dr hasan
🏥kliniki*

Changing the color of teeth: why teeth darken and how to return the shade

Other names: Изменение цвета зубов, потемнение зубов, жёлтые зубы, серый зуб, пятна на зубах, потемнел зуб после лечения

The color of a tooth is determined by a thin translucent layer of enamel and dentin showing through it. When the shade changes, the reason lies either outside or inside the tooth. External staining is caused by plaque, tea, coffee, spices, smoking and nasvay, and it can be removed by professional hygiene. Internal changes are associated with the tooth tissue itself: age-related thickening of dentin, trauma with pulp death, caries, the consequences of root canal treatment, taking certain antibiotics in childhood or excess fluoride. Separately, there are chalky and brown spots with fluorosis and initial caries. Understanding the cause is important because bleaching does not help with all types of darkening.

🧾 МКБ-10: K03.7 🏥 Where it is treated: 6 External or internal paintingOne dark tooth is alarmingWhitening doesn't always help
👨‍⚕️ Which doctor
Dentist-therapist, hygienist
🔬 Diagnostics
Inspection, assessment of tooth vitality, targeted photograph for darkening of one tooth
💊 Treatment
Professional hygiene, whitening, remineralization, root canal treatment, restoration or veneer
📈 Prognosis
External staining is completely eliminated; internal requires an individual approach
⚠️ At risk
Smoking and nasvay, strong tea and coffee, poor hygiene, tooth trauma, excess fluoride, tetracyclines in childhood
⏱ When to see a doctor
Planned; darkening of one tooth with pain - urgently

🚨 See a doctor urgently

With these signs do not wait for a scheduled appointment — the condition requires emergency care.

  • Резко потемнел один зуб, особенно после травмы
  • Потемнение сопровождается болью, отёком десны или свищом
  • Тёмное пятно с шероховатой поверхностью и застреванием пищи
  • Появилась подвижность потемневшего зуба
  • Потемнение сопровождается неприятным запахом изо рта
  • У ребёнка меняется цвет нескольких постоянных зубов сразу

External painting

Surface pigments settle on the pellicle - the thinnest film on the enamel - and in dental plaque. The rougher the enamel surface and the worse the hygiene, the faster and deeper the color accumulates. The most common culprits are strong tea, coffee, coloring drinks, spices like turmeric, tobacco and naswar, as well as some mouthwashes when used for a long time. This staining evenly covers all teeth, is more pronounced in the cervical area and between the teeth and is easily removed by professional cleaning.

  • Tea, coffee, coloring drinks
  • Smoking and nasvay
  • Spices and dyes in food
  • Plaque and tartar
  • Long-term use of individual rinse aids
  • Rough enamel after erosions

Internal color change

Here the color is embedded in the tooth tissue itself. With age, enamel thins and dentin becomes thicker and darker, so teeth naturally turn yellow—this is not a disease. Trauma can lead to hemorrhage into the pulp and death of the nerve: the tooth gradually turns gray or pinkish-brown. After root canal treatment, the tooth darkens if there are particles of pulp or filling material left inside. Taking tetracycline antibiotics during the period of tooth formation produces persistent streaks, and excess fluoride results in fluorosis with chalky and brown spots.

  • Age-related thickening of dentin
  • Tooth trauma and pulp death
  • Consequences of endodontic treatment
  • Caries, including those hidden under a filling
  • Tetracycline teeth
  • Fluorosis
  • Amalgam and old fillings

White and chalky spots

White spots are often less frightening than dark ones, although sometimes they mean more. A chalky, matte spot without shine, especially along the gums and around braces, is early caries, the stage of demineralization of the enamel. At this stage, the process is reversible and can be treated by remineralization without drilling. Multiple symmetrical white and brown spots on the teeth of the same name are characteristic of fluorosis, which develops if the child received excess fluoride during the period of teeth formation. Enamel hypoplasia also occurs after illnesses suffered in childhood.

  • Initial caries - a dull spot near the gums
  • White spots around braces
  • Fluorosis - symmetrical spots
  • Enamel hypoplasia
  • Early remineralization therapy
  • Infiltration or restoration for persistent defects

What does a dentist do?

The appointment begins with an examination and finding out whether all teeth are stained or just one, whether there is pain, whether there has been an injury or root canal treatment. If a single tooth darkens, be sure to take a targeted photo and check whether the nerve is alive. Then the doctor removes the plaque and stone: often, after professional hygiene, the patient sees his natural shade and understands whether anything else is needed. Next we discuss options depending on the cause: whitening, in-canal bleaching of a dead tooth, composite restoration, veneers or a crown.

