Coronectomy – an alternative to third lower molar extraction
DOI:
https://doi.org/10.5335/rfo.v25i3.13329Keywords:
impacted tooth; third molar; mandibular nerve.Abstract
Objective: to report a case of coronectomy with
follow-up of 15 months. Case report: coronectomy
is an alternative treatment for impacted lower third
molars (3ML) which are close to the mandibular
canal, minimizing the risk of sensorineural morbidity.
The technique consists of removing only
the dental crown (at the cementoenamel junction)
with intentional retention of the roots and pulp,
avoiding direct or indirect damage to the inferior
alveolar nerve (IAN). The procedure was performed
on an adult male patient with impacted 3ML.
Panoramic radiograph showed darkening of the
roots, suggesting a close relationship between the
roots and the mandibular canal. At immediate postoperative follow-up, the patient returned with
no painful symptoms, no significant facial edema,
good healing, and no loss of sensation or masticatory
dysfunction. Radiographic follow-up showed
bone neoformation adjacent to the root remnants.
Final considerations: coronectomy has been shown
to be a simple, effective and safe procedure
to decrease the risk of injury to IAN during 3MI
treatment.
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