Tooth-colored fillings.
Repair that disappears into the tooth
The essentials
In short
A tooth-colored filling is a composite resin bonded directly into a cleaned cavity and cured hard with a light. It matches the surrounding enamel, bonds to the tooth rather than being wedged in, and needs less healthy structure removed than a metal filling. Composite is the right choice for small to moderate cavities; once a cavity is large enough that little tooth wall remains, a crown or onlay protects the tooth better than a bigger filling would.
What happens during the appointment
The tooth is numbed. Decayed tissue is removed: only the decay, plus the minimum needed for access. The cavity is cleaned, conditioned and primed so the adhesive can bond into the microscopic structure of the tooth. Composite is placed in layers, each cured with a blue light, and shaped to match the tooth’s original anatomy. Then your bite is checked, the filling adjusted and polished.
The whole thing usually takes twenty to forty minutes for a single tooth.
Why bonding matters
An amalgam filling is held in mechanically: the cavity has to be shaped with undercuts to trap it, which means removing sound tooth that was not diseased. A bonded composite adheres to the prepared surface, so the preparation can follow the decay rather than a required shape. Over a lifetime of repeat treatment, the tooth structure you keep is what determines whether the tooth survives.
When a filling is the wrong answer
If more than about half the tooth’s width is gone, a filling has nothing to lean on. The remaining walls flex under chewing load and eventually crack, frequently below the gumline where the tooth cannot be saved. In those cases the honest recommendation is an onlay or crown, which caps and holds the tooth together rather than filling a hole in it.
We will tell you which side of that line your tooth is on, and why.
Aftercare
Eat normally once the numbness is gone. Composite is fully set when you leave, unlike amalgam. Expect a few days of cold sensitivity. If the tooth feels high or you catch it when biting, come back; a high filling is uncomfortable and can bruise the ligament.
What affects the cost
Fillings are priced by the number of tooth surfaces involved, so a small single-surface repair costs considerably less than a three-surface rebuild. Most dental plans cover composite fillings, although a minority still reimburse posterior composites at the amalgam rate and bill the difference to you. We will check that specifically, because it is a common surprise.
Talk it through first
Nothing here replaces an examination. If you are weighing this up, the useful next step is a conversation. Bring your questions, bring what you have been told elsewhere, and ask what the alternatives cost over ten years rather than this month.
Oak Hills Dentistry is on Louetta Road in Spring, Texas, and also sees patients from The Woodlands and north Houston. Request an appointment or call 281-350-8852.
Written for patients of Oak Hills Dentistry in Spring, Texas. General dental education, not a diagnosis or a treatment plan for any individual. Updated August 2026.
The practice
Where the work happens.
FAQ
Know before you visit.
Answers to your most common questions.
Commonly five to fifteen years, depending on size, position, your bite forces and your hygiene. Small fillings in low-stress areas last longest. Large fillings on chewing surfaces of back teeth take the most punishment and fail soonest, which is where a crown or onlay starts to make more sense.
Cold sensitivity for a few days to a couple of weeks is common, particularly for a deep filling near the pulp. It should trend downward. Sensitivity that worsens, or a sharp pain on biting, means the filling may be marginally high or the pulp is irritated. Call us; adjusting a high spot takes two minutes.
For anything but the shallowest surface repair, yes. Dentine is sensitive and cleaning a cavity without anesthetic is unpleasant. Nitrous oxide is available if injections are the part you dread.
Modern composites are strong enough for most locations and have the significant advantage of bonding to the tooth, which means less drilling. On very large chewing surfaces in heavy grinders, amalgam historically held up marginally longer, but in those cases the better answer is usually a crown or onlay rather than either filling material.
Yes. It requires a band and wedge to rebuild the wall of the tooth and re-establish a proper contact and contour, which is fiddlier than a filling on a flat surface and matters a great deal: a poorly shaped contact traps floss and food and causes the next cavity.
Start your smile journey.
Tell us how to reach you and we will call to talk through tooth-colored fillings, no commitment.