Common Causes of Crooked Teeth

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One of the most common reasons for visits to the orthodontist at all ages is crooked teeth, and these are one of the most common precursors to braces. Crooked teeth affect millions of people, and can affect everyone from children up to older adults.

At St. John’s Orthodontics, we’re here to help. Our affordable braces services help correct crooked teeth and provide long term solutions for oral health. Here are some of the common causes of crooked teeth.

Genetics are one of the areas you unfortunately can’t control. If your parents have crooked teeth or misaligned jaws, there’s a higher chance that you will also. A small jaw, which is also genetic, may also increase the risk of crowded teeth due to lack of space.

Thumb Sucking

Habits like thumb sucking put pressure on the teeth, forcing them to move into new positions over time. Thumb sucking will often lead to an open bite, and you’ll have a big gap where your upper and lower teeth don’t come together.

Dental Restoration

Crowns and bridges that have been fit badly can put pressure on teeth and cause them to move, and can impact your bite. If you experience these issues after a restoration, speak to your dentist.

Missing Teeth

The early loss of adult and baby teeth can affect the positioning of your remaining teeth. It may cause them to drift into gaps, or in some cases, adult teeth replacing baby teeth can overlap and crowd due to limited space.


Time can take a toll on the teeth – as we age, the teeth have a tendency to crowd and move forward. This is not due to wisdom teeth, despite common myths. The actual culprit is the jaw bone, which decreases in density over the years and changes shape.

Gum Disease

Gum disease or injury can impact the teeth, including making them loose and changing their alignment and bite.


If you suffer trauma to the face, the force could cause your teeth to move and become misaligned. Trauma can also impact the position of the jaw or damage the gums. Anyone playing sports should wear a mouth guard to avoid this.

Retainer Issues

Finally, not wearing a prescribed retainer is a huge cause of crowding among orthodontic patients. Be sure to wear the retainer and follow all orthodontist instructions.

For more on the causes of crooked teeth, or to find out about our services, speak to the pros at St. John’s Orthodontics today.

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