Dental Embryology, Histology & Anatomy Ch. 6 questions with correct answers

Odontogenesis CORRECT ANSWER the process of tooth development. When does Odontogenesis occur? CORRECT ANSWER Takes place in stages. It's a continuous process until completed. There is no clear-cut beginning and end. Dentition CORRECT ANSWER used to describe the natural teeth in the jaws How many dentitions are there in the mouth? CORRECT ANSWER There are two dentitions: Primary dentition and Permanent dentition. Primary dentition CORRECT ANSWER Develops during the prenatal period and consists of 20 teeth, which erupt and later shed. Permanent dentition CORRECT ANSWER Develop as the primary teeth shed and the jaws grow and mature; it consists of 32 teeth, gradually erupting and replacing the primary dentition. What is Stage 1 of Tooth Development? CORRECT ANSWER Initiation Stage Initiation Stage CORRECT ANSWER Occurs during 6th and 7th week of prenatal development. Involves the physiologic process of induction (active interaction between embryological tissue types). Extoderm lining stomodeum gives rise to oral epithelium and then dental lamina. Next to deeper extomesenchyme, which is influenced by NCCs. What are the histological features of the Initiation Stage? CORRECT ANSWER Ectoderm lining stomodeum gives rise to oral epithelium and then to dental lamina; adjacent to deeper ectomesenchyme, which is derived from the NCCs. Both tissue types are separated by a basement membrane. Oral Epithelium CORRECT ANSWER embryonic lining of o