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Histology of oral mucous
membrane including gingiva
INDIAN DENTAL ACADEMY
Leader in continuing Dental Education
www.indian...
ORAL MUCOSA
 The oral mucosa is specialized tissues
that line the oral cavity and surrounds
the teeth.
 Oral cavity exte...
STRUCTURES OF ORAL CAVITY
 Buccal cavity
 Lips
 Cheeks
 Hard palate
 Soft palate
 Tongue
 Lingual papillae
 Taste ...
ORAL CAVITY
 Vestibule - trough between the gingiva, lips, and
cheeks.
 Frenum - a narrow band of tissue that connects
t...
Vestibule
Buccal
Frenum
Labial
Frenum
www.indiandentalacademy.com
FUNCTIONS OF ORAL MUCOSA
 PROTECTION
 SECRETION
 SENSATION
www.indiandentalacademy.com
Variations of oral mucosa
 Masticatory mucosa
 Lining mucosa
 Specialized mucosa
www.indiandentalacademy.com
Organization of the oral mucous membrane
 Epithelium
 Lamina propria
 Submucosa
www.indiandentalacademy.com
Epithelium
 The oral epithelium is a stratified
squamous epithelium.
 Keratinized (masticatory mucosa)
 orthokeratinize...
Structure of epithelium
Keratinized
 Stratum basale
 Stratum spinosum
 Stratum
granulosum
 Stratum corneum
www.indiand...
parakeratinised epithelium -
 The keratinocytes
maintain their nuclei
 prickle cell layer
 basal layer
 rete pegs
 la...
….Non keratinized
 Stratum basale
 Stratum
intermedium
 Stratum
superficiale
www.indiandentalacademy.com
Non keratinocytes in lining
epithelium
 Melanocytes
 Langerhan’s cell
 Merckel’s cell
 Inflammatory cells(Lymphocytes)...
Basal lamina
 Lamina lucida
 Lamina densa
www.indiandentalacademy.com
Lamina propria
www.indiandentalacademy.com
Sub Mucosa
www.indiandentalacademy.com
TYPES OF ORAL MUCOSA
 Masticatory mucosa
 Lining mucosa
 Specialized mucosa
www.indiandentalacademy.com
MASTICATORY MUCOSA
 KERATINIZED
 usually light pink in color (can vary with
skin color)
 Epithilial layer has NO SUB MU...
 Areas of coverage.
 Covers the hard palate (anterior 2/3
of the palate).
 Dorsum (top) of the tongue.
 Gingiva.
www.i...
PalatePalate
Incisive papillaIncisive papilla
www.indiandentalacademy.com
www.indiandentalacademy.com
SPECIALIZED MUCOSA
 Maybe keratinized
 Papillae with taste buds
 Aresa of coverage
 dorsum of tongue
www.indiandentala...
LINING MUCOSA
 Very delicate, thin tissue that moves freely.
 NON KERATINIZED
 Areas of tissue coverage.
Inside the ch...
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Oral mucosa/ dental implant courses

The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit 
www.indiandentalacademy.com

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Oral mucosa/ dental implant courses

  1. 1. Histology of oral mucous membrane including gingiva INDIAN DENTAL ACADEMY Leader in continuing Dental Education www.indiandentalacademy.com
  2. 2. ORAL MUCOSA  The oral mucosa is specialized tissues that line the oral cavity and surrounds the teeth.  Oral cavity extends from skin-vermilion junction of lips to junction of hard and soft palate above and to line of circumvallate papillae below www.indiandentalacademy.com
  3. 3. STRUCTURES OF ORAL CAVITY  Buccal cavity  Lips  Cheeks  Hard palate  Soft palate  Tongue  Lingual papillae  Taste buds  Gingiva  Teeth www.indiandentalacademy.com
  4. 4. ORAL CAVITY  Vestibule - trough between the gingiva, lips, and cheeks.  Frenum - a narrow band of tissue that connects two structures.  Labial - located at midline between labial and alveolar mucosa.  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 www.indiandentalacademy.com
  5. 5. Vestibule Buccal Frenum Labial Frenum www.indiandentalacademy.com
  6. 6. FUNCTIONS OF ORAL MUCOSA  PROTECTION  SECRETION  SENSATION www.indiandentalacademy.com
  7. 7. Variations of oral mucosa  Masticatory mucosa  Lining mucosa  Specialized mucosa www.indiandentalacademy.com
  8. 8. Organization of the oral mucous membrane  Epithelium  Lamina propria  Submucosa www.indiandentalacademy.com
  9. 9. Epithelium  The oral epithelium is a stratified squamous epithelium.  Keratinized (masticatory mucosa)  orthokeratinized  para keratinized  Non keratinized (lining mucosa) www.indiandentalacademy.com
  10. 10. Structure of epithelium Keratinized  Stratum basale  Stratum spinosum  Stratum granulosum  Stratum corneum www.indiandentalacademy.com
  11. 11. parakeratinised epithelium -  The keratinocytes maintain their nuclei  prickle cell layer  basal layer  rete pegs  lamina propria (underlying connective tissue) www.indiandentalacademy.com
  12. 12. ….Non keratinized  Stratum basale  Stratum intermedium  Stratum superficiale www.indiandentalacademy.com
  13. 13. Non keratinocytes in lining epithelium  Melanocytes  Langerhan’s cell  Merckel’s cell  Inflammatory cells(Lymphocytes) www.indiandentalacademy.com
  14. 14. Basal lamina  Lamina lucida  Lamina densa www.indiandentalacademy.com
  15. 15. Lamina propria www.indiandentalacademy.com
  16. 16. Sub Mucosa www.indiandentalacademy.com
  17. 17. TYPES OF ORAL MUCOSA  Masticatory mucosa  Lining mucosa  Specialized mucosa www.indiandentalacademy.com
  18. 18. MASTICATORY MUCOSA  KERATINIZED  usually light pink in color (can vary with skin color)  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 move. www.indiandentalacademy.com
  19. 19.  Areas of coverage.  Covers the hard palate (anterior 2/3 of the palate).  Dorsum (top) of the tongue.  Gingiva. www.indiandentalacademy.com
  20. 20. PalatePalate Incisive papillaIncisive papilla www.indiandentalacademy.com
  21. 21. www.indiandentalacademy.com
  22. 22. SPECIALIZED MUCOSA  Maybe keratinized  Papillae with taste buds  Aresa of coverage  dorsum of tongue www.indiandentalacademy.com
  23. 23. LINING MUCOSA  Very delicate, thin tissue that moves freely.  NON KERATINIZED  Areas of tissue coverage. Inside the cheeks. Vestibule - trough between the gingiva, lips, and cheeks. Lips. Ventral (underside) surface of the tongue. Soft palate (posterior 1/3 of the palate). www.indiandentalacademy.com

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