  • Examination and history taking
  • Sight image of darkening of one tooth
  • Pulp vitality check
  • Professional hygiene and stone removal
  • Whitening live teeth
  • Intra-canal whitening of a pulpless tooth
  • Restoration, veneer or crown

Prevention and care

Saving the shade is easier than returning it. The basis is high-quality daily hygiene: brushing twice a day, cleaning the interdental spaces with floss or a brush, professional cleaning by a hygienist within the timeframe agreed upon by the doctor. It is useful to rinse your mouth with water after tea, coffee and coloring foods and not to abuse acidic drinks, which soften the enamel. Quitting smoking and nasvay significantly improves color. Abrasive whitening pastes, soda and activated carbon are not suitable for constant use - they wear away the enamel, and the tooth becomes darker over time.

  • Brushing teeth twice a day, flossing or brushes
  • Professional hygiene on time
  • Rinsing with water after coloring drinks
  • Quitting smoking and nasvay
  • Avoiding baking soda and charcoal as whitening agents
  • Do not brush your teeth immediately after sour food - wait 30 minutes

Services and prices for this diagnosis

Based on official price lists of Tashkent clinics. The exact cost is determined after examination.

💊 Treatment

Frequently asked questions: Change in tooth color

Why did only one tooth darken?+
Most often due to the death of the pulp after injury or deep caries, as well as as a consequence of canal treatment. Such a tooth needs to be shown to the dentist and a picture taken: whitening from the outside will not help here, a different approach is required.
Does whitening damage enamel?+
Professional whitening performed by a dentist after sanitation of the oral cavity does not destroy the enamel. Temporary increased sensitivity is possible, which passes. Independent experiments with soda, coal and aggressive acids pose a danger.
Do whitening toothpastes help?+
They remove surface pigment due to abrasive and therefore lighten teeth slightly, but do not change the natural color of dentin. With the constant use of highly abrasive pastes, the enamel becomes thinner, and the teeth, on the contrary, begin to look darker.
Is it possible to whiten teeth with fillings and crowns?+
The whitening composition acts only on natural tooth tissue. Fillings, veneers and crowns are not lightened, so after the procedure they will become noticeably darker than the surrounding enamel and will have to be replaced. This must be discussed with your doctor in advance.
Why does my child have white spots on his teeth?+
More often this is initial caries due to plaque or fluorosis due to excess fluoride during the period of tooth formation. Sometimes - enamel hypoplasia after a previous illness. The child needs to be shown to the dentist: at an early stage, remineralization and hygiene correction are sufficient.

The information on this page is for reference only and does not replace a doctor consultation. Only a qualified specialist can make a diagnosis and prescribe treatment after an in-person examination.

Where it is treated discoloration of teeth в Ташкенте

Определить причину изменения оттенка и подобрать методику может стоматолог. Clinics Ташкента со стоматологами:

Tashkent, Yashnobod district, st. Korasuv, 4d
M Texnopark 🚶 1.2 km
M Yashnobod 🚶 1.2 km
M Tuzel 🚶 1.8 km
🚌 Nearest bus stop 🚶 290 m · buses: 18, 30, 44, 49
Mon–Fri:09:00–17:00
Closed now
Tashkent, Yakkasaray district, st. Sh.Rustaveli, 109 A
M Oybek 🚶 2.4 km
M Kosmonavtlar 🚶 2.6 km
M Novza 🚶 2.9 km
🚌 Nearest bus stop 🚶 70 m · buses: 2, 11, 12, 40, 45, 47
Пн–Sat:08:00–17:30
Closed now
Tashkent, Chilanzar district, st. Bunyodkor 24/1d
M Olmazor 🚶 400 m
M Chilonzor 🚶 1.4 km
M Mirzo Ulug'bek 🚶 2.4 km
🚌 Nearest bus stop 🚶 220 m · buses: 41
Mon–Fri:09:00–18:00
Closed now
Tashkent, M. Ulugbek district, Mustakillik Ave., 86d
M Hamid Olimjon 🚶 850 m
M Ming O'rik 🚶 1.5 km
M Amir Temur xiyoboni 🚶 1.8 km
🚌 Nearest bus stop 🚶 60 m · buses: 17, 24, 58, 60
Mon–Fri:09:00–17:00
Closed now
Tashkent, Shaykhantakhur district, st. Abaya, 5d
M Alisher Navoiy 🚶 450 m
M G'afur G'ulom 🚶 650 m
M Paxtakor 🚶 1.1 km
🚌 Nearest bus stop 🚶 160 m · buses: 17, 35, 43
Mon–Fri:09:00–17:00
Closed now
Tashkent, Chilanzar district, 3 block, 43d
M Mirzo Ulug'bek 🚶 900 m
M Chilonzor 🚶 1.3 km
M Novza 🚶 1.4 km
🚌 Nearest bus stop 🚶 150 m · buses: 2
Mon–Fri:09:00–17:00
Closed now

ICD-10 code

Official international classification codes — these are used in medical records and statistics.

Other diseases: Dentistry

Book