What are rotten teeth?
Rotten teeth are teeth in which tooth decay has progressed and destroyed a large part of the tooth. It is not a different disease, but decay that was left to advance. The clinic's approach aims to keep as much healthy tooth as possible.
Untreated decay is common: in the United States, about one in five adults aged 20 to 64 has at least one untreated cavity (CDC, 2024).
How to recognize a rotting tooth: signs and effects
The first signs of tooth rot include sensitivity to heat, cold or sweets, dull or sharp pain when chewing, and white, brown or black spots on the tooth. At a more advanced stage you can see a hole in the tooth or feel it with your tongue.
Wider consequences
Early tooth rot sometimes causes no pain and cannot be seen, which is why regular dental visits are essential. Beyond the tooth itself, untreated rot can lead to infections, abscesses, damage to the jaw and even tooth loss. In rare cases, a dental infection can spread and cause sepsis, an extreme response of the body to infection and a medical emergency.
Diagnosis
Diagnosis combines a clinical exam with X-rays when needed, which reveal decay in places that are hard to see. How often you need check-ups depends on your oral health and personal risk of decay: every six months for many people, more or less often for others, as your dentist advises.
What causes rotten teeth?
Tooth rot comes from the combination of bacteria, sugars and starches in the mouth: they form sticky plaque whose bacteria produce acids that strip minerals from the enamel until holes form and the tooth becomes a rotten tooth.
Other contributing factors include a diet rich in sugar and simple carbohydrates, poor oral hygiene, dry mouth due to reduced saliva (sometimes caused by medicines, illness or radiation therapy) and genetic factors affecting how resistant teeth are. Conditions such as acid reflux or frequent vomiting also increase the risk by exposing enamel to acid.
Each patient's risk factors are assessed so that a personal prevention plan can be proposed, which may include diet changes, better brushing and flossing technique, fluoride treatments and sealants.
Stages of tooth rot: early, intermediate and advanced
Treatment depends on the stage:
- Early stage: fluoride treatments to remineralize the enamel
- Intermediate stage: removal of decayed tissue and a filling, usually composite
- Advanced stage: a root canal, or extraction and replacement of the missing tooth (for example with an implant)
1. Early stage
At the early stage, the enamel loses minerals, which shows as white or light brown spots. At this point the process can still be reversed: fluoride helps remineralize the enamel, and according to an American Dental Association (ADA) guideline, non-invasive treatments such as fluoride varnish can arrest or even reverse early carious lesions (Slayton et al., Journal of the American Dental Association, 2018). Professional fluoride treatments, fluoride toothpaste and suitable mouthwashes are recommended.
2. Intermediate stage
When rot reaches the intermediate stage, it has gone through the enamel into the dentin, the softer layer underneath. You may then feel increased sensitivity to cold, heat and sweets. Treatment usually involves removing the decayed tissue and filling the space with a restorative material; the clinic generally prefers tooth-colored composite.
3. Advanced stage
At the advanced stage, rot goes deeper and reaches the pulp, which contains nerves and blood vessels. This usually causes severe pain, high sensitivity and sometimes inflammation or an abscess. Treatment is more complex: usually a root canal to remove the infected tissue and save the tooth or, in more extreme cases, extraction and replacement with a restoration such as a dental implant.
Dental restoration
When rot is extensive and has caused significant damage, a filling is not enough and dental restoration is needed: crowns, bridges and inlays or onlays, made from metal-free materials such as zirconia and E-MAX. After a root canal, the tooth usually needs a crown; when decay is deep but the pulp is still alive, pulp capping can sometimes avoid a root canal.
Severe pain, facial swelling or fever require an urgent dental visit; swelling spreading toward the eye or neck, or difficulty swallowing or breathing, require a hospital emergency room immediately.
Examination, treatment plan and price quote
detailed and personalized
During the consultation, Dr Haim Aseriel examines your teeth, explains all the options and gives you a transparent price quote, with no obligation. The clinic is at 12 HaTnufa Street, Jerusalem.
Can a rotten tooth be saved, or does it need extraction?
