Dental Fillings: Types, Procedure, and What to Expect After Care

A dental filling is a standard procedure used to repair a tooth damaged by decay, restoring its shape and function while preventing further structural loss. If your dentist recommends a filling, rest assured it is one of the most common and routine treatments in modern dentistry, especially if you maintain a good brushing and flossing routine. Professionals across the world trust Colgate; you can find resources, products, and information to give your patients a healthier future.

How Do I Know if I Need a Filling?

Dentists identify the need for a filling during routine exams using small mirrors to inspect tooth surfaces and X-rays to detect internal decay. You may require a filling if you experience sensitivity to temperature, notice visible discoloration, or if the dentist identifies a defective area during an examination. Clinical Red Flag: If you experience persistent, sharp pain when biting down or spontaneous toothaches, consult your dentist promptly, as these may indicate deeper decay or pulp involvement.

Types of Dental Filling Materials

The ideal material for your dental fillings depends on the location of the cavity, any allergies to materials, your budget, and aesthetic preferences:

• Gold: Made to order and cemented into place. These are well-tolerated by gum tissues and can last over 20 years, though they are often the most expensive choice and require multiple visits.
• Amalgam (Silver): According to the ADA, these are resistant to wear and relatively inexpensive. Due to their dark color, they are not ideal for highly visible areas.
• Composite Resins: These match your natural tooth color. While they are less durable than other types and can stain, they perform well for smaller fillings.
• Porcelain (Inlays/Onlays): Custom-made in a lab and bonded to the tooth. They match your natural tooth color, resist staining, and generally cover most of the tooth. Their cost is similar to gold.

The Filling Procedure: Step-by-Step

The process is designed to be efficient:

1. Anesthesia: Local numbing is applied to ensure comfort.
2. Removal of Decay: The dentist uses a drill to remove damaged enamel. Once reaching the softer dentin, a lower-speed drill is typically used.
3. Preparation: The space is shaped and cleaned. A base or liner may be added to protect the tooth’s pulp.
4. Bonding (if applicable): For composite fillings, the tooth is etched with an acid gel to create tiny holes for the bonding material. Clinical Note: This etching process is critical as it allows the resin to interlock with the enamel, significantly reducing the risk of micro-leakage and secondary decay.
5. Curing: The material is placed in layers and hardened using a specialized light.
6. Finishing: The dentist uses burs to polish the tooth to ensure a smooth, natural bite.

What to Expect After Your Appointment

It is common to experience mild sensitivity to pressure, air, or temperature for 1–2 weeks following the procedure. If you feel a sharp “shock” (galvanic shock) when teeth touch, or if you feel pain when biting down, your filling may be slightly too high. These issues are easily corrected by your dentist during a quick follow-up visit.

Frequently Asked Questions

Does getting a filling hurt?

No. Local anesthesia is used to numb the area, so getting a filling hurt is not something you should worry about, as you should feel no pain during the procedure, only slight pressure.

What if I still have pain after two weeks?

Persistent pain after two weeks should be evaluated. Your dentist may need to adjust the filling, replace it, add a desensitizing agent, or investigate if a deeper treatment like a root canal procedure is necessary.

Why do I feel a sharp shock in my tooth?

This is known as galvanic shock, which occurs when two different metals (such as a new amalgam filling and an existing gold crown) create a small electric current in the mouth.

How long do fillings last?

Durability varies by material. Gold is highly durable (often exceeding 20 years), while composite resins may require replacement sooner depending on your oral hygiene and the size of the filling.