DEH 213 - Oral Biology (Practical)

Credit Hours: 2
Topics covered in the didactic portion of the course include: Topographic description of the mouth, lips and tongue and their specialized mucosal covering. Classification and number of salivary glands. Saliva composition and function. Classification of oral mucosa and histological structures of buccal mucosa. During the practical portion of the course, students will microscopically observe: dental tissues and their investing and surrounding structures including the periodontal ligaments; the different types of salivary glands (sub-lingual, submandibular and parotid glands).

DEH 213 Practical Outline:
Week 1: Overview of course content, methodology, evaluation system and reference books
Week 2: Terminology in oral biology and the oral cavity, The Anatomy Of The Oral Cavity, Anatomy of the tooth. (Ten Cate's‏, Chapter 1)
Week 3: Oral histology, Enamel; composition, characteristics, histological structure, and incremental lines, Dentin; composition, characteristics, histological structure, types and icremental lines. (Ten Cate's, Chapter 7)
Week 4: Cementum; definition, development, composition, types, histological structure, function and age changes. Pulp; definition, development, morphology, structure, composition, function and age changes. (Ten Cate's‏, Chapter 8)
Week 5: The periodontium; periodontal ligament definition, development and its function, periodontal ligament cells, and fiber groups. alveolar bone definition, cells, and structure. (Ten Cate's‏, Chapter 9 & 6)
Week 6: The gingival unit, functions and types of mucosa, unattached gingival, attached gingival, alveolar mucosa. Structure of the Oral Mucosa, Histology of the Palate, Histology of the tongue. (Ten Cate's, Chapter 12)
Week 7: The salivary glands and saliva; function, composition, histology. (Ten Cate's, Chapter 11)
Week 8: Oral embryology, definition, prenatal phases, embryonic phase, fetal phase, primary embryonic layers, early development and formation of the three germ layers. (Ten Cate's‏, Chapter 2)
Week 9: Development of the hard and soft palates, facial development, prenatal dental development.  (Ten Cate's, Chapter 3)
Week 10: Postnatal facial development, development of the maxilla, postnatal maxillary growth, development of the mandible, postnatal mandibular growth. (Ten Cate's‏, Chapter 3)
Week 11: Tooth development; bud stage, cap stage, bell stage calcification and eruption. Formation of Permanent Dentition, Root Formation, Tooth eruption and Development of supporting structures. (Ten Cate's, Chapter 5)
Week 12: Revision

Course director: Dr. Ghada Hassan

References:

1. Essentials of oral histology and embryology: a clinical approach. James K. Avery‏, Daniel J. Chiego. ‏ 4th Edition, 2013 (ISBN: 978-0323082563).
2. Ten Cate's Oral Histology: Development, Structure, and Function. Antonio Nanci. 8th Edition, 2012 (ISBN: 9788535268423).
3. Essentials Of Oral Biology (Oral Anatomy, Histology Physiology & Embryology). Maji Jose. 2008.