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بسم الله الرحمن الرحيم

بسم الله الرحمن الرحيم. HUMAN DENTITION DENTAL ANATOMY. INTRODUCTION Dental Anatomy Includes : 1- The Surface Form Of The Oral Cavity. 2- The External Morphology And Internal Composition Of The Individual Teeth. 3- The Relationship Of The Teeth To Each Other And To The Skull Bone.

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بسم الله الرحمن الرحيم

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  1. بسم الله الرحمن الرحيم

  2. HUMAN DENTITION DENTAL ANATOMY

  3. INTRODUCTION Dental Anatomy Includes: 1- The Surface Form Of The Oral Cavity. 2- The External Morphology And Internal Composition Of The Individual Teeth. 3- The Relationship Of The Teeth To Each Other And To The Skull Bone.

  4. 1- THE SURFACE FORM OF THE ORAL CAVITY. LIP GINGIVA NOTE: TAP CLICK TEETH PALATE ROOF OF THE MOUTH CHEEK FLOOR OF THE MOUTH TONGUE PALATINE TONSILS UVULA LABIAL FRENUM GINGIVA

  5. 1- THE SURFACE FORM OF THE ORAL CAVITY. Upon looking to the oral cavity you can see: 1-Lips 2-Teeth 3-Gingiva 4-Cheek 5-Tongue 6-Floor of the mouth 7-Roof of the mouth

  6. 1- Lips -There Are Two Lips Upper Lip And Lower Lip. -The CornerOf The Mouth Where They Meet Is Called Commissure. -Two Grooves Are Distinguished Around Lips. Nasolabialgroove which run diagonally downward on each side of the nostril toward the corner of the lip, and labiomental groove which run horizontally under the lower lip and emphasize the chin.

  7. Nasolabial groove Commissure. Nasolabial groove Upper lip Commissure. Lower lip Labiomental groove

  8. 2- Teeth -Teeth Are Arranged In The Oral Cavity In Two Arches Called The Dental Arches One Lower And One Upper. -The Upper Arch Is Called The Maxilla The Teeth In This Arch Are Called Upper Or Maxillary Teeth. -The Lower Arch Is Called The MandibleThe Teeth In This Arch Are Called Lower Or Mandibular Teeth. -Each Dental Arch Has A Midline That Divides The Arch Into Two Approximately Equal Right And Left Segments Named As Quadrant. -There Are Four Quadrants In The Entire Oral Cavity.

  9. In The Oral Cavity ThereAreFour ClassesOf Teeth That Includes: 1-Incisors: - There is two incisors The central incisor and The lateral incisor. 2-Canines: -There is one canine in each quadrant. 3-Premolars: -There are two in each quadrant. First and second premolars. 4-Molars: -There are three in each quadrant. They are the first molar, the second molar and the third molar. -The incisors and canines are considered anterior teeth since they are closer to the midline. - Molars and premolars are considered posterior teethsince they are farther from the midline. 1 2 3 4

  10. Upper lip Lower lip FRONT VIEW LOWER OR MANDIBULAR TEETH UPPER OR MAXILLARY TEETH UPPER DENTAL ARCH. (MAXILLARY T.) LOWER DENTAL ARCH ( MANDIBULAR T. )

  11. 3- Gingiva - It is that part of the masticatory tissue that surrounds the cervical part of teeth. - It is firmly attached to the teeth and their surrounding bone.

  12. 4- Cheeks - The lining of the inside of the cheeks is shiny with a white line called linea alba buccalis running posteriorly on each side at the level where the upper and lower teeth come together. - The parotid papilla: It is a round elevation of tissue between first and second molars at a just above the occlusal plane. This papilla cover the duct openings (Stensen’s ducts) on either side of the parotid glands. Upper Teeth Lower Teeth

  13. 5- Tongue • - The tongue is a broad flat organ composed of muscles and glands. • - It rests in the floor of the mouth. • - It is the principle organ of taste and is most important in speech and invaluable during mastication and deglutition (swallowing). • - The dorsum(topside) of the tongue is grayish red and is rough. It is covered by different kinds of papillae. • The smoother posterior third of the dorsum contains numerous mucous glands and lymph follicle referred to as the lingual tonsil. • - The ventral (undersurface) of the tongue is shiny and blood vesselsare visible beneath the fine mucous membrane.

  14. 6- Floor of the mouth • It is shiny and • some large blood vessels may be seen near the surface. • Beneath the tongue there are two bilateral bulges caused by the presence of large salivary glands. • - A valley shaped space between tongue and teeth is named as alveolingual sulcus. TONGUE

  15. VENTRAL SURFACE OF THE TONGUE AND THE FLOOR OF THE MOUTH

  16. 7- Roof of the mouth • - Its anterior part is named as hard palate. • Itsposterior part is named as soft palate which ends by a small fleshy structure named uvulahanging from its center. • The junctionbetween hard and soft palate is called vibrating line • - The soft palate is sometimes redder than the hard palate. HARD PALATE HARD PALATE vibrating line SOFT PALATE UVULA

  17. The end of the hard palate is opposite the third molars where the soft palate begins. • There is fat or salivary gland tissue beneath the surface tissue of the hard palate. HAED PALATE SOFT PALATE

  18. MORE ABOUT THE ROOF OF THE MOUTH. Uvula CORONAL SECTION OF THE PALATE

  19. MORE ABOUTTHE SURFACE FORM OF THE ORAL CAVITY. LIP GINGIVA NOTE: TAP CLICK TEETH PALATE ROOF OF THE MOUTH CHEEK FLOOR OF THE MOUTH TONGUE PALATINE TONSILS UVULA LABIAL FRENUM GINGIVA

  20. MORE ABOUTTHE SURFACE FORM OF THE ORAL CAVITY. UVULA TONGUE PALATE SALIVARY GLANDS CHEEK PALATINE TONSILES A- B- C- D- E- F-

  21. THANK YOUANDGOOD LUCK

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