Treatment of tooth decay

Last updated on: 5 Aug, 2026

Tooth decay is the most common dental condition worldwide and the main reason for visiting the dentist. In Bulgaria, a large proportion of the population suffers from tooth decay, making the timely detection and treatment of tooth decay of paramount importance for optimal dental health. 

At Dentatime Clinic, we understand how important it is to preserve our patients’ natural teeth, which is why we offer modern, aesthetic methods for the diagnosis and treatment of tooth decay. Proper treatment of tooth decay not only saves the affected tooth but also prevents more serious complications that could lead to tooth loss.

Image: freepik

What is tooth decay?

Tooth decay is the progressive destruction of hard dental tissues – enamel and dentine – caused by acids produced by bacteria in the oral cavity. There is a direct link between tooth decay and enamel, as enamel is the first line of defence that is attacked by bacterial acids. This infectious disease is characterised by the demineralisation of tooth enamel, followed by the formation of cavities in the tooth structure. 

The process begins with demineralisation of the enamel, followed by destruction and the formation of a cavity, which becomes deeper over time. In advanced stages, deep caries may develop, affecting not only the enamel but also the dentine, reaching the dental pulp. 

Particularly dangerous is caries between the teeth, known as interproximal caries, as it is difficult to detect during a visual examination and is often diagnosed via an X-ray.

Causes of tooth decay

The main factors contributing to tooth decay can be divided into primary and secondary causes. Primary causes include microorganisms in the oral cavity, particularly the bacterium Streptococcus mutans. Factors such as diet and the strength of the enamel are also significant.

Bacterial growth

The bacterium Streptococcus mutans is the main cause of tooth decay. It is a natural inhabitant of the oral cavity, but under favourable conditions it begins to multiply rapidly. 

The bacteria accumulate in dental plaque and form a sticky layer on the tooth surface, which provides an ideal environment for their growth. The link between carbohydrates and tooth decay is due to the breakdown process, during which acids are released that attack the tooth enamel.

The impact of diet

Diet has a significant influence on the rapid development of tooth decay. Sweet foods and tooth decay form a vicious circle, as the link between carbohydrates and tooth decay is very close. 

When we consume foods rich in sugars and refined carbohydrates, the bacteria in dental plaque use them as a source of energy, producing acids as a by-product. These acids demineralise the enamel and lead to tooth erosion.

Structural and genetic factors

The strength of enamel depends on many factors, including genetic predisposition and lifestyle. With a balanced diet during childhood, enamel becomes more resistant to acid attack. Furthermore, tooth decay and saliva are interlinked. Saliva has a protective function, neutralising acids and remineralising the enamel. With reduced saliva flow, the risk of tooth decay increases significantly.

Symptoms of tooth decay

The insidious nature of tooth decay lies in the fact that in its early stages it is asymptomatic. Symptoms of tooth decay only appear once the damage has reached a significant stage.

Early signs

In the initial phase, white or brown spots are observed on the tooth surface, representing areas of demineralisation. The enamel may appear dull and rough to the touch. In advanced cases, a visible change in tooth colour occurs, such as darkening, yellowing or the formation of dark brown patches.

Advanced symptoms

When tooth decay progresses to the dentine, the tooth becomes sensitive to temperature changes and sweet foods. The pain typically associated with tooth decay ranges from mild discomfort to intense, sharp pain, particularly when consuming cold, hot or sweet foods and drinks. 

The appearance of visible cavities and holes in the tooth, as well as fragmentation of the tooth structure, are signs of an advanced stage. In the most severe cases, when tooth decay reaches the dental pulp, pulpitis develops and the decay progresses to an acute inflammatory condition with severe spontaneous pain.

Image: freepik

What are the treatment methods?

Treatment for caries is selected on an individual basis depending on the stage of the disease and the extent of damage to the tooth structure.

Fluoride therapy

In the early stages of caries, when there is only demineralisation of the enamel without the formation of a cavity, fluoride therapy is used. This method aids the remineralisation of the affected areas and strengthens the enamel, thereby helping to prevent caries.

Cavity filling

The most common method is filling a cavity. After numbing the area, the dentist completely removes the decayed tissue. The resulting cavity is disinfected and prepared in a specific way, after which it is filled with a suitable material. 

Crowns and extensive restorations

In cases of extensive decay, where a large part of the tooth structure is compromised, a dental crown is required. This ensures not only the restoration of function but also the protection of the remaining tooth tissue.

