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DHYG341-34
Dental Embryology Terminology
Question | Answer |
---|---|
Proliferative period | Growth period; (weeks 1-2) Fertilization Implantation Formation of the embryonic disk |
Embryonic period | Growth period; (weeks 2-8) Tissues develop Organ systems form Heart forms and begins to beat by the 4th week Face and oral structures develop during weeks 4-7 |
Fetal period | (weeks 8-birth)- Embryo takes on a more human appearance Tissues enlarge, differentiate, and become capable of function. |
Somites | Blocks of mesoderm that are located on either side of the neural tube in the developing vertebrate embryo. ... As the somite matures, the outer cells transform from mesenchymal to epithelial cells, creating a distinct boundary between individual somites. |
Eight functions of cell | Absorption, respiration, irritability, structure, transport, reproduce, excrete, growth |
Stomodeum | The embryo’s future oral cavity, an invagination lined by surface ectoderm. |
Intermaxillary segment | Bilateral medial nasal process |
Primary palate | That part of the palate formed from the median nasal process. The first palate to form is anterior to the secondary palate. |
Secondary palate | The palate proper formed by fusion of the lateral palatine process of the maxilla. |
Tuberculum impar | Central tissue of the tongue eventually overgrown by the two lateral tissue. |
Erosion | Loss of tooth structure from the action of acidic substances, like citric acid in lemons, stomach acids, and carbonated beverages. |
Abfraction | Cervical loss of enamel theoretically thought to be due to tooth bending of the tooth under heavy occlusal forces. . |
Attrition | The wearing away of tooth structure due to heavy occlusal contacts between maxillary and mandibular teeth. |
Abrasion | Wearing away of tooth due the action of abrasive substances (like toothpaste) |