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Overview of the Dentitions

Overview of the Dentitions. Chapter 15. Crown and Root. Crown Anatomical Clinical Root Single Bifurcated Trifurcated. Root(s). Brand and Isselhard. Anatomy of Orofacial Structures . Mosby, 1998, p. 245, 248. Single . Bifurcated. Trifurcated. Tooth Tissues. Enamel Dentin Cementum

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Overview of the Dentitions

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  1. Overview of the Dentitions Chapter 15

  2. Crown and Root • Crown • Anatomical • Clinical • Root • Single • Bifurcated • Trifurcated

  3. Root(s) Brand and Isselhard. Anatomy of Orofacial Structures. Mosby, 1998, p. 245, 248. Single Bifurcated Trifurcated

  4. Tooth Tissues • Enamel • Dentin • Cementum • Pulp Brand and Isselhard. Anatomy of Orofacial Structures. Mosby, 1998, p. 247

  5. Brand and Isselhard. Anatomy of Orofacial Structures. Mosby, 1998, p. 247

  6. Enamel • Outer layer • Hardest tissue in the body • Mostly inorganic (96%), little organic (4%)

  7. Dentin • Main portion • Can add to itself • Secondary dentin: formed in the pulp chamber after the tooth erupts • Reparative dentin localized formation due to occlusal trauma or caries

  8. Cementum • Bonelike structure that covers the root • Cementoblasts • Cellular and acellular • 50% inorganic, 50% organic

  9. Pulp • Nourishing, sensory, and dentin-reparitive system of the tooth • Composition: blood vessels, lymph vessels, connective tissues, nerve tissue, and odontoblasts • Pulp chamber (including pulp horns) and pulp canals

  10. Surfaces of Teeth • Mesial • Distal • Buccal/facial • Lingual/palatal • Occlusal/incisal Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 255.

  11. Division of Surfaces • Mesial, middle, and distal third • Facial/buccal, middle, and lingual third • Incisal/occlusal, middle, and cervical third Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 256.

  12. Division of Surfaces

  13. Line Angles • Formed by the junction of two surfaces • Drop “al” and add “o”, except when followed by an “o”. • Hyphenate preceding an “occlusal” Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 257.

  14. Point Angles • Point at which three surfaces meet. • Drop “al” and add “o”, except when followed by an “o”. • Some hyphenate preceding an “occlusal”

  15. Point Angles • Point at which three surfaces meet. • Drop “al” and add “o”, except when followed by an “o”. • Some hyphenate preceding an “occlusal”

  16. Landmarks • Lobe: Growth center • Developmental grooves: separate primary parts of the crown or root • Fossa: depressionor concavity • Cingulum: 4th growth center or lobe on the lingual surface • Ridge: Linear, elevated portion of a tooth • Marginal ridges: rounded bordersof enamel • Concavity: cavelike • Convex: bulging out

  17. Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 259. Lobes Structures. 6th Ed. 1998, p. 340

  18. Developmental Groove, Triangular Ridge, Fossa, and Pit Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 261.

  19. Ridges, Fossa, and Tubercles Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 260. Max. R Central (lingual view) Distal marginal ridge Mesial marginal ridge Incisal marginal ridge

  20. Ridges and Fossa Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 260. Max. R Central (lingual view) Incisal marginal ridge

  21. Cingulum: 4th Growth center or lobe Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 261. • Three facial lobes • One lingual lobe

  22. Transverse Ridge Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 261. • Union of two ridges • Formed by the ridges of the buccal and lingual cusps

  23. Convex and Concave Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 252, 263. Convex Concave Convex Concave

  24. Arrangement of Teeth • Dentition • Primary • Secondary • Arches • Maxillary • Mandibular • Quadrants • Max. R 1 • Max. L 2 • Mand. L 3 • Mand. R 4 • Dentition • Primary • Secondary • Arches • Maxillary • Mandibular • Quadrants • Max. R 1 • Max. L 2 • Mand. L 3 • Mand. R 4

  25. Dentition • Primary Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 278.

  26. Dentition • Secondary Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 277.

  27. Arches • Maxillary • Mandibular

  28. Midline (Midsagittal plane)

  29. Quadrants • Max. R 1 • Max. L 2 • Mand. L 3 • Mand. R 4

  30. Succedaneous and Non-succedaneous • Succedaneous: Permanent teeth that replace or suceed the deciduous teeth (ex.: # 4) • Non-succedaneous: Permanent teeth that do not replace deciduous teeth (ex.: #3) 4 3 A C Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 293.

  31. Succedaneous and Non-succedaneous Is # 5 succedaneous or nonsuccedaneous? 3 A C Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 293.

  32. Succedaneous and Non-succedaneous # 5 is succedaneous. 5 3 A C Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 293.

  33. Succedaneous and Non-succedaneous Is # 30 succedaneous or non-succedaneous? 30 Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 293.

  34. Succedaneous and Non-succedaneous # 30 is non-succedaneous. 30 Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 293.

  35. Mixed Dentition One or more primary teeth present Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 293.

  36. Naming Teeth • Universal (A-T, 1-32) • Palmer (Right angles and 1-8) • FDI (ISO) System (Quadrants 1-4, Numbers1-8)

  37. Universal Letters: A-T Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 281.

  38. Universal #s: 1-32 Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 280.

  39. Palmer System Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 279.

  40. Palmer System Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 293.

  41. Palmer System What does this equate to in the Universal System? 3

  42. Palmer System Answer: # 6 3 1 2 3 4 5 6 7 8 Universal System

  43. Palmer System What does this equate to in the Universal System? 5

  44. Palmer System Answer: # 20 5 24 23 22 21 20 19 18 17 Universal System

  45. Federation Dentaire Internationale System (FDI) Secondary Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 283.

  46. Federation Dentaire Internationale System (FDI) Primary teeth Brand and Isselhard. Anatomy of Orofacial Structures. 6th Ed. , Mosby, 1998, p. 284.

  47. Federation Dentaire Internationale System (FDI) What is the equivalent of 46 in the Universal System?

  48. Federation Dentaire Internationale System (FDI) Answer: #30 46 30 Answer: #30

  49. Case Scenario • Your 17 year old male patient informs you that he is having his 8s taken out next week. What is he referring to in the Universal System?

  50. Case Scenario • 8s = #s: 1, 16, 17, and 32 (Wisdom teeth)

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