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Histology of oral mucous
membrane including gingiva
INDIAN DENTAL ACADEMY
Leader in continuing Dental Education
The oral mucosa is specialized tissues
that line the oral cavity and surrounds
Oral cavity extends from skin-vermilion
junction of lips to junction of hard and
soft palate above and to line of
circumvallate papillae below
Vestibule - trough between the gingiva, lips, and
Frenum - a narrow band of tissue that connects
Labial - located at midline between labial and
Buccal - located at bicuspid/molar region
between cheeks and alveolar mucosa.
Lingual - located at midline between the ventral
surface of the tongue and the floor of the mouth
usually light pink in color (can vary with
Epithilial layer has NO SUB MUCOSA
Dense, tough protective outer layer of tissue.
Designed to withstand the vigorous activity of
chewing and swallowing.
Firmly attached to the bone and does not
Areas of coverage.
Covers the hard palate (anterior 2/3
of the palate).
Dorsum (top) of the tongue.
Papillae with taste buds
Aresa of coverage
dorsum of tongue
Very delicate, thin tissue that moves freely.
Areas of tissue coverage.
Inside the cheeks.
Vestibule - trough between the gingiva,
lips, and cheeks.
Ventral (underside) surface of the
Soft palate (posterior 1/3 of the palate).