Many patients eventually face the issue of secondary caries developing under an old filling. At first glance, the filling may look “intact,” but problems can already be forming underneath. In this case, the patient noticed that food was getting stuck between the teeth more frequently, and the filling on the chewing surface had begun to crumble.
Examination and Diagnostics
The examination revealed:
- an old, large filling on tooth 1.6 covering the occlusal and mesial contact surfaces,
- compromised marginal adaptation,
- secondary caries.
To clarify the condition, CBCT and periapical X-rays were taken. They showed that the tooth had undergone endodontic treatment many years ago in another clinic.
Treatment Stages
- Endodontic retreatment. The old root canal filling materials were removed and replaced to eliminate the risk of future inflammation.
- Preparation for restoration. All carious tissues were removed, and the cavity was disinfected.
- Tooth buildup. This procedure reconstructs the destroyed portion of the tooth using composite material. Typically, when more than 50% of the crown is missing, a post is required, but in this case, enough natural structure remained, allowing the buildup to be done without a post.
- Final restoration. The occlusal anatomy was fully reconstructed, marginal adaptation was sealed, and the restoration was adjusted to the bite and polished.
Result
Tooth 1.6 was restored to full function. The patient no longer experiences food impaction or discomfort while eating. The tooth is now prepared for a future crown, which will provide long-term protection against fracture and ensure its longevity.
Why This Matters
Many patients believe that if a previously treated tooth “doesn’t hurt,” they can ignore old fillings. In reality, these are the teeth that most often break down over time.
After root canal treatment, a tooth loses elasticity and becomes more brittle. Without reinforcement with a crown, it is at risk of fracturing — and in such cases, saving the tooth may no longer be possible. Timely retreatment and proper restoration are essential.
At DentalDate, we use modern techniques for restoring molars, including buildup procedures, which allow us to preserve even complex cases and prepare teeth for long-term prosthetic protection.
