Oral-yeasts’ incidence of normal people and patients with oral carcinoma.

ABSTRACT

Using a swab technique, the oral cavities of 436 control volunteers (age between 6-70 years, 287 males, 149 females) and 228 oral-CA patients (age between 6-81 years, 167 males, 61 females) were sampled and cultured carriage was approximately 3 times greater in females than in males in age group 20-70 years. The yeast isolates were Candida albicans 68.12%, C. krusei 9.37%, C. parapsilosis 7.71%, C. tropicalis 7.23%, Trichosporon sp. 3.65%, Torulopsis sp. 2.88% and C.quilliermondii 1.04% respectively. The oral-Capatients sampled, 46.9% were positive for yeast or yeast-like fungi. The species of yeasts and percentage found were not much different from the normal control, there were C. albicans 68.05%, C. parapsilosis 10.1%, C. stellatoidea 5.25%, C. tropicalis 4.95%, Torulopsis sp. 3.9%, C. krusei 2.9%, Candida spp. 2.9%, unidentify yeasts 1.3% and Rhodotorula sp. 0.65%. Difference could be seen in the carriage rate which was approximately 4 times greater in patients with oral-Ca than in normal volunteers.