Abstract
Consecutive sections of normal and inflamed dog gingivae were stained for elastic and oxytalan fibres using Victoria blue and aldehyde fuchisin with and without prior oxidation in potassium monopersulphate. Elastic fibres were present beneath the oral epithelium but absent beneath the junctional epithelium. Fibres stainable after oxidation were related particularly to the basement membrane regions of the oral and junctional epithelia and small blood vessels and persisted in inflammatory lesions. It is suggested that there is a different distribution of elastic and oxytalan fibres in free gingivae and that the latter may help stabilise blood vessels and the epithelial attachment under functional pressures.
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