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| A) | Bone is harder than enamel. | ||
| B) | It has an extensive collagen network. | ||
| C) | It is not considered a brittle substance. | ||
| D) | It is composed of 96% mineral deposits. |
| A) | Erosion | ||
| B) | Attrition | ||
| C) | Abrasion | ||
| D) | Abfraction |
| A) | more type I collagen. | ||
| B) | a lower water content. | ||
| C) | a higher mineral content. | ||
| D) | less of an organic matrix. |
| A) | The tongue | ||
| B) | The cementum | ||
| C) | The periodontal ligament | ||
| D) | The free (marginal) gingiva |
| A) | not keratinized. | ||
| B) | keratinized on the exterior surface only. | ||
| C) | keratinized on the sulcular epithelium only. | ||
| D) | keratinized on both the exterior surface and the sulcular epithelium. |
| A) | lacks stippling. | ||
| B) | has an extensive network of elastic fibers. | ||
| C) | is loosely attached to the underlying alveolar bone. | ||
| D) | is designed for minimal movement and protection of the periodontium. |
| A) | It covers the entire root. | ||
| B) | It is not formed throughout life. | ||
| C) | It does not have blood vessels or nerves. | ||
| D) | Cellular cementum occurs in the apical one-third of the root. |
| A) | cannot be seen on radiographs. | ||
| B) | has a width in excess of 2 mm. | ||
| C) | has no diversity in the location of its fibers. | ||
| D) | has type I collagen as its principal constituent. |
| A) | The lamina dura | ||
| B) | Compact (cortical) bone | ||
| C) | Spongy (cancellous) bone | ||
| D) | All of the above |
| A) | The cementum | ||
| B) | The periodontal ligament | ||
| C) | The alveolar bone proper | ||
| D) | The pulp chamber and root canal |
| A) | A dense network of collagen fibers | ||
| B) | Keratinization of the mucosal surface | ||
| C) | An extensive network of elastic fibers | ||
| D) | A strong union between the mucosa proper and the lamina propria |
| A) | The hard palate | ||
| B) | The buccal mucosa | ||
| C) | The alveolar mucosa | ||
| D) | The floor of the mouth |
| A) | The labial mucosa | ||
| B) | The buccal mucosa | ||
| C) | The attached gingiva | ||
| D) | The ventral surface of the tongue |
| A) | is a masticatory mucosa. | ||
| B) | does not include any papillae. | ||
| C) | is primarily smooth, with no projections. | ||
| D) | All of the above |
| A) | have taste buds. | ||
| B) | occur on the posterior and lateral surface of the tongue. | ||
| C) | are the least abundant papillae on the dorsum of the tongue. | ||
| D) | are affected by benign migratory glossitis (geographic tongue). |
| A) | is not keratinized. | ||
| B) | has a high concentration of mucous glands. | ||
| C) | has a well-developed network of capillary loops. | ||
| D) | has a loose attachment to the underlying musculature. |
| A) | is composed of 99.5% water. | ||
| B) | serves as a lubricant for the oral mucosa. | ||
| C) | contains antibacterial substances such as lysozyme and immunoglobulin A. | ||
| D) | All of the above |
| A) | The parotid gland is a mixed gland. | ||
| B) | The sublingual gland is associated with Stensen duct. | ||
| C) | The minor salivary glands produce predominantly serous secretions. | ||
| D) | The submandibular gland produces about 70% of the total salivary volume. |
| A) | Parotid | ||
| B) | Sublingual | ||
| C) | Submandibular | ||
| D) | Minor salivary glands |
| A) | The parotid gland | ||
| B) | The sublingual gland | ||
| C) | The submandibular gland | ||
| D) | The minor salivary glands |