A dental filling is one of the most common treatments in modern dentistry. Many of us have at least one filling, and those who do not have certainly heard of them.
However, despite fillings being so well-known, many patients do not fully understand what to expect when their dentist recommends one. They may be uncertain about what happens during a dental filling procedure, what fillings are made of, and which material is best for giving them a healthy, happy smile once again.
In this blog, we help you understand the types of dental fillings, how the tooth filling process works step by step, and what you can expect before, during, and after a tooth filling or cavity filling treatment.
What Is a Dental Filling?
A dental filling is a restoration used to restore the normal form and function of a tooth. During treatment, the dentist removes the affected area and fills the space with a durable material that restores the tooth’s shape and strength, protects the remaining structure, and seals the area to prevent further bacterial activity. The tooth will then function normally again.
Understanding how dental fillings work begins with recognizing that cavities rarely remain small. When left untreated, decay gradually spreads deeper into the tooth, eventually affecting its inner structure and requiring more complex treatment to repair.
A cavity filling is intended to stop that progression early, helping you preserve as much of your natural tooth as possible.
Composite Resin — The Modern Standard
At Yonge Eglinton Dental, all fillings are completed using composite resin, a modern tooth-coloured material designed to blend seamlessly with natural teeth.
Composite resin is created from a carefully engineered blend of plastic resin and microscopic glass particles, bonded with silane and cured via light or chemical activation to provide a durable compound that offers both strength and aesthetic appeal.
The material can be colour-matched to your teeth to give your smile a more uniform appearance.
We use composite resin or dental fillings as they offer a wide range of advantages to our patients, such as:
- The material bonds directly to the tooth structure, helping support the remaining tooth and adding stability to the restored area
- Less natural tooth structure needs to be removed to attach composite resin, which preserves the long-term integrity of the tooth
- Modern composites perform well in both front and back teeth
- Advances in dental materials have significantly improved composite resin’s durability and versatility, making it a reliable option for many types of cavities
- Composite fillings are hardened during the appointment using a special curing light, ensuring the restoration is fully set before you leave the dental chair
- The restoration is often virtually undetectable, whether you require a front tooth cavity filling or treatment for a molar
For many years, the predominant restoration material was amalgam. However, composite resin has replaced this due to its non-metallic appearance, bonding strength, and the absence of mercury, which is important to patients who prefer metal-free dentistry.
Although other materials still have specific uses, modern composite technology has advanced significantly, making it the preferred solution among dentists and patients for most routine cavity restorations.
The Dental Filling Procedure — Step by Step
For patients wondering how dental fillings are done, the process is typically straightforward and completed in a single visit.
Examination and Diagnosis
Before treatment begins, the dentist examines the affected tooth and may take X-rays to evaluate the extent of decay. This step ensures that the cavity is addressed thoroughly and that the most appropriate treatment approach is selected.
Local Anaesthetic is Applied
The area surrounding the tooth is numbed using a local anesthetic, often referred to as “freezing.” This allows the dentist to complete the procedure while keeping you comfortable.
Removing the Decay
Once the tooth is numb, the dentist carefully removes the decayed portion using specialized dental instruments. Only the affected tissue is removed, preserving as much healthy tooth structure as possible.
Preparing the Tooth
After the decay has been cleared, the cavity is cleaned and prepared so the filling material can bond securely to the tooth.
Placing the Filling
Composite resin is applied in thin layers. Each layer is carefully shaped to restore the tooth’s natural contours.
Curing the Material
A blue curing light is used to harden each layer of the composite. This process strengthens the material and bonds it firmly to the tooth.
Shaping and Polishing
Finally, the dentist adjusts the filling so your bite feels natural. The surface is polished to create a smooth, comfortable finish.
Most tooth filling procedures take between 30 and 60 minutes, depending on the size and location of the cavity. At Yonge Eglinton Dental, your comfort is our priority, and we do everything we can to help you feel confident while in our care.
What to Expect After Your Filling
Once the procedure is complete, the local anesthetic will gradually wear off over the following few hours. During this time, it is wise to avoid chewing on the treated side of the mouth. Once any feelings of numbness subside, you may eat and drink normally.
Some patients notice temporary sensitivity to hot, cold, or pressure after a filling. This is a normal response as the tooth adjusts to the new restoration. If sensitivity persists or your bite feels uneven, contact your dentist as soon as possible, as they may need to make small adjustments to the area.
Caring for Your Fillings
A filling restores a damaged tooth, but maintaining it still requires good oral hygiene to provide years of reliable function. Brushing twice daily and flossing once daily help prevent new cavities from forming around the restored area.
Routine dental visits also allow your dentist to monitor the condition of your fillings. This is especially important because, over time, fillings can wear or develop small gaps as teeth experience years of normal chewing forces. Regular checkups allow dentists to identify these changes early and recommend a replacement filling if needed.
Yonge Eglinton Dental: Prioritizing Comfort During the Filling Procedure
The team at Yonge Eglinton Dental has years of experience helping patients enjoy a safe, comfortable appointment while in our offices. We specialize in techniques that provide support and reassurance throughout the visit, especially for patients experiencing any doubt or anxiety about visiting the dentist.
Our mission is to provide quality dental care that delivers healthy, strong, and happy smiles for your entire family. Be sure to call us for your next dental checkup – we are here to help!
Enjoy Safe, Comfortable Dental Filling Treatment from our Dentists at Yonge and Eglinton
Contact Yonge Eglinton Dental when you are ready to optimize your oral health. We will work together to ensure your teeth and gums look great and are as strong and healthy as possible. Make an appointment for an office visit today by calling our office at 416-932-2222 or booking online. We look forward to seeing you!
Frequently Asked Questions About Dental Fillings
What are dental fillings made of?
At Yonge Eglinton Dental, fillings are made from composite resin, a tooth-coloured material composed of plastic resin and fine glass particles. Other materials used in dentistry include amalgam, ceramic, and gold.
How long does a dental filling take?
Most fillings are completed during a single appointment and typically take between 30 and 60 minutes.
Is the dental filling procedure comfortable?
Yes. Local anesthetic numbs the area, allowing treatment to be performed with minimal discomfort. Some temporary sensitivity afterward is normal.
How long do dental fillings last?
The lifespan of a filling varies depending on the material, the size of the restoration, and oral hygiene habits. Dentists evaluate fillings during routine checkups and recommend replacement when needed.
Can I eat after getting a filling?
Composite fillings are fully hardened during the appointment. Once the numbness from the anesthetic wears off, you can eat and drink normally.
Do old silver fillings need to be replaced?
Not necessarily. Existing amalgam fillings generally remain in place unless there is a clinical reason for replacement, such as wear or decay around the restoration.
Are fillings used for front teeth different from those used for back teeth?
Composite resin is commonly used for both. Its tooth-coloured appearance makes it particularly suitable for visible front teeth while still providing durability for back teeth.
