Root Fragment Vitality After Coronectomy: Histological Evidence in a Case.

Purpose: Coronectomy is a well-documented surgical technique for the treatment of high-risk third molars, but the fate of retained roots remains controversial. This case report describes the histologic analysis of retained root fragments.

Patient And Methods: A 44-year-old man treated with coronectomy of a left mandibular third molar requested the extraction of the retained roots. The patient was asymptomatic and the retained roots were extracted 18 months after coronectomy at the patient's request.

Results: The extracted roots were histologically evaluated and the results showed the presence of vital pulp tissue.

Conclusion: Histologic analysis showed that retained roots remain vital after coronectomy.