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Excessive heat-associated gingival necrosis: a case report
P L Barnes1,2, G Rossi-Fedele3
1Ringley Park Dental Practice, Reigate, Surrey, UK.
Australian Dental Journal
|April 19, 2017
Summary
A dental patient experienced gingival necrosis after root canal retreatment due to excessive heat from a dental heat source. Fortunately, the soft tissues fully recovered within two years without intervention.
Area of Science:
- Endodontics
- Periodontics
- Dental Materials
Background:
- Heat-delivery devices in dentistry can reach high temperatures.
- Prior research indicated minimal risk to periodontal tissues from heat during root canal procedures.
- Root filling materials are thought to mitigate overheating risks.
Observation:
- A 45-year-old male patient underwent orthograde root canal retreatment for a maxillary left incisor.
- During the procedure, a System B Heat Source was used to sever core material after cold lateral compaction.
- The patient reported immediate pain and a burning sensation.
Findings:
- Gingival necrosis was observed on the central incisor the following day.
- Excessive heat during the procedure was identified as the likely cause of the complication.
- The patient's soft tissues fully regenerated over a 2-year follow-up period.
Implications:
- This case highlights a potential risk of thermal injury to gingival tissues during endodontic procedures.
- Careful control of heat application is crucial to prevent complications.
- Despite initial necrosis, complete soft tissue healing is possible without periodontal treatment.