omised are also at risk. The common cause of a fungal infection is Candida albicans which produces Thrush (Griffiths and Boyle, 1993). Candidiasis (Thrush) is a yeast like pathogenic fungus of which there is three main types, Perleche which appears as cuts on the lips and the corners of the mouth, Sub-acute thrush, this appears as loose flaky, cream coloured plaque and an inflamed red tongue and Chronic thrush identified by a swollen red tongue (Turner, 1996). Most fungal infections are treated with a topical medication such as Nystatin (Evans, 2001).
             Streptococcal infections are the predominate bacterial infections found in the oral cavity, gram negative organisms such as E. coli, Klebsiella, Pseudomonas and Proteus are the most common. Ulcers infected with E. coli, Klebsiella and Proteus is usually raised, yellow-white and moist whereas ulcers infected with Pseudomonas are ne
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