| Year | Venue | Theme |
| 1971 | Göteborg | |
| 1972 | København | |
| 1973 | Aarhus | |
| 1974 | Oslo | |
| 1975 | Helsinki | |
| 1976 | Bergen | |
| 1977 | Stockholm | |
| 1978 | København | |
| 1979 | London (BSOP) | |
| 1980 | Malmö | |
| 1981 | Göteborg (IAOP) | |
| 1982 | Kuopio | |
| 1983 | Stockholm | Dysplasia |
| 1984 | Amsterdam (IAOP) | |
| 1985 | Turku | Non-odontogenic lesions of the jaw bones |
| 1986 | Edinburgh (IAOP) | |
| 1987 | København | |
| 1988 | Umeå | Peripheral odontogenic tumors |
| 1989 | Oslo | Viral infections |
| 1990 | Aarhus | Lymphomas |
| 1991 | Helsinki | |
| 1992 | Hamburg (IAOP) | |
| 1993 | Bergen | Salivary gland tumors |
| 1994 | York (IAOP) | |
| 1995 | Malmö | Verrucous carcinoma and related lesions |
| 1996 | Turku | Salivary gland tumors with fine needle aspiration biopsy |
| 1997 | Göteborg | Pseudosarcomatous lesions |
| 1998 | Stockholm | Oral manifestations of systemic disease |
| 1999 | København | Odontogenic lesions |
| 2000 | Oslo | Precancerous lesions |
| 2001 | Helsinki | Salivary gland lesions |
| 2002 | Umeå | Cysts and cystic tumors of the maxillofacial and oral regions |
| 2003 | Bergen | Fibro-osseous lesions |
| 2004 | Madrid (IAOP) | |
| 2005 | Oulu | Spindle-cell lesions |
| 2006 | Malmö | Clear-cell tumors |
| 2007 | Leiden | Oral cancer and precancer |
| 2008 | København | WHO cases of odontogenic tumors |
| 2009 | Stockholm | Vesiculobullous diseases |
| 2010 | Tromsø | Non-odontogenic mesenchymal lesions |
| 2011 | Turku | Lymphoid lesions |
| 2012 | Oslo | Salivary gland tumors |
| 2013 | Umeå | White lesions |
| 2014 | Istanbul (IAOP) | |
| 2015 | Malmö | Differential diagnostics |
| 2016 | Helsinki | Vascular malformations |
| 2017 | Cardiff (BSOMP) | |
| 2018 | Bergen | Inflammatory oral diseases |
| 2019 | København | Non-odontogenic bone tumors |
| 2020 | Canceled | Covid 19 |
| 2021 | On-line | Problem- and rare cases |
| 2022 | Kuopio | Syndromes |