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