Chairside Q&A

Am I Too Old to Straighten My Lower Teeth?

By Douglas Sandquist, DDS and Jeannie Lee-Mirzayan, DDS

Updated September 26, 2026

The short answer

Maybe. Age on its own doesn’t stop teeth from moving, and we straighten adults’ teeth all the time. The better question is whether it’s worth doing for you. Crooked lower front teeth are harder to keep clean, and they’re often the ones that chip and break as we get older. Fixing them after that usually takes a real investment of time and money, often at a stage of life when one or both are in shorter supply.

Why the lower front teeth matter

They’re harder to keep clean. Where teeth overlap, plaque collects in spots a toothbrush and floss can’t reach well, and the gums around them tend to stay irritated.
They get thinner at the neck. Because they’re crooked, these teeth tend to get smaller around the neck, where the tooth meets the gum, and that makes them weaker.
They take a beating. Lower front teeth that are out of line can take uneven force from the upper teeth. Over the years the edges wear, chip, and sometimes break.

Crowded, overlapping lower front teeth with buildup and gum irritation where they overlap. — Crowded lower front teeth. Where they overlap is where plaque collects and the gums stay irritated.

The part people don’t plan for

When a crowded lower tooth breaks, the fix is rarely one visit. It can mean crowns, sometimes a root canal, sometimes replacing the tooth. That tends to happen later in life, when time, money, or both may be harder to come by. For many people it’s simpler to straighten the teeth while they’re still healthy than to rebuild them after they break.

Lower front teeth with one tooth broken off at the gum line. — A lower front tooth that broke off at the gum line.

The lower front teeth seen from the tongue side, with the broken tooth bonded back into place. — In this case we were able to bond it back into place, seen here from the tongue side. That isn’t always possible.

When it’s worth it, and when it isn’t

Your gums need to be healthy first. Gum disease gets treated before any teeth move.
It’s a commitment. Aligners are worn 20 to 22 hours a day, and a retainer afterward is what keeps the result.
Lower teeth alone is sometimes possible, but moving one arch changes how it meets the other, so it depends on your bite.
Sometimes leaving them alone is fine. If your lower teeth are only mildly crooked, easy to clean, and not wearing or chipping, leaving them as they are can be a reasonable choice. We’ll tell you which camp you’re in.

How to find out

At your exam we take a 3D scan and look at how well you can keep those teeth clean, whether they’re wearing, and how your bite comes together. If straightening makes sense, Dr. Lee-Mirzayan, our Invisalign provider, plans it with you. More on Invisalign.

The full story: Can You Get Invisalign for Bottom Teeth Only? and What If You Make It to 92?

Chairside Q&A from Douglas Sandquist, DDS and Jeannie Lee-Mirzayan, DDS, Sandquist Dentistry, Las Vegas. More quick answers.