Dental Fillings

The placement of a composite filling involves a sequence of clinical procedures designed to restore the tooth’s structure, function, and appearance. Initially, the dentist examines the affected tooth and administers local anesthesia when necessary to maintain patient comfort. The decayed or damaged tooth structure is then removed, and the cavity is carefully prepared while preserving as much healthy dental tissue as possible.

The prepared tooth is isolated from saliva and moisture because contamination can interfere with the bonding process. An etching agent, commonly phosphoric acid, is applied to the enamel and sometimes the dentin to create a surface that promotes adhesion. A bonding agent is subsequently applied to establish a strong connection between the natural tooth structure and the restorative material.

The composite resin is then placed into the cavity, usually in small increments, with each layer hardened using a visible blue curing light. This process, known as photopolymerization, converts the resin from a moldable material into a rigid restoration. After the cavity has been completely restored, the dentist shapes the composite to reproduce the tooth’s natural anatomy, evaluates the patient’s bite, makes any necessary adjustments, and polishes the restoration to achieve a smooth and functional surface.

Composite fillings are often preferred over amalgam fillings because they provide superior esthetic and conservative restorative advantages. Their tooth-colored appearance allows them to blend closely with natural enamel, making them particularly suitable for visible areas of the mouth. In addition, composite materials bond directly to enamel and dentin through adhesive systems, which can reduce the amount of healthy tooth structure that must be removed during cavity preparation.

Composite restorations also do not contain mercury, a component of dental amalgam that has contributed to environmental and patient concerns. Another advantage is that composite resin can be repaired or added to relatively easily if part of the restoration becomes damaged. However, composite fillings may be more technique-sensitive to place and, in some situations, may have a shorter service life than well-placed amalgam restorations, particularly in large restorations exposed to heavy biting forces. Overall, composites are commonly favored because they combine natural appearance, adhesive bonding, and preservation of tooth structure.

Composite fillings are tooth-colored restorative materials primarily composed of a resin-based polymer matrix reinforced with inorganic filler particles, such as silica or glass. They are commonly used to restore teeth affected by dental caries, fractures, or minor structural defects because their color and translucency can be closely matched to natural tooth structure.

During placement, the dentist first removes the decayed or damaged tooth tissue and prepares the remaining surface for bonding. An adhesive system is then applied to establish micromechanical and chemical adhesion between the composite material and the enamel and dentin. The composite resin is typically inserted in small increments and polymerized using a visible blue curing light, which initiates a chemical reaction that converts the material from a moldable resin into a rigid restoration. Once hardened, the filling is shaped, adjusted to the patient’s bite, and polished.

Unlike traditional amalgam restorations, which depend largely on mechanical retention within the prepared cavity, composite restorations bond directly to tooth structure. This adhesive mechanism can allow for more conservative removal of healthy dental tissue while restoring the tooth’s anatomy, function, and esthetic appearance.

The lifespan of a filling varies:

• Amalgam fillings: 10–15 years.
• Composite fillings: 5–10 years.
• Gold and ceramic fillings: Can last decades with proper care.

In the past, metal fillings were most common. Modern-day fillings come in a variety of different materials, including porcelain, composite, and traditional amalgam.

When deciding which type of filling will work best for you, it’s important to consider cost, location of the filling, and what your insurance is willing to cover. In some cases, insurance covers the cost of the functional filling, but won’t cover more expensive materials used for aesthetic purposes. We’ll help you choose the best option based on your needs.

The cost of a filling varies based on the location of the filling and the material used. For example, gold fillings cost more than amalgam fillings. We can provide you with estimates for a variety of different filling materials so you can make the best choice for you.

Crowns and bridges are used to replace, reinforce, and improve badly damaged or missing teeth. Both are permanently affixed to your tooth. They might fall out or your dentist can remove them, but they typically remain in place for many years.

Crowns cover the entire tooth. They are most often used when decay affects a large portion of the tooth and a filling is not enough to protect the tooth and root. A bridge is a row of artificial teeth that are anchored into implants that are surgically placed in the jaw bone. It is used to replace one or more missing teeth.