“…This may be attributed to the small numbers. Previous studies demonstrated an increased prevalence of various oral symptoms in patients with IBD (Schiller et al, 1971;Valery, 1972;O'Loughlin and Perry, 1978;Basu and Asquith, 1980;Rooney, 1984;Sundh and Hulten, 1984;Frankel and Mostofi, 1985;Sundh and Emilson, 1989;Alstead et al, 1991;Chan et al, 1991;Weiss et al, 1991;Philpot et al, 1992;Seo et al, 1992;Storwick et al, 1994;Calobrisi et al, 1995;Lisciandrano et al, 1996). A direct correlation between disease activity and the prevalence of other oral lesions was found by most (Basu et al, 1975;Basu and Asquith, 1980;Halme et al, 1993;Veloso et al, 1996) but not all (Lisciandrano et al, 1996) previous studies, and was attributed to an altered immune response after an exacerbation of CD.…”