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  • 1. The oral cavityand its associated structure
  • 2. The External Mouth
    Composes primarily of the upper and lower lip
    Separated to the skin by vermillion border
    Superiorly – Philtrum
    Supero-laterally-Naso-labial fold
    Mento-labial fold
  • 3. Parts of the External mouth
    Naso-labial fold
    Upper lip
    Angle of the mouth
    Oral fissure
    Vermillion border
    Mento-labial fold
    Lower lip
  • 4. Muscle that supports the external mouth is the OrbicularisOris Muscle
  • 5. Functions of mouth
    The first part of digestive system wherein mastication occur.
    It receives food (ingestion) and break up the food into smaller pieces (digestion).
    Takes part in respiration as well as in speech production
    Lastly it conveys emotion
  • 6. The Internal Mouth
    The 2 divisions of the oral cavity
    Oral vestibule
    Oral cavity proper
  • 7. The Oral vestibule
    A slit like space bounded
    Laterally by cheek and lips
    Medially by the buccal and labial surfaces of the upper and lower teeth
    Posteriorly by the Retromolar area
  • 8. Parts
    A- attached gingiva
    B- Free gingiva
    C- Upper labial frenum
    D- Mucobuccal fold
    E- Interdental Papilla
    F- Cheek
    G- Oral vestibula
    I- Mucolabial fold
  • 9. Oral vestibule
    Oral vestibule- Left side
    Oral vestibule- right side
  • 10. Part
    Upper buccalfrenum
    Lower buccalfrenum
  • 11. The oral cavity proper
    Laterally by palatal and lingual surfaces of the upper and lower teeth
    Superiorlyby the palate
    (hard & soft)
    Inferiorlyby the tongue and or the floor of the mouth
    Posteriorly by the isthmus of fauces
  • 12. Part of the Oral cavity proper
    Hard Palate
    Palatoglossal arch
    Palatine tonsil
  • 13. Superior boundary
    Incisisve papilla
    Palate- Parts
    Palatine Rugae
    Median palatine raphe
    Maxillary tuberosity
    Fovea Palatina
  • 14. Bony framework of the hard palate
    Palatine process of the maxilla
    Horizontal plate of the palatine bone
  • 15. Inferior boundary
    The Floor of the mouth
    Ventral surface of the tongue
    Lingual Frenulum
    Sublingual fold
    Sublingual caruncle
  • 16. The tongue
    Composes of
    Anterior 2/3 (body)and Posterior 1/3 (root)
    Presence of lingual papillae that contains taste buds
    Filiform papilla
    Fungiform papilla
    Foliate papilla
    Circumvallate papilla
  • 17. Nerve Innervations
    Anterior 2/3 of the tongue
    Posterior 1/3 of the tongue
    Taste sensation
    Chorda tympani of the VII CN or facial nerve
    General Sensation
    Lingual Nerve of the mandibular division of V CN or Trigeminal Nerve
    Taste and general sensation is by
    IX CN or glossopharyngeal Nerve and
    X CN or Vagus nerve via internal laryngeal Nerve
  • 18.
  • 19. Muscles of the tongue
    Both is innervated by the XII CN or Hypoglossal nerve
    Extrinsic muscles
    1. Genioglossu
    2. Hyoglossus
    3. Stlyoglossus
    4. Palatoglossus
    Its action is to change the size or mass of the tongue
    Intrinsic muscles
    1. Superior longitudinal M
    2. Inferior longitudinal
    3.Transversus M
    4. Vertical M
    Its action is to change the shape or form of the tongue
  • 20. The muscles of the tongue
  • 21. Posterior boundary
    Palatopharyngeal arch
    Isthmus of fauces- parts
    Isthmus of fauces
  • 22. The Salivary Glands
    2. Submaxillary or submandibula gland-
    Located at the floor of the mouth posteriorly occupying the digastric triangle
    Whartons’ duct opens at the sublingual caruncle
    3. Sublingual gland
    Located at the floor of the mouth anteriorly
    Bartolins and Ravinis are the duct of SL gland opens at the sublingual fold
    1. Parotid Gland- the largest of the 3 salivary gland
    Located anterior to the ear, extending from the cheek bone up to the lower jaw
    Parotid or Stensens’ duct opens at the oral vestibule opposite upper second molar
  • 23. The Salivary glands
    Sublingual gland
    Submaxillary gland
  • 24. The Permanent Teeth
  • 25. Anterior teeth
    Central Incisor
    Lateral Incisor
  • 26. Posterior teeth
    2nd molar
    1st molar
    2nd premolar
    1st premolar
  • 27. Upper permanent teeth
    Central incisor
    Lateral incisor
    1st premolar
    2nd premolar
    1st molar
    2nd molar
  • 28. The Deciduous Teeth
  • 29. Anterior teeth
    Central incisor
    Lateral incisor
  • 30. Posterior teeth
    2nd molar
    1st molar
  • 31. Smile
    Everybody will smile at you
  • 32. When SAD
    Everybody like care for you
  • 33. The End- Thank you