Histology of Dentine PDF

Histology of Dentine Tutor: Lauren Stockham Module: Oral and Dental Sciences Year 1 Intended learning outcomes By the end of the session students should be able to: Describe the composition and structure of dentine Distinguish between the 3 types of dentine (primary, secondary and tertiary)...

Histology of Dentine Tutor: Lauren Stockham Module: Oral and Dental Sciences Year 1 Intended learning outcomes By the end of the session students should be able to: Describe the composition and structure of dentine Distinguish between the 3 types of dentine (primary, secondary and tertiary) Describe how the structure of dentine relates to its function Apply this knowledge to interpret the clinical significance of dentine in health and disease GDC Learning Outcomes: 1.1.5, 1.1.6 Histology of the tissues of the teeth and supporting structures Enamel Dentine Pulp Cementum Bone (alveolar) Periodontal ligament Gingiva Refresh prior knowledge… Enamel Dentine 1. Location of dentine Bulk of tooth Pulp 2. Dentinogenesis – how dentine is formed 3. Embryonic origin - ? Neural crest cells — Ectomesenchyme cells Refer back to lectures: - Oral embryology - Tooth morphology Identify the dentine in this cross-sectional diagram of a tooth  Why do you need to know about dentine? Identification of Dentine caries - Pathology and hypersensitivity Restorative and repair of bonding infected, Radiographs and dentine linked materials affected and management healthy dentine to pulp Understanding how it works and Identify what’s normal and what’s not normal why and treatment options This knowledge links to clinical assessment, diagnosis, management and advice. These are some examples, but not exhaustive. Key features: Dental Tubules Composition and Structure Composition of dentine Approximately: 70% inorganic minerals calcium hydroxyapatite (smaller than enamel) 20% organic material Majority collagenous rich matrix (18%) Minority non-collagenous matrix proteins and lipids (