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Stopping Decay Before It Takes the Whole Tooth
Dental fillings in Scarborough for repairing cavities and restoring tooth structure damaged by decay
Tooth decay that is caught and filled while it is still confined to the outer layers of the tooth is a straightforward repair. Left in place, that same cavity works through the enamel into the softer dentin beneath, and eventually reaches the pulp — at which point the repair changes from a filling to a root canal. Nathan Goff DMD treats cavities in Scarborough at the filling stage specifically to keep the damage from advancing to a point where more involved treatment becomes necessary. The difference in outcome between early and delayed treatment is mechanical and entirely predictable.
The filling process involves removing the decayed material from the tooth, preparing the cavity walls so the filling material bonds cleanly, and restoring the tooth to a shape that functions correctly under bite pressure. Tooth-colored composite resin is used when appropriate, which means the restored tooth does not carry the visual signal of dark amalgam at the surface. The material is placed in layers and cured with a light source, then shaped and polished so the bite feels normal and the surface is smooth enough that it does not trap additional plaque at the margin.
To address a cavity or a tooth that has been sensitive to sweets, cold, or pressure, schedule a filling appointment with Nathan Goff DMD to assess what is happening and restore the tooth.
Composite fillings require clean, dry tooth structure to bond correctly. One of the procedural decisions made during the appointment is how to isolate the tooth from saliva during placement, because moisture contamination at the bonding stage undermines how well the material adheres to the cavity walls. When the bond is properly achieved, the filling functions as part of the tooth structure rather than sitting on top of it — a distinction that affects how long the restoration holds up under normal chewing forces.
After a filling is placed and the anesthetic wears off, the tooth should feel normal under bite pressure. If there is persistent sensitivity to temperature or biting force in the days after placement, that is information worth reporting — it can indicate the bite needs a minor adjustment or, in some cases, that the decay was closer to the pulp than the initial depth suggested. Observable sensitivity that was present before the filling should be gone once the decayed tissue has been fully removed and the tooth is sealed.
The size and location of the cavity also determines what type of restoration is appropriate. A small interproximal cavity between two teeth is a different clinical situation than a large cavity on a cusp-bearing surface. When a tooth has lost enough structure that a filling alone would not provide adequate support, a different restoration — such as an inlay, onlay, or crown — may be the more appropriate solution, and Nathan Goff DMD will walk through that evaluation with you before proceeding.
What Patients Ask About the Filling Process
The following questions address how dental fillings are placed, what materials are involved, and what you will notice during and after the appointment.
How is the decayed portion of the tooth removed before the filling is placed?
A dental handpiece removes the softened, decayed enamel and dentin, and a smaller instrument called a spoon excavator may be used near the pulp to carefully remove decay without disturbing healthy tissue beneath it.
What makes tooth-colored composite different from older amalgam fillings in terms of how it is placed?
Composite is placed in incremental layers that are each cured with a polymerization light before the next layer is added, which reduces shrinkage stress on the cavity walls — a sequencing step that amalgam placement does not require.
How do you know when a filling needs to be replaced?
The margin between the filling and the tooth structure can wear over time, creating a gap where bacteria enter and secondary decay begins, which is detectable on radiographs at routine hygiene visits before it becomes symptomatic.
Why does tooth sensitivity sometimes persist for a short period after a filling?
Composite resin shrinks slightly as it cures, which can create minor internal stress in the tooth structure, and deeper cavities are placed closer to the pulp where the dentin tubules transmit temperature sensation more readily.
What factors determine whether a cavity can be filled or needs a more extensive restoration?
The depth of the decay, how much healthy tooth structure remains, and whether the cavity has undermined a cusp or load-bearing surface are the primary considerations that guide whether a filling is structurally appropriate or a crown is warranted.
If you have a tooth that has been sensitive or a cavity identified at your last cleaning, Nathan Goff DMD can evaluate the extent of the decay and complete the filling in a single appointment in most cases.