Research Article
CBCT Assessment of Ethmoid Roof Variations through Keros, Gera, and TMS Classifications
Table 8
The incidence of gera types in different populations.
| Study | Country | Sample number | Modality | Gera type I (%) | Gera type II (%) | Gera type III (%) |
| Gera et al. [9] | Italy | 190 | CT | 32.6 | 62.7 | 4.7 | Abdullah et al. [11] | Malaysia | 150 | CT | 23.7 | 72.3 | 4 |
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