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doi:10.1111/j.1741-2358.2009.00319.x Exfoliative cytology of the oral mucosa in burning mouth syndrome: a cytomorphological and cytomorphometric analysis Objective: The aim of this study was to evaluate oral epithelial cells by exfoliative cytology in burning mouth syndrome (BMS). Material and methods: Oral smears were collected from clinically normal-appearing mucosa by liquid-based exfoliative cytology in 40 individuals (20 BMS patients and 20 healthy controls matched for age and gender) and analysed for cytological and cytomorphometric techniques. Results: Mean values of nuclear area (NA) for experimental and control groups were, respectively, 67.52 and 55.64 μm2 (p

The aim of this study was to evaluate oral epithelial cells by exfoliative cytology in burning mouth syndrome (BMS).Oral smears were collected from clinically normal-appearing mucosa by liquid-based exfoliative cytology in 40 individuals (20 BMS patients and 20 healthy controls matched for age and gender) and analysed for cytological and cytomorphometric techniques.Mean values of nuclear area (NA) for experimental and control groups were, respectively, 67.52 and 55.64 μm² (p0.05). Cytoplasmic area (CA) showed the following mean values: 1258.0 (experimental) and 2069.0 μm² (control). Nucleus-to-cytoplasm area ratio for the experimental group was 0.07, besides the control group was 0.03 (p0.05). Morphologically, oral smears exhibited normal epithelial cells in both experimental and control groups. There was a significant predominance of nucleated cells of the superficial layer in the smears of BMS patients (p = 0.00001).This study revealed that oral mucosa of BMS patients exhibited significant cytomorphometric changes in the oral epithelial cells. These changes probably are associated with epithelial atrophy and a deregulated maturation process that may contribute to the oral symptoms of pain and discomfort in BMS.