing my teeth with my tongue makes my teeth crooked?

Tongue thrust: Yes a tongue thrust can cause your teeth to move and become crooked and out of normal, position.

Tongue habit: An occasional push or two probably won't make any difference as it is countered by your lips holding you teeth in. However, with enough force and frequency, over time the teeth can be flared out.

No: If you already have straight teeth your tongue pressure against your front teeth could over time create spaces but not likely if you have good bone support and no gum disease. If you have crowded teeth it may help straighten them out. Ask your dentist at your next visit to evaluate. At the least he may suggest an clear retainer.

Eventually....: It may take twenty or thirty years for your teeth to eventually shift due to daily pressure from your tongue while swallowing and speaking. Just putting pressure on your teeth for a minute or two will microscopically move them, but they bounce right back after the pressure is released.

Not unless: Not unless you have a definitive mho-functional problem. You would have to be very diligent about doing this to affect tooth movement. If you're concerned, ask your Dentist to take a look. If he/she feels your teeth are moving, and Orthodontic consultation may be in order.

I beg to differ...: Actually tooth movement can occur more quickly in children. Two and three years olds get gaps from thumb sucking and pacifiers. Young kids aged 5-6 can develop open-bites where the top teeth have gaps between them from top teeth to bottom teeth and spaces between teeth from tongue habits and improper swallowing. You may need to see a dentist who performs orthodontics.