Tooth decay is one of the most common chronic diseases worldwide. It often starts silently; by the time it hurts, it has usually progressed. Yet decay caught early can be stopped with simple measures or treated with a small filling.
In this article you will learn how decay develops, which signs to look out for and what you can do every day to prevent it.
How Does Tooth Decay Develop?
Certain bacteria in the mouth produce acid as they feed on sugars and other carbohydrates. This acid dissolves minerals from the enamel. Saliva and fluoride help replace lost minerals, but when acid attacks happen too often the balance tips and decay begins on the enamel surface.
Decay first progresses through the enamel and then through the softer dentine, where it speeds up and eventually approaches the nerve (pulp).
Stages of Decay
- Early (white spot): chalky white spots appear on the enamel. At this stage decay is often reversible with fluoride and good care.
- Enamel decay: the spot turns brown and a small cavity forms, usually without pain.
- Dentine decay: sensitivity to sweet, hot and cold begins; a filling is needed.
- Decay reaching the pulp: spontaneous, throbbing pain; root canal treatment may be required.
- Abscess: infection spreads to the root tip, causing swelling and pain on biting.
Early Warning Signs
- White, chalky or brown-black spots on the teeth
- A brief twinge when eating something sweet
- Increased sensitivity to hot or cold in a single tooth
- Food repeatedly getting stuck between certain teeth
- A rough area or small hole you can feel with your tongue
- Persistent bad breath
Decay between the teeth and at the edges of old fillings may not be visible, which is why regular check-ups and, when needed, X-rays matter.
8 Ways to Prevent Decay
- Brush twice a day with fluoride toothpaste, and never skip brushing before bed.
- Use floss or interdental brushes. Many cavities start between the teeth.
- Have sugary foods with meals. How often you eat sugar matters as much as how much; grazing all day keeps teeth under constant acid attack.
- Limit sugary and acidic drinks; drink water when you are thirsty.
- Chew sugar-free gum between meals; saliva helps neutralise acid.
- Do not ignore a dry mouth; some medicines reduce saliva, so discuss this with your dentist.
- Ask about preventive treatments if you are at high risk: fluoride varnish and fissure sealants on molars reduce the risk of decay.
- Have a check-up every six months. Decay caught early means smaller, more comfortable treatment.
How Is Decay Treated?
- Early lesions: can be monitored with fluoride and care advice.
- Cavities: decay is removed and the tooth is restored with a tooth-coloured composite filling.
- Extensive loss of structure: an inlay/onlay or a dental crown may be needed.
- Decay reaching the nerve: root canal treatment followed by restoration of the tooth.
- Teeth that cannot be saved: after extraction, the gap can be restored with an implant or bridge.
Decay Check-ups at Defne Prime Dent
At our clinic in Ataşehir, Istanbul, teeth are examined in detail at every check-up, and X-rays are taken when needed to detect hidden decay between the teeth. Read more in our article on composite fillings or contact us to book an appointment.
Frequently Asked Questions
Can tooth decay heal on its own?
Only early white-spot lesions can be stopped with fluoride and good care. Once a cavity has formed, it will not heal by itself and needs treatment.
Can decay progress without pain?
Yes. Decay often causes no pain until it reaches the dentine, which is why regular check-ups are important even without symptoms.
Do sugar-free foods cause decay?
Starchy foods such as white bread, crackers and crisps break down into sugars in the mouth and can contribute to decay. Acidic drinks erode enamel directly.
Is tooth decay contagious?
Decay-causing bacteria can pass from parent to child through saliva, for example by sharing spoons. Whether decay develops, however, depends on diet and care habits.
This article is for general information only and does not replace an examination. Please consult your dentist for advice specific to you.
