Caries Between Teeth: What It Is, Why It Is Hidden, and How It Is Detected

You noticed a dark spot between your teeth, but the mirror does not really show it. Or there is a dull ache on the side when you drink hot tea. It sounds like caries between teeth — the very kind that can hide for years.

What caries between teeth is

Caries is a chronic dental disease in which acids produced by bacteria destroy hard tissues. Enamel is affected first, then the process reaches the dentin, and without treatment — the pulp and periodontium. Caries is the most common human disease: over 93% of people, and 95–98% of adults have filled teeth.

Natural fissures and the spaces between teeth provide favorable conditions for long-term retention of dental plaque. Plaque accumulates as early as 20 minutes after eating, and enamel consists of 96% minerals, which begin to break down at pH 4.5.

What caries between teeth is called

The terms "contact," "lateral," "interdental," and "approximal" describe caries in the space between teeth.

Why caries between teeth is often hidden

Plaque persists for a long time in the spaces between teeth. If it is not removed, it hardens and turns into tartar. In addition, caries may cause no symptoms at all at the start. Cavities usually do not hurt until they become large and affect the nerves or lead to a tooth fracture. Plaque most often accumulates on the posterior molars, slightly above the gumline on all teeth, and along the edges of fillings. Frequent snacking increases the time acids are in contact with the tooth surface, and sticky food stays on the teeth longer.

Signs and symptoms of caries between teeth

There may be no symptoms at all. If they appear, they look like this:

• dull pain in the tooth, especially after sweets, hot or cold;
• sharp pain when eating or drinking hot, cold, or sweet foods;
• white, brown, or black spots on the tooth;
• visible pits, holes, or dark spots.

Sometimes the tooth or gum becomes infected — then a painful accumulation of pus, an abscess, appears.

How hidden caries is detected: examination and X-ray

At the appointment, everything is fairly routine. The doctor examines the oral cavity. During the examination, the tooth surface may turn out to be soft — this is one of the signs. Next is an X-ray: images show some cavities earlier than they can be seen with the naked eye. Most cavities are found in the early stages precisely during routine examinations. People at high risk may have images taken once a year.

That is why "nothing hurts" is not an argument. Hidden caries between teeth is inconvenient precisely because it is detected during an examination, not by sensations.

When to see a dentist

Make an appointment if a tooth hurts or there is sharp pain when eating and drinking; if the gums hurt, swell, or bleed when brushing; if you see dark spots on the teeth. A routine examination is needed even when there are no problems: if you have not seen a dentist for two years — it is time, and for those under 18 — after a year. An untreated cavity can reach the pulp and lead to an abscess, and the earlier treatment starts, the simpler and cheaper it is.

Caries between teeth by itself is not a reason to call an ambulance; 103/112 — for a life-threatening condition. Tooth pain and an abscess are a reason for an urgent visit to the dentist.

This material is for reference: it helps you understand what is happening and what to ask the doctor, but it does not replace a dentist's consultation.

This content is for reference and does not replace a doctor's consultation. Medical disclaimer