In many cases a rotten tooth can be saved, as long as enough healthy structure remains to support a restoration. The guiding principle is to keep the natural tooth whenever possible: a root canal followed by a crown is considered before extraction. Antibiotics do not cure a rotten tooth; according to the ADA, dental treatment (root canal, drainage or extraction) is the main treatment, and antibiotics are considered only when there are general signs such as fever.
When the rot has destroyed too much of the tooth, or the root itself is affected, extraction becomes necessary. The missing tooth can then be replaced with an implant, a bridge or a denture, so that neighboring teeth do not drift and chewing is preserved. The options, their advantages and drawbacks are explained before any decision.
Rotten teeth in children
Baby teeth rot too: according to the CDC, cavities are the most common chronic disease of childhood in the United States, and more than half of children aged 6 to 8 have had a cavity in at least one baby tooth. For signs, treatment and prevention in children, see tooth decay in children.
How to prevent tooth rot
Prevention is the preferred solution. It includes:
- brushing twice a day with fluoride toothpaste
- flossing and interdental brushes for areas a toothbrush cannot reach
- a balanced diet with limited sugar and simple carbohydrates
- regular visits for check-ups and professional cleaning
Sealants on back teeth, especially for children and teenagers, create a physical barrier that keeps bacteria and acids out of the natural grooves, where rot often starts; according to the CDC, sealants on the back teeth prevent 80% of cavities. Using sugar substitutes such as xylitol, which the bacteria that cause decay cannot feed on, can also help.
Early diagnosis of rotten teeth is the key to avoiding complications. See a dentist as soon as you notice early signs such as sensitivity to hot or cold, pain when chewing or discoloration. At the clinic, at 12 HaTnufa Street in Talpiot, south Jerusalem, each option is explained in English and the treatment plan is built with you, including a detailed written quote. For severe pain, call 03-912-1879 during opening hours (Sun 8:00–19:00 · Mon 9:00–19:00 · Tue–Wed 9:00–21:00 · Thu 8:30–21:00 · Fri 8:00–14:00) or see emergency dentist.
Rotten teeth: frequently asked questions
Rotten teeth are teeth in which decay has progressed far enough to destroy a large part of the tooth, breaking down the enamel and dentin and sometimes reaching the pulp. Signs include sensitivity to hot, cold or sweets, dull or sharp pain when chewing, white, brown or black spots, and at a later stage a visible hole you can feel with your tongue.
Often, yes. Whether a rotten tooth can be saved depends on the stage: early decay can be stopped with fluoride, moderate decay is removed and filled, and decay that has reached the pulp is usually treated with a root canal and a crown. When too little healthy tooth remains, extraction and replacement, for example with an implant, become necessary.
Treatment of a rotten tooth depends on the stage: early stage, fluoride treatments to remineralize the enamel; intermediate stage, removal of the decayed tissue and a filling, usually composite; advanced stage, a root canal, or extraction and replacement of the missing tooth, for example with an implant.
An untreated rotten tooth can lead to infection, an abscess, damage to the jaw bone and loss of the tooth. In rare cases, a dental infection can spread and cause sepsis, a medical emergency. Fever, swelling spreading toward the eye or neck, or difficulty swallowing or breathing require going to a hospital emergency room immediately.
When decay has reached the pulp and caused inflammation or death of the nerve, a root canal is needed: the infected pulp is removed, the root canals are cleaned and disinfected, then sealed with a special material. After a root canal, the tooth usually needs a crown to protect it and restore chewing.
Sources
- Centers for Disease Control and Prevention, 2024 Oral Health Surveillance Report – View the page
- Dye B et al., NCHS Data Brief, 2015 – View the study
- Lockhart PB et al., Journal of the American Dental Association, 2019 – View the study
- National Institute of General Medical Sciences (NIH), Sepsis – View the page
- Slayton RL et al., Journal of the American Dental Association, 2018 – View the study
- ADA MouthHealthy, Fluoride – View the page
- Centers for Disease Control and Prevention, Oral Health Tips for Children, 2024 – View the page
