Cleavage lines of the oral mucosa in Japanese cadavers

Cleavage lines were experimentally reproduced in the oral mucosa of Japanese cadavers. They were investigated macroscopically and histologically. The reproduced cleavage lines showed little directional variation by sex or age. From the histological findings, the mucosal cleavage lines were interpreted to represent cleavage split along the direction of connective tissue fibres in the lamina propria.