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Símptomas de un diente muerto: dientes grises y niveles de dolor

Dr Jody Bardash DMD in Fair Lawn, NJ

Revisado por la Dra. Jody Bardash, DMD |

Noviembre de 2025 • 5 min de lectura

Revisado por la Dra. Jody Bardash, DMD |

Noviembre de 2025 • 5 min de lectura

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Si una de tus piezas dentales parece más oscura que las demás, o si de repente desaparecen tus dolores de dientes, es normal sentirte alarmado. Después de todo, los dientes no deberían volverse grises y el dolor generalmente no desaparece sin una razón.

This guide explains the most common dead tooth symptoms, how pain levels change as a tooth dies, and what a dentist can do to keep infection from spreading.

What Is a “Dead” Tooth, Exactly?

A dead tooth is a tooth that no longer has a healthy blood supply. When blood flow stops, the nerve tissue inside the tooth dies, a process called necrosis. The tooth may still be physically in place, but biologically, it is no longer alive.

This condition always requires professional treatment, even if it does not hurt.

The 3 Stages of a Dying Tooth

Understanding the timeline helps explain why symptoms can feel confusing.

Stage 1: The Trigger

This is the event that damages the tooth’s nerve. At this stage, symptoms may be mild or easy to ignore.

  • Deep cavity
  • Crack or fracture
  • Sports injury or fall
  • Repeated dental trauma

Stage 2: The Warning

This is when most people notice something is wrong. These dying tooth symptoms indicate the nerve is inflamed and struggling to survive.

  • Sharp sensitivity to cold or heat
  • Lingering pain after temperature exposure
  • Sudden jolts when biting
  • Throbbing or aching pain

Stage 3: The Silence

This is the stage that often tricks people. The absence of pain does not mean healing; it usually means the nerve has died completely.

  • Pain suddenly fades or disappears
  • Tooth begins turning grey, brown, or black
  • Pressure sensitivity or dull ache near the root
  • Possible bad taste or odor
Diagram of the bruised tooth spectrum, from a healthy white tooth to a dead gray-brown tooth with an inflamed or dying nerve

Why a Dead Tooth Turns Grey

Discoloration from a dead tooth comes from the inside out. As blood cells break down inside the tooth, they stain the internal structure, like how a bruise darkens under the skin.

This staining:

  • Cannot be brushed away
  • Will not respond to whitening strips
  • Typically worsens over time


A grey tooth is one of the most visible signs of a dead tooth and should always be evaluated.

Does a Dead Tooth Always Hurt?

No, and that is what makes it dangerous. A dead tooth may cause:

  • No pain at all
  • Mild pressure sensitivity
  • Pain only when infection spreads beyond the root


Once the nerve is dead, the tooth cannot feel temperature or decay. That doesn’t stop bacteria from spreading into the jawbone.

Think of it this way: a dying nerve is like a smoke alarm blaring to warn you of danger. A dead nerve is when the alarm goes silent, even though the fire is still spreading unseen.

Can a Dead Tooth Stay in Your Mouth?

Not safely without treatment. Leaving a dead tooth untreated can lead to:

  • Tooth abscess
  • Jawbone infection
  • Facial swelling
  • Infection spreading to other teeth or the bloodstream

Even if the tooth feels fine today, complications can develop silently.

How Dentists Treat a Dead Tooth

Treatment depends on how much structure remains and whether infection is present. Common options include:

  • Root canal: Removes dead tissue, disinfects the tooth, and preserves it
  • Crown: Restores strength and appearance after a root canal
  • Extraction: Used when the tooth cannot be saved


If appearance is a concern, dentists also offer cosmetic solutions such as internal bleaching, veneers, or crowns.

Is a Dead Tooth an Emergency?

It becomes urgent if you notice:

  • Facial swelling
  • Fever
  • Increasing pressure or pain
  • A pimple-like bump on the gums


Even without these signs, have a suspected dead tooth evaluated promptly to prevent infection.

Graphic listing signs of a dead tooth: trauma, sensitivity, throbbing pain, discoloration, bad taste, and swelling

What to Tell the Receptionist When You Call

Clear language helps you get prioritized quickly.

Diles:

“I have a tooth that’s turning grey and may be dead. I’ve had changes in pain and need an urgent evaluation.”

Avoid saying only “tooth discoloration” or “old tooth pain.”

Tu siguiente paso

A grey tooth, disappearing pain, or pressure in one tooth isn’t something to wait out. A dentist can confirm whether the tooth is dead with X-rays and explain your options before infection sets in.

Dentistry.com connects you with local dentists who can evaluate dead tooth symptoms, often with same-day appointments.

Find a dentist near you and get clear answers before a silent problem becomes serious. Haga clic en aquí o llame (888) 597-3896 para encontrar un dentista cerca de ti.

Dr Jody Bardash DMD in Fair Lawn, NJ

Sobre la Dra. Jody Bardash, DMD

Sobre la Dra. Jody Bardash, DMD

La Dra. Jody Bardash es una clínica médica principal en Profesionales dentales de Fair Lawn, un consultorio de odontología familiar y cosmética en Fair Lawn, Nueva Jersey. Con más de 30 años de experiencia, se compromete a brindar atención médica compasiva y de alta calidad en odontología y estética facial. 

Doctor Bardash, graduado del Instituto Isaac Brauer de la Universidad Yeshiva, se mantiene a la vanguardia de la innovación a través de una formación clínica avanzada y la educación continua. Es miembro de la AACD, ADA, AGD, American Academy of Facial Esthetics y la American Society for Dental Aesthetics. También es profesor clínico en el Centro Médico de la Universidad de Hackensack y en el Hospital de Englewood y ha sido reconocido por el Consejo de Investigación de los Consumidores de América durante 25 años como uno de los mejores dentistas y injertistas faciales de los Estados Unidos.

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