Retrograde penetration of the posterior lateral wall of the maxillary sinus during extraction of impacted maxillary third molars: report of two cases

doi:10.19438/j.cjoms.2026.04.017

Abstract

Abstract: This paper presented two rare cases of accidental displacement of maxillary impacted third molars into the posterior lateral wall of the maxillary sinus during extraction at a local hospital. The diagnosis, management, and clinical data of these referred cases were described in detail. Combined with a literature review, we discussed the etiology, diagnostic criteria, treatment strategies, and preventive measures for this uncommon complication. This report aimed to provide reference for clinicians and enhance their awareness and management capabilities regarding to such complications.

Key words: Maxillary third molars, Complications of tooth extraction, Maxillary sinus, Surgical treatment

CLC Number:

R782.1

Chen Zishan, Lei Rongchang, Guo Ge. Retrograde penetration of the posterior lateral wall of the maxillary sinus during extraction of impacted maxillary third molars: report of two cases[J]. China Journal of Oral and Maxillofacial Surgery, 2026, 24(4): 424-427.

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