The process involves removing the decayed portion of the tooth and filling the resulting space with a suitable dental material.

The steps for a dental filling typically include:

1. Numbing the area: Before the procedure begins, the dentist administers a local aesthetic to numb the area around the affected tooth, ensuring that the patient remains comfortable during the process.
2. Removing decay: Using a dental drill, laser, or air abrasion instrument, the dentist removes the decayed or damaged part of the tooth. The goal is to eliminate all traces of decay to create a clean and healthy foundation for the filling.
3. Filling placement: Once the decay is removed, the dentist fills the cavity with a restorative material. Common filling materials include amalgam (silver-coloured), composite resin (tooth-coloured), gold, or porcelain. The choice of material depends on factors such as the location of the tooth, the extent of the decay, and aesthetic preferences.
4. Shaping and polishing: After the filling material is placed, the dentist shapes it to match the natural contours of the tooth and ensures a proper bite. The filling is then polished to enhance its appearance and functionality.

Dental fillings help restore the tooth's structure, prevent further decay, and enable normal tooth function. The type of filling material used can vary, and dentists consider factors like durability, aesthetics, and the patient's individual needs when making this decision. Regular dental check-ups aid in identifying and addressing cavities early, minimising the extent of decay and the need for more extensive treatments.

Tooth decay occurs when bacteria in the mouth produce acids that erode the enamel, creating small holes or cavities in the tooth. The reasons you might need a dental filling include:

1. Cavities: The most common reason for a dental filling is the presence of cavities caused by decay. Fillings restore the affected tooth's structure and prevent further decay.
2. Fractures or cracks: Teeth may develop fractures or cracks, often due to trauma or biting on hard objects. Fillings are used to repair and reinforce the damaged tooth structure.
3. Worn tooth enamel: Over time, tooth enamel can wear away, leading to areas of vulnerability. Fillings can be used to protect and restore teeth with worn enamel.
4. Abrasion or erosion: Excessive toothbrush abrasion or erosion from acidic foods and beverages can lead to weakened areas on the teeth. Fillings may be used to repair these areas and prevent further damage.
5. Replacing old or damaged fillings: Existing fillings may degrade or become damaged over time. Replacing them ensures ongoing protection for the tooth.
6. Cosmetic purposes: Tooth-coloured fillings can be used for cosmetic reasons, such as repairing chipped or discoloured teeth.

Regular dental check-ups are essential for early detection of cavities and other dental issues that may require fillings. Addressing these problems promptly helps prevent the need for more extensive and invasive dental treatments in the future.

On average:

1. Composite fillings: Composite resin fillings (tooth-coloured) are aesthetically pleasing but may not be as durable as amalgam. They generally last around 5 to 10 years, although advancements in materials continue to improve their longevity.

The location of the filling also affects its lifespan. Fillings in areas that experience significant biting force, such as molars, may wear out faster than those in less-stressed areas.

Maintaining good oral hygiene practices, including regular brushing, flossing, and routine dental check-ups, contributes to the longevity of fillings. Avoiding habits like teeth grinding (bruxism) and minimising exposure to acidic foods and beverages can also help extend the life of dental fillings.

Regular dental check-ups allow dentists to monitor the condition of fillings and detect any signs of wear or deterioration. If a filling shows signs of damage or wear, the dentist may recommend replacement to prevent further issues. Overall, the lifespan of a dental filling is influenced by various factors, and individual experiences may vary.

There are a few considerations to keep in mind:

1. Temporary sensitivity: It's common to experience some sensitivity in the filled tooth immediately after the procedure. This sensitivity can be temporary and may be more noticeable with hot, cold, or sweet foods. As your tooth adjusts, this sensitivity should diminish.
2. Avoid hot and cold foods: It's advisable to avoid extremely hot or cold foods and beverages immediately after the filling, especially if you have temporary sensitivity. Opt for lukewarm or room temperature items.
3. Watch for numbness: If your mouth is still numb after the procedure, be cautious when eating to avoid accidentally biting your cheek, tongue, or lips.
4. Chewing: While you can generally resume normal chewing after getting a filling, try to be gentle, especially if the tooth was treated for a deep cavity or if you have any postoperative discomfort.
5. Follow post-operative instructions: Your dentist may provide specific post-operative instructions, which might include dietary recommendations or restrictions. Follow these guidelines to ensure optimal healing.
6. Maintain good oral hygiene: Continue with your regular oral hygiene routine, but be gentle around the filled tooth. Avoid vigorous brushing or flossing in the immediate area.

If you experience persistent discomfort, increased sensitivity, or notice any issues with the filling, contact your dentist promptly. It's essential to attend any follow-up appointments recommended by your dentist to monitor the healing process and address any concerns.