Introduction to dental morphology

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  • Misr international university...no i am still dental student in the second year!!
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  • From which University are you doing Oral Biology? Have done Bachelors in Dentistry or have a Basic Science background?
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  • You are welcome..... real thanks to Denta Anatomy by Wheelers..What a book!
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  • Excellent Dr sadat,I am mphil oral biology student and really like ur simple but thorough presentation on tooth morpho will help me deal new first year students in a better way.
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Introduction to dental morphology

  1. 1. Introduction to Dental Morphology Dr. Syed Sadatullah Assistant Professor College of Dentistry King Khalid University
  2. 2. Introduction to Dental Morphology What is ‘anatomy’? The science dealing with the structure of animals and plants. What is ‘morphology’? The branch of biology dealing with the form and structure of organisms/parts of body. Dr.Syed Sadatullah
  3. 3. <ul><li>Why study dental morphology? </li></ul><ul><li>It provides one of the basic components of skills needed to practice all apects of dentistry. Without the correct knowledge of tooth morphology it is impossible to accurately replace a tooth or part of a tooth in the oral cavity. </li></ul>Dr.Syed Sadatullah
  4. 4. <ul><li>What are teeth? </li></ul><ul><li>Teeth are hard mineralized appendages that are found in jaws. </li></ul>Dr.Syed Sadatullah
  5. 5. <ul><li>Functions of teeth </li></ul><ul><li>Mastication </li></ul><ul><li>Speech </li></ul>Dr.Syed Sadatullah
  6. 6. <ul><li>Aesthetics </li></ul><ul><li>Integrity of Alveolar bone </li></ul><ul><li>Integrity of dental arches </li></ul>Dr.Syed Sadatullah
  7. 7. <ul><li>Parts of tooth </li></ul><ul><ul><li>Crown and Root </li></ul></ul><ul><ul><li>clinical crown anatomical crown </li></ul></ul><ul><ul><li>Enamel, Dentine, Cementum </li></ul></ul><ul><ul><li>and Pulp </li></ul></ul>Dr.Syed Sadatullah
  8. 8. <ul><li>Division of teeth depending upon morphology (Hetrodont) </li></ul><ul><li>Incisors </li></ul><ul><li>Canines </li></ul><ul><li>Premolars </li></ul><ul><li>Molars </li></ul>Dr.Syed Sadatullah
  9. 9. <ul><li>Two sets of teeth (Diphyodont) </li></ul><ul><li>Primary teeth. Also called the deciduous teeth or the milk teeth. They are 20 in number. </li></ul><ul><li>Permanent teeth. They are 32 in number. </li></ul>Dr.Syed Sadatullah
  10. 10. <ul><li>Differences between primary and permanent teeth </li></ul>Primary teeth Permanent teeth <ul><li>20 </li></ul><ul><li>smaller </li></ul><ul><li>premolars not present </li></ul><ul><li>big pulp chambers & high pulp horns </li></ul><ul><li>dental arches smaller </li></ul><ul><li>root resorps teeth exfoliate </li></ul><ul><li>cervical ridges more prominent </li></ul><ul><li>roots narrower </li></ul><ul><li>molar roots flare more </li></ul><ul><li>enamel thin & more opaque </li></ul><ul><li>mamelons absent </li></ul><ul><li>32 </li></ul><ul><li>bigger </li></ul><ul><li>8 premolars present </li></ul><ul><li>small pulp chambers </li></ul><ul><li>dental arches bigger </li></ul><ul><li>healthy tooth doesn’t exfoliate </li></ul><ul><li>less prominent </li></ul><ul><li>roots broader </li></ul><ul><li>flare less </li></ul><ul><li>enamel thicker </li></ul><ul><li>mamelons may be present </li></ul>
  11. 11. <ul><li>Stages of human dention </li></ul><ul><li>Primary dentition or deciduous dentition (8 to 30 months) </li></ul><ul><li>Primary dentition begins with the eruption first primary tooth which is mandibular central incisor at the age of 8 months and ends with the eruption of primary maxillary second molar at age of 30 months </li></ul><ul><li>Mixed dentition (6 to 12 years) </li></ul><ul><li>Mixed dentition begins with the eruption of first permanent tooth which is lower first molar at the age of 6 years and ends with the eruption of permanent second molar at the age of 12 years </li></ul><ul><li>Permanent dentition (12 years onwards) </li></ul><ul><li>Permanent dentition stage starts when the last primary tooth exfoliates. </li></ul>Dr.Syed Sadatullah

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