Everything You Need to Know About Tooth Fillings and Composite Fillings
Cavities are one of the most common dental problems — but they’re also one of the easiest to fix. A teeth filling is a simple, routine procedure used to repair decayed or damaged teeth and restore both function and appearance. Thanks to modern materials and techniques, tooth fillings are more comfortable and natural-looking than ever.
If you’ve been told you need a filling or are experiencing tooth sensitivity, here’s what you should know — including why composite fillings are a popular choice.
What Is a Tooth Filling?
A tooth filling is a restorative dental treatment used to fill a cavity or repair a small area of tooth damage. The goal is to stop further decay, protect the tooth structure, and prevent pain or infection. Fillings also restore the tooth’s shape and allow you to chew and speak normally.
Common reasons for a teeth filling include:
Tooth decay or cavities
Cracked or broken teeth
Worn-down teeth due to grinding (bruxism)
Small chips or damage from injury
Types of Tooth Fillings
There are several types of materials used for tooth fillings, each with their own pros and cons:
Composite Fillings: Made from a tooth-colored resin, these are popular for their natural look and strong performance. They bond directly to the tooth and are ideal for both front and back teeth.
Amalgam Fillings: A silver-colored metal alloy used for decades, known for its durability but less popular today due to its appearance.
Ceramic Fillings: Porcelain-based and highly aesthetic, often used in more visible areas.
Glass Ionomer Fillings: Often used for children or near the gumline; they release fluoride but are less durable.
Among these, composite fillings are the most commonly used today due to their strength and ability to blend seamlessly with natural teeth.
Why Choose a Composite Filling?
A composite filling offers many advantages:
Aesthetic appearance: Matches the natural color of your teeth
Minimally invasive: Less drilling required compared to amalgam
Strong bonding: Bonds directly to the tooth surface
Quick and safe: Usually completed in one visit
While composite fillings may cost slightly more than amalgam, many patients find the improved appearance and comfort worth the difference.
What to Expect During a Teeth Filling Procedure
Examination and X-rays: Your dentist will check the tooth and determine the extent of the decay.
Numbing the area: Local anesthesia is used to ensure a pain-free experience.
Removing the decay: The damaged portion of the tooth is carefully removed.
Placing the filling: The dentist places the chosen material — often a composite filling — and shapes it to match your natural tooth.
Polishing: The filling is hardened with a curing light and polished for comfort and appearance.
The whole process typically takes under an hour per tooth.
How Long Do Fillings Last?
The lifespan of a tooth filling depends on the material used and your oral habits:
Composite fillings: Last 5 to 10 years on average
Amalgam fillings: Can last 10 to 15 years
Ceramic fillings: Up to 15 years with good care
To prolong the life of your filling, maintain good oral hygiene, avoid biting hard objects, and schedule regular dental check-ups.
Need a Tooth Filling?
If you’re experiencing pain, sensitivity, or think you may have a cavity, don’t wait. Getting a teeth filling early can prevent more serious issues like infections, root canals, or tooth loss. Talk to your dentist about whether a composite filling is right for you — it’s a safe, effective way to protect your smile.