Crowded Teeth Treatment

A Head Start for a Healthier Smile

What Are Crowded Teeth?

Crowded teeth happen when there isn’t enough room in the jaw for all of your teeth to sit side by side in a straight line. With nowhere else to go, teeth overlap, twist, or get pushed in front of or behind their neighbours. Crowding is the most common reason people see an orthodontist, and it ranges from a slightly overlapped lower tooth to teeth that are stacked and hard to reach with a toothbrush.

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Pure Orthodontics — Early Treatment FAQ

Pure Orthodontics / FAQ

Crowded Teeth, answered.

Usually, yes. Teeth slowly shift throughout life, and crowding in the lower front teeth tends to increase through your 20s, 30s and beyond. That’s why many adults notice their teeth are more crooked now than they were in high school.

This is a common belief, but research suggests wisdom teeth are not the main cause of crowding in the front teeth. Teeth tend to crowd with age even in people whose wisdom teeth never came in. There can be other good reasons to remove wisdom teeth, and your dentist can advise you on those.

Yes, for most mild to moderate crowding. Aligners can gradually make room and straighten teeth. Severe crowding, or crowding combined with bite problems, is sometimes better treated with braces.

Most people don’t. Room can often be made by widening the arch slightly or by gently polishing tiny amounts of enamel between certain teeth. Removing teeth is usually only recommended for severe crowding, and we’ll explain why if it applies to you.

Yes. The technique, called interproximal reduction, removes a very small amount of enamel between teeth to create space. It’s done within safe limits and is a routine part of many braces and Invisalign treatments.

Teeth naturally want to drift, and without regular retainer wear, the lower front teeth are usually the first to crowd. The good news is that this kind of relapse is often quick to correct with clear aligners, followed by a new retainer.

Mild crowding can take a matter of months, while severe crowding can take a couple of years. Your timeline depends on how much space is needed and how your bite fits together.

Crowding can be obvious or subtle. You might see teeth that overlap, a tooth sitting in front of or behind the others, or upper canine teeth that come in high up like “fangs” because they ran out of room. Other signs are less visible: • Floss that snags or shreds between certain teeth • Food that gets stuck in the same spots • Tartar building up in one area even with good brushing • Lower front teeth that look more crooked than they used to

What Causes Crowded Teeth?

The main cause of crowded teeth is a mismatch between the size of the teeth and the size of the jaw, which is often inherited. For example, you may inherit larger teeth from one parent and a smaller jaw from the other, leaving less room for the teeth to fit properly. Crowding can also be caused by a narrow upper or lower jaw, baby teeth that are lost too early and allow nearby teeth to shift into the empty space, or baby teeth that stay in too long and affect how adult teeth come in. Extra teeth can also contribute to crowding, and teeth may naturally shift and become more crowded as we age.

Crowded Teeth Treatment Options

For children: If crowding is spotted early, we can sometimes make room while the jaw is still growing, using an expander or by holding space when a baby tooth is lost early. This can reduce how much treatment is needed later.

For teens and adults: Braces and clear aligners both straighten crowded teeth. The key part of the plan is how space is created, whether that’s widening the arch, polishing small amounts of enamel, or in severe cases removing a tooth.

After treatment: Retainers keep crowding from coming back. Crowded teeth have a strong tendency to shift, so wearing your retainer as directed is the best way to protect your result.

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Do Crowded Teeth Need to Be Treated?

Crowded teeth are more than a cosmetic concern. Overlapping teeth create tight spots that toothbrushes and floss can’t reach well, so plaque builds up. That raises the risk of cavities, gum inflammation and bad breath. Crowding can also cause uneven wear and put teeth under stress in the bite. And since crowding usually gets worse with time, treating it sooner often means a simpler fix.