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DHE121 Lesson Objectives

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DHE121 Lesson Objectives Instructional Objectives for DHE121 Identify the following anatomical structures and terms: Parotid Papilla Canine Eminence Parotid Duct or Stenson’s Duct Primary Teeth Maxilla Permanent Teeth Mandible Anterior Teeth Maxillary Sinuses or Paranasal Sinuses Posterior Teeth Alveolar Process or Bone Incisors Maxillary or Mandibular Vestibule Canines Buccal, Labial, and Alveolar Mucosa Premolars Vestibular Fornix Molars Mucobuccal Fold Exostoses Labial Frenum Pulp Cavity Alveolus Torus or Tori Periodontal Ligament (PDL) Gingiva Crown of a Tooth Attached Gingiva Root of a Tooth Alveolar Mucosa Enamel Mucogingival Junction Dentin Marginal Gingiva Cementum Gingival Sulcu Maxillary or Mandibular Tuberosity Interdental Gingiva or Papilla Fordyce Spots Fauces Linea Alba Anterior and Posterior Tonsillar Pillar Retromolar Pad Palatine Tonsils Palate Hard and Soft Median Palatine Raphe Incisive Papilla Palatine Rugae Uvula of the Palate Pterygomandibular Fold or Raphe Base of the Tongue Body of the Tongue Apex of the Tongue Lingual Papillae Dorsal Surface of the Tongue Median Lingual Sulcus of the Tongue Filiform Lingual Papillae Fungiform Lingual Papillae Sulcus Terminalis of the Tongue Foramen Cecum Circumvallate Lingual Papillae Lingual Tonsil Lateral Surface of the Tongue Foliate Lingual Papillae Ventral Surface of the Tongue Plicae Fimbriata Lingual Frenum Sublingual Fold Sublingual Salivary Gland Sublingual Caruncle Submandibular Duct (Wharton’s Duct) Sublingual Duct (Bartholin’s Duct) Laryngopharynx Nasopharynx Oropharynx Facial or Labial Anterior Buccal Posterior Palatal Frenum Lingual Dorsal Vestibules Oral Mucosa or Mucous Membrane Mastication DHE121 ORAL CAVITY 1. Describe the boundaries of the oral cavity. 2. Cite the two parts of the oral cavity. 3. Define: vestibule oral cavity proper mucobuccal fold frenum alveolar mucosa gingiva exotoses palatine tori (torus palatinis) mandibular tori (torus mandibularis) 4. Describe and identify on an illustration the landmarks/structures for the following: lips cheeks and dental arches gingival area oral boundaries palate posterior of the oral cavity tongue floor of mouth DHE 121 GENERAL EMBRYOLOGY Define: Mesenchyme Mesoderm Ectoderm Endoderm Odontogenic 1. Describe the oral charcteristics of Down’s syndrome and explain the genetic defect. 2. Define genetic autosomal dominant inheritance and site two dental examples of such a defect. 3. Describe the origin of neural crest cells. 4. Define Treacher-Collins syndrome and site its origin. DHE 121 EMBRYOLOGY OF THE HEAD, FACE AND ORAL CAVITY 1. Describe the Bronchial (Pharyngeal) Arch System. 2. Define the following: Stomatodium Buccopharyngeal membrane 3. Briefly describe the anatomy of the bronchial arches. 4. Name the nerve which is derived from the following arches: first, second and third. 5. Site the following structures on a slide: Maxillary Process Mandibular Process Lateral Nasal Process Nasal Pit Medial Nasal Process Groove Separating the Maxillary process from the medial nasal and Lateral nasal process 6. Site the days in which the face develops. 7. Explain the formation and site on a slide of the primary palate. 8. Explain the formation and site on a slide of the secondary palate. 9. Site the weeks at which tongue begins to develop. 10. Site the Bronchial arches from which the tongue develops. 11. Explain the innervation of the tongue. 12. Discuss the origin of the mandible and maxillary (arch). 13. Name the Cartilage of the first arch. Describe how it looks in embryo. 14. Describe intramembranous ossification of the mandible. Site the week in which this takes place. 15. Define teratogens. 16. Site statistics in the U.S. for cleft lip or palate. 17. Site the etiologies of the following clefts, at which week in embryionic life will a cleft lip, and cleft palate form. DHE 121 STRUCTURE OF THE ORAL TISSUES 1. Explain the reason for the permanent dentition. 2. Define clinical crown. 3. Site the inorganic composition of enamel. 4. Describe enamel composition. 5. Explain why it is vulnerable to demineralization by acids. (enamel) 6. Describe the enamel forming cells length of vitality. 7. Describe the composition of dentin. 8. Define odontoblast. 9. Site where the odontoblastic cell body lies. 10. Describe the composition of the pulp. 11. Draw the foolowing structures: dentin, cementum, enamel, periodontal ligament, bone and cej. 12. List the supporting apparatus of the tooth. 13. Describe the pdl and its function. 14. List the components of the oral mucosa. Explain the parts of these tissues DHE 121 DEVELOPMENT OF THE TOOTH AND ITS SUPPORTING TISSUES 1. Define primary epithelial band. Discuss what it gives rise to. 2. Compare the vestibular lamina with the dental lamina. 