CBCT Assessment of Ethmoid Roof Variations through Keros, Gera, and TMS Classifications.
Mina MahdianMitra Karbasi KheirPublished in: International journal of otolaryngology (2022)
The most prevalent variations of the ethmoid roof were Keros type II, Gera type II, and TMS type 1. Although the prevalence of the dangerous types (Keros type 3, Gera type III, and TMS type 3) was low, preoperative assessment is essential in reducing surgical complications. CBCT is beneficial in evaluating these variations due to its low radiation dose.