Country | Study | Sample size | Incidence of LN above the alveolar crest |
USA | Benninger et al., 2012 | 28 | 21% |
German | Holze and Wolff, 2001 | 68 | 8.8% |
Iran | Behnia, 2000 | 669 | 14.06% |
South Korea | Kim et al., 2004 | 32 | 0.0% |
Kenya | Present study | 30 | 0.0% |