¿Por qué siento un diente más alto que los demás de repente?
When a tooth suddenly feels taller than the others, it is almost never growing. It is usually inflammation pushing it slightly out of its socket. The most common causes are pulpitis, a fractured tooth, sinus pressure in the upper molars, or a high spot after recent dental work. It is an early warning sign that deserves same-day evaluation.

When a tooth suddenly feels taller than the others, it is almost never growing. It is usually inflammation pushing it slightly out of its socket. The most common causes are pulpitis, a fractured tooth, sinus pressure in the upper molars, or a high spot after recent dental work. It is an early warning sign that deserves same-day evaluation.
It is an odd sensation. You bite down, and that tooth hits first. The others do not even touch yet. At La Mirada One Dental, we address this complaint almost every week, often in patients who drove down Imperial Highway from Cerritos or Norwalk thinking it was "just a phase." It almost never is.
What does it mean when a tooth feels taller than the others?
Patients describe it in several ways. "It feels prominent." "It's the first one to hit when I bite." "Like there's something underneath pushing it up." The tooth has not physically grown. What has changed is the pressure inside or around it.
When there is inflammation in the pulp or the ligament supporting the root, fluid accumulates. That fluid has nowhere to go. It pushes the tooth up by a few microns, enough for your bite to detect it before its neighbors. It is an early alarm. It often appears before visible pain or swelling.
Ignoring it is the classic mistake.
What are the most common causes?
There are six usual culprits, and we see them in roughly this order:
Pulpitis (inflamed pulp): according to the American Association of Endodontists, pulp inflammation generates hydrostatic pressure inside the tooth that can slightly extrude it, producing that "high" sensation when biting.
Fractured tooth: the AAE clinical guide on cracked tooth syndrome describes pain when biting and when releasing pressure, and many patients report that their bite feels different.
Maxillary sinusitis: the roots of the upper molars are located very close to the floor of the maxillary sinus. The NIDCR and peer-reviewed dental literature confirm that a sinus infection can generate referred pain and a sensation of pressure in those molars.
Recent dental work with a high spot: a new filling, crown, or veneer can remain a few microns above the ideal contact. It can be corrected in five minutes.
Bruxism or TMJ inflammation: nighttime clenching inflames the periodontal ligament and changes how your teeth fit together when you wake up.
Periodontal abscess: an infection in the gum can lift the tooth from its base.
Each cause looks different in the chair. That is why self-diagnosis rarely works.
Is this a dental emergency?
It depends on the accompanying signs. We divide them into two groups.
Yellow flags. Mild sensation, no real pain, comes and goes, you can eat on the other side without a problem. Schedule within the week. It is not a race, but it is not something to leave for next month.
Red flags. Throbbing pain, swelling in the cheek or gum, fever, unusual taste, you cannot chew on either side, the tooth feels loose. Call us the same day at (562) 777-1234. According to AAE clinical guidelines, untreated irreversible pulpitis progresses to pulp necrosis and usually requires root canal treatment or extraction. Every day that passes reduces options.
A self-employed patient from La Mirada, in his 40s, called us on a Friday morning. "It just feels weird when I bite, it doesn't hurt." He came in the afternoon. We found a vertical fracture in a premolar. We caught it in time to save the tooth with a crown. One more week and it would have been an extraction and implant.
What can I do at home before my appointment?
A few simple, yet important things:
Do not chew on that side. Period.
Eat soft food at room temperature. Nothing too cold or too hot.
If you have no medical contraindications, ibuprofen usually works better than acetaminophen for inflammatory dental pain in adults, according to ADA and Cochrane reviews on dental analgesics.
Rinse with warm salt water, three or four times a day.
Sleep with your head slightly elevated if you feel pressure.
What you should not do: wait to see if it goes away on its own. Reversible pulpitis has a window of opportunity. Irreversible pulpitis does not.
That "high tooth" is your mouth warning you quietly before it screams. Listen to it early.
How will we diagnose and treat it?
The visit is simpler than most people expect. We start with a bite check using articulating paper, those colored strips that mark where your teeth meet. In seconds we see if there is an obvious high spot.
Then a digital X-ray. If we suspect a fracture or deep abscess, we use our 3D CBCT scanner to see the root in three dimensions. We perform pulp vitality tests (cold, gentle percussion) to know if the pulp is alive, inflamed, or necrotic.
The treatment changes based on what we find:
High spot on a restoration: bite adjustment at the same visit. Five minutes.
Reversible pulpitis: removal of the decay or problematic restoration, sedative medication.
Irreversible pulpitis or necrosis: root canal treatment and crown.
Deep vertical fracture: extraction and implant planning.
Periodontal abscess: drainage, deep cleaning, antibiotic if applicable.
Referred sinusitis: we refer you to your physician to treat the sinus.
We offer same-day evaluation for patients from La Mirada, Cerritos, Norwalk, Whittier, and the Biola University area. Our Saturday hours help those who cannot miss work during the week.
Frequently Asked Questions
Can a tooth actually grow taller in an adult?
Not spontaneously. Adult teeth do not grow. What can happen is that a tooth extrudes (drifts slightly out of the socket) if you lose the opposing tooth and there is no longer contact to keep it in place. That process takes months or years, not days. A sudden change is almost always inflammation, not growth.
How long can I wait if it does not hurt yet?
A maximum of one week if there is no pain, swelling, or fever. And only if the rest of your mouth feels normal. If any red flags appear sooner, call us that same day. The window between reversible and irreversible pulpitis can be just days.
Could it be from grinding my teeth at night?
Yes, it is a common cause. Nighttime clenching inflames the periodontal ligament and makes the tooth feel "high" upon waking, improving as the day goes on. If you notice this pattern, a custom-made nightguard usually resolves it.
Does insurance cover an emergency exam for this?
Most PPO plans cover a limited emergency exam and necessary X-rays. At La Mirada One Dental, we accept most major PPOs and offer a free emergency dental exam for uninsured patients. We also have an in-house membership plan for those without traditional PPO coverage.
Can a sinus infection really make a tooth feel tall?
Yes. The roots of the upper molars are within millimeters of the floor of the maxillary sinus. When the sinus becomes inflamed, pressure is transmitted to the teeth, and many patients describe a "high" sensation or dull ache. The clue is usually that several molars on the same side feel strange at once, and it worsens when you bend over.
If you suddenly feel a tooth that is taller than the others, do not let it pass. Call La Mirada One Dental at (562) 777-1234 or visit us at 14930 E Imperial Hwy, Suite D, La Mirada. We are here to assist you the same day when you need it.