Sealing the wrong turn.
A drill searching for a canal went 2mm past where it should have — straight into the furcation. Three hours later the hole was sealed, and three years later the tooth is still here.
One tooth's journey, in four beats.
The call every dentist dreads.
Searching for a distal canal, the referring dentist drilled slightly too far and perforated into the furcation of a 68-year-old Carson patient's molar. He did exactly the right thing: stopped immediately and called.
A race against contamination.
Every hour a perforation stays open, bacteria colonize the defect and the odds fall. Seen within three hours — inside the window where repair succeeds about 90% of the time.
A seal in the dark.
Bleeding controlled with calcium chloride, the 2mm defect isolated under the microscope, and MTA — biocompatible, antibacterial, moisture-tolerant — packed into the perforation.
Finished properly.
After the MTA set, the root canal was completed over the repair. Three years on: normal probing depths, bone maintained, no symptoms — a functioning tooth instead of an implant.
- ✦ Hemostasis first — calcium chloride pellets to control the bleeding
- ✦ Dry field established under the microscope; defect isolated
- ✦ MTA packed into the 2mm furcation perforation at high magnification
- ✦ 48–72 hours for the MTA to fully set
- ✦ Second visit — root canal treatment completed over the sealed repair
- ✦ Recalls: normal probing depths, bone maintained at 3 years
What this case teaches.
More from the collection.
- Out, repaired, and home again — A failing root canal locked behind a large metal post — unreachable from above, impractical from the side. So the tooth came out, was repaired in fifteen minutes, and went back in.
- Six problems, one tooth — A failing root canal hiding a separated file, a calcified canal, a missed canal, internal resorption, and a crack — quiet and healed 3.4 years after retreatment.
- Scheduled for extraction, still here — Another provider said the tooth had to go — a perforation, a draining sinus tract, a root canal that had failed. Five years after combined retreatment and surgical repair, it's still doing its job.
A complication mid-treatment? Call now, not later.
Same-day repair is the difference between a saved tooth and a lost one. We prioritize these calls.