When we tell a patient at North Pointe Dental Center that a tooth needs a filling, the next question is almost always the same: what kind? It is a better question than most people realize. The material we use to restore a tooth affects how the repair looks, how long it lasts, how it handles chewing pressure, and in some cases how much of the healthy tooth we need to reshape to place it. Understanding the main tooth filling types before your appointment makes that conversation easier, and it helps you feel confident that the choice we make together fits your tooth, your bite, and your budget.
Why the Filling Material Matters
A filling does more than plug a hole. Once decay is removed, the material we place has to seal the tooth against bacteria, stand up to years of chewing, and expand and contract with hot and cold foods without pulling away from the enamel around it. Different materials handle those jobs differently. A molar that does heavy grinding work has different demands than a front tooth that shows every time you smile. That is why there is no single best filling, only the best filling for a particular tooth in a particular mouth.
Composite Resin Fillings
Composite resin is the material we place most often. It is a blend of plastic resin and fine glass particles that we shade-match to your natural enamel, so the finished repair is very hard to spot. Composite bonds directly to the tooth structure, which has two practical benefits: we can usually preserve more healthy tooth than with older materials, and the bond itself helps reinforce the remaining tooth.
Composite fillings are placed in layers and hardened with a curing light, then shaped and polished in the same visit. They handle everyday chewing well and typically last seven to ten years or more with good care, though large composites in heavy-biting areas can wear faster. For most small and medium cavities, especially anywhere visible, composite offers the best balance of appearance, strength, and conservative preparation.
Amalgam (Silver) Fillings
Amalgam is the traditional silver-colored material made from a mixture of metals. It has been used for well over a century because it is durable, affordable, and forgiving in hard-to-keep-dry areas of the mouth. Amalgam fillings routinely last ten to fifteen years and stand up well to strong chewing forces on back molars.
The trade-offs are cosmetic and structural. Silver fillings are visible when you laugh or yawn, they can darken over time, and placing them requires shaping the cavity in a way that sometimes removes more healthy tooth than a bonded composite would. Many of our patients still have sound amalgam fillings, and we do not recommend replacing them just because of the color; a solid, well-sealed filling is worth keeping regardless of material.
Ceramic Inlays and Onlays
When a cavity is too large for a routine filling but the tooth does not yet need a full crown, a ceramic inlay or onlay is often the strongest answer. These restorations are made of porcelain, milled or crafted to fit the prepared tooth precisely, then bonded in place. Ceramic resists staining better than composite, mimics the light-handling of natural enamel beautifully, and is highly durable, often lasting fifteen years or longer.
Because they are custom-fabricated, ceramic restorations cost more than direct fillings and can take an additional visit. We usually reserve them for larger repairs where a standard composite would be at risk of breaking down under chewing pressure.
Glass Ionomer Fillings
Glass ionomer is a tooth-colored material that releases a small, steady amount of fluoride, which helps protect the surrounding tooth from new decay. It is not as strong or polishable as composite, so we use it in specific situations: fillings near the gumline, baby teeth, root-surface cavities in patients with dry mouth, and as a protective liner under other restorations. In the right spot, its decay-fighting chemistry is a real advantage; on a biting surface, it would wear too quickly.
Gold Fillings
Gold inlays are less common today, but they remain one of the longest-lasting restorations in dentistry, frequently serving twenty years or more. Gold is exceptionally gentle on the opposing teeth it bites against. The obvious drawbacks are the metallic appearance and the higher cost, so gold tends to be chosen by patients who prioritize longevity on an out-of-sight molar.
How We Help You Choose
At our North Fort Myers office, the recommendation we make weighs several factors together:
- Location of the tooth. Front teeth call for the most natural-looking materials; back molars need maximum strength.
- Size of the cavity. Small cavities do well with composite; larger ones may need ceramic or a crown to prevent fracture.
- Your bite. Patients who clench or grind put far more force on their fillings, which changes the durability math.
- Moisture control. Some areas of the mouth are difficult to keep dry during bonding, which can favor amalgam or glass ionomer.
- Budget and insurance. Coverage varies by material, and we will always explain the cost difference before any work begins.
If you want a neutral second source before your visit, the American Dental Association’s guide to dental filling options is a good plain-language overview. Every option is explained in plain terms, and the decision is yours. Our dental fillings page covers more about how we restore decayed teeth, and you can browse our full range of dental services to see how fillings fit into your overall care.
What to Expect at a Filling Appointment
Most fillings are completed in a single visit of about thirty to sixty minutes. We numb the area so you stay comfortable, remove the decayed portion of the tooth, clean and disinfect the cavity, then place, shape, and polish the filling. Your lips and cheek may stay numb for a few hours, and mild sensitivity to cold for a week or two afterward is normal. If your bite feels high or sensitivity lingers beyond a few weeks, call us; a quick adjustment usually solves it.
Caring for Your Fillings
Fillings do not last forever, but you can add years to their life with simple habits: brush twice daily with fluoride toothpaste, floss so decay cannot start at the edges of the restoration, avoid chewing ice or hard candy, and keep your regular checkups so we can catch worn margins before they turn into bigger problems. If an older filling cracks, feels rough, or the tooth starts catching food, have it looked at promptly; small repairs are far easier than replacing lost tooth structure.
Frequently Asked Questions
Do fillings hurt?
The procedure itself should not hurt. We numb the tooth thoroughly before removing any decay, and most patients tell us the injection was the only part they felt. Mild soreness or cold sensitivity for a few days afterward is common and fades on its own.
How long do tooth fillings last?
It depends on the material and the tooth. Composite fillings typically last seven to ten years, amalgam ten to fifteen, and ceramic or gold restorations often fifteen to twenty or more. Good home care and regular checkups extend the life of any filling.
Should I replace my old silver fillings with tooth-colored ones?
Not automatically. If an amalgam filling is intact and sealing well, replacing it means removing more tooth structure for a cosmetic gain. We recommend replacement when a filling is cracked, leaking, or has decay around it, and we are happy to evaluate yours and give you an honest answer.
Can a cavity be too big for a filling?
Yes. When too little healthy tooth remains to support a filling, we will recommend an inlay, onlay, or crown instead so the tooth does not fracture under chewing pressure. Catching decay early is the best way to keep the repair small.
Schedule Your Visit
If you have been told you need a filling, or you suspect a cavity is forming, we will walk you through the options and help you choose the material that truly fits your tooth and your budget. Call North Pointe Dental Center in North Fort Myers at (239) 997-9949 or contact us online to schedule your appointment with Dr. David Pfent.
