21878481
Description
Flashcards by Evian Chai, updated more than 1 year ago
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Created by Evian Chai
over 4 years ago
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| Question | Answer |
| The periodontium contains | 1. Gingiva 2. PDL 3. Cementum 4. Alveolar bone |
| Label | |
| The peri-implant structure does NOT contain (2) | PDL Cementum |
| What are the three parts of gingiva divided by position? | 1. Attached gingiva 2. Free gingiva 3. Crevicular/junctional areas |
| What are the two types of gingiva divided by structures? | 1. Epithelial elements 2. Connective tissue elements |
| What is the crevice and junctional epithelium? | |
| What is the difference between attached and free gingiva? | Attached is lower, stippled, and is firmly bound to bone Free is right under teeth and slightly loose/smooth |
| In narrow teeth, what shape is the papilla? | Pyramidal |
| In wider teeth (posterior), what shape is the papilla? | Tent like |
| What are the four layers of the gingival epithelium? | 1. Stratum basale (bottom) 2. Stratum spinosum 3. Stratum granulosum 4. Stratum corneum |
| Gingival tissue is keratinized or nonkeratinized? | Keratinised Stratum corneum may be parakeratinised |
| What cells are in the gingival epithelium? | 1. Melanocytes 2. Langerhan's cells (present antigen) 3. Merkel cells (touch) 4. T cells |
| What is the difference between the epithelial cells in the crevicular and junctional epithelium? | Crevicular: Keratinised Junction: Nonkeratinised, basal cells only that have rapid turnover |
| How are the cervicular/junctional epithelium attached? | Hemidesmosomes attach them |
| How can toxins/bacteria enter the periodontium? | Through the junctional epithelium |
| What is present in gingival connective tissue? | 1. Glycoaminoglycans 2. Collagen (1 and 3) 3. Elastic fibres 4. Fibroblasts 5. Blood vessels 6. Lymph vessels 7. Nerves |
| In what orientations are the gingival connective tissue in healthy teeth? | 1. Horizontal 2. Vertical 3. Circular |
| What does tissue around the inner zone near implant resemble? | Scar tissue, with more collagen and less cells/vessels |
| Healthy teeth vs implants |
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