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Updated: May 22, 2026

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Ectopic third molar in the maxillary sinus.

Shishir Mohan¹, Hasti Kankariya, Bhupendra Harjani

¹K. D. Dental College and Hospital, NH 2 Chatikara, Mathura, Uttar Pradesh, India.

National Journal of Maxillofacial Surgery

|May 29, 2012

Summary

This summary is machine-generated.

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Ectopic teeth are rare, but a maxillary third molar was found in the sinus causing chronic sinusitis. This case highlights unusual tooth eruption sites and their sinonasal complications.

Area of Science:

Dentistry
Otolaryngology
Pathology

Background:

Ectopic tooth eruption, outside the oral cavity, is uncommon.
Reported sites include the nasal septum, palate, chin, and maxillary sinus.
Maxillary sinus teeth can cause sinonasal symptoms mimicking chronic sinusitis.

Observation:

A case of an ectopic maxillary third molar is presented.
The tooth was located within the right maxillary sinus.
This caused chronic purulent sinusitis.

Findings:

Ectopic eruption of a third molar into the maxillary sinus can lead to chronic purulent sinusitis.
Sinonasal symptoms may be the primary presentation of this rare condition.

Implications:

Keywords:

Ectopic eruption maxillary antrum third molar

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Last Updated: May 22, 2026

Lateral Molar Approach-Driven Transoral Endoscopic Procedure for Benign Infratemporal Fossa Tumor Resection

Lateral Molar Approach-Driven Transoral Endoscopic Procedure for Benign Infratemporal Fossa Tumor Resection

Published on: August 15, 2025

Highlights the importance of considering ectopic teeth in the differential diagnosis of chronic maxillary sinusitis.
Underscores the need for thorough diagnostic evaluation in persistent sinonasal conditions.
Informs dental and medical practitioners about rare dental anomalies and their potential complications.