3. Explain the bud stage. 4. Explain the cap stage. 5. Define dental organ. 6. Explain the responsibility of the dental organ in the fomation of the tooth. 7. List the components of the dental organ. Explain their significance in the formation of the crown. 8. Identify these structures from a slide. 9. Define histodifferentiation and morphodifferentiation. 10. Discuss the bell stage of development. 11. Define and be able to identify from a slide: stellate reticulum internal dental epithelium dental papilla external dental epithelium dental follicle cell-free zone stratum intermedium 12. Explain the dental papilla at the bell stage. 13. Explain the significance of the disjoining of the dental lamina. 14. Explain the nerve and vascular supply during early development. 15. Explain the formation of the permanent dentition. 16. Explain hard tissue formation in the late bell stage of development. 17. Determine which is first, enamel formation or dentin formation. 18. Briefly explain dentinogenesis and the significance. 19. Explain Hertwig’s epithelial root sheath. 20. Describe root formation. 21. Discuss tooth eruption. 22. Define and explain cementogenesis. 23. Identify from a slide the bell, cap and bud stage of development. 24. Identify from a slide the dental lamina and the oral epithelium. DHE121 DENTINOGENESIS 1. Define odontoblasts. 2. Explain the difference between the dental pulp and the dental papilla. 3. Explain dentin formation at the late bell stage of development. Evaluate this from a slide. 4. Explain the shape of the internal dental epithelium cells and how they change and differentiate. 5. Describe coronal dentin formation and be able to label the following structures associated with it. First formed dentin differentiating odontoblasts dental papilla internal dental epithelium cell-free zone stellate reticulum 6. Explain the organic matrix of dentin. 7. Define Mantle dentin. 8. Define Circumpulpal dentin. 9. Explain root dentin formation. 10. Explain the mineralization of dentin. 11. Explain secondary and tertiary dentinogenesis. 12. Given a slide be able to identify the structure in #5, 7, 8. DHE 121 PROPERTIES OF PULP AND DENTIN 1. Describe the physical properties of dentin. 2. Describe the anatomy of dentin. 3. Define primary dentin. 4. Define tertiary dentin. 5. Define tertiary dentin. 6. Define predentin. 7. Define and be able to indentify from a slide the following: dentinal tubules peritubular dentin intertubular dentin interglobular dentin incremental lines of von Ebner granular layer of Tomes 8. Describe the dentinoenamel junction. 9. List the four zones of the pulp and be able to identify and explain these zones from a slide. 10. Describe the cells of the dental pulp. 11. Briefly describe the nerve, vasculature and lymphatic supply of the pulp. 12. Describe dentin sensitivity and the three theories of sensitivity. 13. Define pulp stone. 14. Describe the age changes in the pulp. 15. Describe the clinical considerations of pulp and dentin. 16. Describe the ground substance of the pulp. 17. List the functions of the pulp. 18. Describe the clinical considerations of the pulp. DHE 121 AMELOGENESIS 1. Name the part of the embryonic tooth bud from which enamel is formed. 2. Describe the differentiation of ameloblasts in the dental organ. 3. Describe where amelogenises first takes place. 4. Describe the direction that the ameloblasts move. 5. Explain the cervical extent of enamel. 6. Describe at which stage of tooth development amelogenesis takes place. 7. Name the embryonic layer in which enamel originates. 8. Describe enamel formation and its stages. 9. Briefly describe the mineralization of enamel. 10. Describe enamel formation as seen through the light microscope. 11. Describe the Morphogenetic stages. 12. Define differentiation and describe the stages. 13. Describe the secretory stage of enamel. 14. Describe maturation of enamel. 15. Describe the protective stage of enamel. 16. List defects of amelogenesis. DHE 121 ENAMEL STRUCTURE 1. List the mineral content of enamel. Compare the mineral content of dentin and enamel. 2. Describe why enamel is susceptible to caries. Explain the tubule system in dentin. 3. Describe the physical characteristics of enamel and its structure. 4. Describe the enamel rod and its crystal orientation. 5. Describe the rod sheath and explain the sheath. 6. Explain Tomes processes. 7. Describe the direction of the enamel rods as they move toward the cusps. 8. Define Striae of Retzius. 9. Define bands of Hunter-Schreger 10. Define gnarled enamel. 11. Define enamel tufts and lamellae. 12. Describe the DEJ. 13. Define perikymata. 14. Describe the age changes in enamel. 15. Compare young enamel to older enamel. 16. Explain the clinical implications of the histology of the enamel, specifically fluoridation. 17. Summarize the
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