Endodontic treatment

When deep caries reaches the pulp and pulpitis develops, root canal treatment is required. This involves removing the inflamed tissue, cleaning and disinfecting the root canals, followed by their filling. After successful root canal treatment, the tooth is restored with a filling or a crown.

How does the process work at Dentatime Clinic?

At Dentatime Clinic, our approach to treating tooth decay is based on the most modern methods and technologies in dental medicine. The process begins with a detailed clinical examination, during which Dr Radoslav Simeonov and the clinic team carry out a thorough assessment of the condition of the teeth. 

We use digital radiography for precise diagnosis, which allows us to detect even hidden caries, particularly caries between teeth that are not visible during a visual examination.

Once the diagnosis has been established, an individual treatment plan is drawn up, with particular attention paid to ensuring the procedures are pain-free. We use modern anaesthetics and pain relief methods, ensuring maximum comfort. 

During treatment, we completely remove the decayed tissue, whilst striving to preserve as much healthy tooth structure as possible. We use top-quality materials that ensure durability and an aesthetic appearance.

How does the preparation for treatment take place?

Preparation for caries treatment begins with an initial consultation, during which a detailed medical history is taken regarding the patient’s general health, any allergies to medication, and other important details. 

A professional teeth cleaning is carried out to completely remove plaque and tartar, which ensures optimal conditions for the subsequent treatment and an accurate assessment of the tooth colour when selecting the filling material.

Risks and complications if treatment is neglected

Neglecting timely treatment leads to a number of serious consequences that significantly complicate the condition and require more invasive and expensive interventions.

The main risks include:

• Pulpitis and caries – when caries reaches the dental pulp, painful inflammation of the neurovascular bundle develops, requiring root canal treatment.
• Periapical abscess – if pulpitis is left untreated, the infection can spread to the bone tissue around the tooth root and form a pus-filled pocket.
• Tooth loss – extensive caries damage may render the tooth unsalvageable, necessitating extraction and subsequent implant-based restoration.
• Spread of infection – bacteria can enter the bloodstream and lead to systemic complications.
• Formation of dental cysts – chronic infection can stimulate the formation of cystic lesions in the bone.

The complications of untreated caries go far beyond local problems in the oral cavity. Chronic dental infection and inflammation can have an adverse effect on overall health. 

Scientific research has established a link between chronic oral infections (including deep tooth decay and periodontitis) and an increased risk of systemic diseases such as cardiovascular problems and diabetic complications. 

In pregnant women, oral infections are associated with an increased risk of preterm birth. Furthermore, the pain, discomfort and unpleasant sensations caused by tooth decay significantly hinder eating and impair quality of life.

Post-operative care and recovery period

The recovery period following treatment is usually short and uneventful. In the first few hours after the procedure, it is normal to feel a slight tingling sensation in the area where anaesthesia was administered, which subsides within 2–4 hours. During this period, it is recommended to avoid eating to prevent accidental injury to the soft tissue.

Maintaining excellent oral hygiene is of key importance. Teeth should be brushed twice daily with fluoride toothpaste, using soft to medium-firm brushes. 

These teeth-cleaning techniques are complemented by the mandatory use of dental floss or interdental brushes to clean the spaces between the teeth, where plaque often accumulates. The use of an antibacterial mouthwash is recommended, especially after meals.

Regular check-ups every 6 months are essential for the early prevention of tooth decay.

Conclusion

Tooth decay is a serious infectious disease that requires timely diagnosis and treatment. Tooth decay in children and tooth decay in adults differ in their location and progression, but in both cases early intervention is crucial. 

At Dentatime Clinic, we have the expertise, state-of-the-art equipment and top-quality materials to provide our patients with effective and pain-free treatment for caries.

Do not delay your visit to a dental specialist. Timely treatment saves teeth and prevents serious complications. For a consultation and to book an appointment at the Dentatime clinic, please contact us on +359 892 600 602.

Frequently asked questions

Can tooth decay be passed from one person to another?

Yes, tooth decay is an infectious disease and the bacterium Streptococcus mutans can be transmitted through saliva, particularly through kissing and sharing cutlery.

Myths and facts – is it true that tooth decay in children’s milk teeth does not require treatment?

This is a dangerous myth. Untreated tooth decay in milk teeth can damage the buds of the permanent teeth, cause pain and infection, and disrupt the proper development of the jaws.

How can we prevent tooth decay?

The key lies in perfect oral hygiene, limiting sugary foods, regular professional teeth cleaning, and dental check-ups every six months for early diagnosis.