If your teeth feel or look longer than they used to, the teeth haven't grown. Your gum tissue has receded, exposing more of the root. Common causes include gum disease, aggressive brushing, nighttime grinding, and genetics. Recession is gradual, often painless, and warrants a dental evaluation before roots decay or become sensitive.

Most people notice it in the mirror on an ordinary morning. A retired teacher from Summerfield came in recently after catching her reflection while brushing. She was sure her front teeth had somehow grown overnight. They hadn't. Her gumline had quietly pulled back over a decade of hard brushing, and the change finally crossed her personal noticing threshold.

That's how recession usually reveals itself. Slowly, then all at once.

What does it mean when teeth feel longer?

Teeth don't grow in adulthood. When they feel or look longer, the surrounding gum tissue (and sometimes the underlying bone) has shifted downward. What you're seeing is more of the tooth than was visible before, specifically the root surface that used to be tucked under the gumline.

The change is almost always gradual. But the recognition is sudden. Many patients also notice a companion symptom around the same time: a cool zing when they sip cold water, or a scratchy feeling right where the gum meets the tooth. That sensitivity is the exposed root announcing itself.

What causes gums to pull back from teeth?

Gum recession has several common drivers, and most patients have more than one working against them at once.

• Periodontal disease. Chronic inflammation from bacterial plaque breaks down the gum attachment and supporting bone.

• Aggressive brushing. The American Academy of Periodontology identifies hard-bristled brushes and heavy pressure as well-documented mechanical causes of recession.

• Nighttime grinding. Research in the Journal of Oral Rehabilitation links bruxism to both gum recession and notching at the neck of the tooth.

• Genetics. Some people are simply born with thinner gum tissue that recedes more easily.

• Orthodontic history. Teeth that were moved outward through braces or clear aligners can end up with less bone and gum covering the outer surface.

• Ill-fitting partials or old restorations. Metal clasps or rough crown margins can irritate the gumline for years.

Identifying the cause matters more than treating the symptom. Rebuilding gum tissue while someone keeps scrubbing with a hard brush is a losing battle.

How can I tell if it's recession, wear, or both?

You can do a fair self-check at home before you ever pick up the phone. Stand in good light and look for these signs.

• A yellowish band near the gumline. Root surfaces are covered by cementum, not enamel, so they show up darker and warmer in color than the crown.

• A notch or step you can feel with a fingernail dragged gently across the gumline.

• Asymmetry. Compare the same tooth on the left and right sides of your mouth. Recession often starts on one side, usually the side you brush harder.

• Flat or chipped biting edges. If the tops of your teeth look shorter and squared off, you may have wear from grinding on top of recession from brushing.

Wear and recession frequently travel together. That's the pattern we see most often in adults over 45.

Is it dangerous if my teeth look longer?

Cosmetic worry is valid, but it's usually the smallest issue on the list. Here's what actually concerns us clinically.

Exposed roots have no enamel. According to the NIDCR, root surfaces are covered by cementum, a much softer tissue that decays faster and wears more easily than the crown of the tooth. Cavities on root surfaces can progress quickly and are harder to restore because they hug the gumline.

Sensitivity increases. Cold air, cold drinks, and even the bristles of your brush can trigger a sharp zing.

And in some cases, visible recession is a surface sign of deeper bone loss from periodontal disease. That requires a full periodontal evaluation with measurements, not just a visual look.

What can a dentist do about receding gums?

Once gum tissue has receded, the American Academy of Periodontology is clear: it does not spontaneously grow back to its original level without surgical intervention. But that doesn't mean the situation is hopeless. Most patients never need surgery.

At Inspire Dental in Tigard, our approach usually moves in this order.

• Measure and map. We record recession at specific teeth so we can track whether it's stable or actively getting worse.

• Address the cause. Coaching on brushing technique, switching to a soft or electric brush with a pressure sensor, fitting a night guard for grinders, and treating any active periodontal disease.

• Manage sensitivity. In-office desensitizing agents and prescription-strength fluoride can quiet exposed roots.

• Rebuild the visual gumline. Tooth-colored composite bonding can cover exposed root surfaces in mild cases.

• Refer for grafting when indicated. Connective tissue grafts are a predictable surgical option for isolated recession defects, per the AAP.

Most patients we see from Bull Mountain and King City fall into the first three categories. Surgery is the exception, not the rule.

How do I protect my gums going forward?

Prevention is boring and it works. A few habits do most of the heavy lifting.

• Soft-bristled brush. Always. Medium and hard bristles have no place in an adult mouth with any recession history.

• Gentle circular motion, not hard sawing back and forth.

• Electric brush with a pressure sensor if you tend to bear down.

• Cleanings every three to six months if recession is active, not the standard six.

• A custom night guard if you grind or clench.

• Don't ignore bleeding gums. Bleeding is a signal, not a personality trait.

Simple as that.

Frequently Asked Questions

Can receding gums grow back on their own?

No. Once the gum tissue has migrated down the root, it does not regrow to its original position without a surgical graft. The good news is that recession can usually be stabilized so it stops getting worse, and cosmetic bonding can visually restore the gumline in mild to moderate cases.

How fast do gums recede once it starts?

Usually very slowly, measured in fractions of a millimeter per year. That's why most people are shocked when they finally notice it. Faster recession suggests an active driver like untreated periodontal disease or heavy grinding, and that warrants prompt evaluation.

Does brushing harder clean my teeth better?

No. Plaque is soft and comes off with gentle contact. Hard brushing removes gum tissue and wears grooves into your teeth without cleaning any better. If your toothbrush bristles are flared or bent after a month, you're brushing too hard.

Is gum recession always caused by gum disease?

No, and that's an important distinction. Plenty of recession comes from mechanical causes like aggressive brushing, grinding, or thin genetic gum tissue in people with otherwise healthy gums. That said, only a dental exam with periodontal measurements can rule gum disease in or out.

At what age do teeth typically start looking longer?

Most people first notice it between their late 40s and 60s, though the underlying recession often started years earlier. Research summarized by the ADA suggests some degree of recession is present in a majority of adults over 50. Regular checkups catch it before it becomes visually obvious.

If your teeth have started looking longer in the mirror, or if you've felt a new step along the gumline, we'd rather see you early than late. Call Inspire Dental in Tigard at (503) 639-4330 to schedule a periodontal evaluation. We're on Pacific Highway near the King City border, easy to reach from Bull Mountain, Summerfield, and anywhere along the 99W corridor.