Preclinical Dental Hygiene Practice Quiz - Chapter 15 & 21 with Sample Questions

Practice Quiz - Chapter 08 1. ID: Ectoderm differentiates into A. hair. B. skin. C. lining of the oral cavity. Incorrect D. All of the options. Correct Awarded 0.0 points out of 1.0 possible points. 2. ID: The periodontal ligament is capable of A. repair. Correct B. remodeling. C. resorption. D. All of the options. Incorrect Awarded 0.0 points out of 1.0 possible points. 3. ID: The innermost area of the tooth is the A. anatomic crown. B. apical foramen. C. cementoenamel junction. D. pulp chamber. Correct Awarded 1.0 points out of 1.0 possible points. 4. ID: Dentin A. is capable of regeneration. B. forms the bulk of the tooth. C. is an excellent thermal conductor. Incorrect D. All of the options. Correct Awarded 0.0 points out of 1.0 possible points. 5. ID: The hardest calcified substance in the body is A. bone. B. cementum. C. dentin. D. enamel. Correct Awarded 1.0 points out of 1.0 possible points. ID: Enamel-producing cells are called A. ameloblasts. Correct B. ameloclasts. C. odontoblasts. Incorrect D. odontoclasts. Awarded 0.0 points out of 1.0 possible points. ID: The compact bone that lines the tooth socket is known as the A. alveolar crest. B. cortical plate. Correct C. lamina dura. D. trabeculae. Awarded 1.0 points out of 1.0 possible points. ID: The earliest signs of tooth development appear A. during the second trimester of pregnancy. Incorrect B. during the third month in utero. C. immediately following birth. D. during the first trimester of pregnancy. Correct Awarded 0.0 points out of 1.0 possible points. ID: The structure units of enamel are called enamel A. lamellae. B. prisms. Correct C. spindles. Incorrect D. tubules. Awarded 0.0 points out of 1.0 possible points. ID: 6. 7. 8. 9. 10. The primary purpose of , the fiber group of the periodontal ligament, is to aid in resisting tipping and twisting of the tooth. A. alveolar crest Incorrect B. horizontal C. interradicular Correct D. apical Awarded 0.0 points out of 1.0 possible points. ID: Embryology is the study of A. cell development. Incorrect B. structure and function at the microscopic level. C. prenatal development prior to birth. Correct D. postnatal development prior to age 1 year. Awarded 0.0 points out of 1.0 possible points. ID: Histology is the study of A. cell development. B. structure and function at the microscopic level. Correct C. prenatal development prior to birth. D. postnatal development prior to age 1 year. Awarded 1.0 points out of 1.0 possible points. ID: The face and its related tissues begin to form during the A. first week of prenatal development. B. first month of prenatal development. C. fourth month of prenatal development. Incorrect D. fourth week of prenatal development. Correct Awarded 0.0 points out of 1.0 possible points. ID: 11. 12. 13. 14. Down syndrome, fetal alcohol syndrome, and endogenous tetracycline stain of the teeth are all examples of a A. congenital malformation. B. developmental disturbance. Correct C. drug ingestion during the fetal period. D. All of the options. Incorrect Awarded 0.0 points out of 1.0 possible points. ID: Tooth enamel is formed in the A. ectodermal embryonic layer. B. mesodermal embryonic layer. Correct C. endodermal embryonic layer. Incorrect D. None of the options. Awarded 0.0 points out of 1.0 possible points. ID: The dentition of a 5-year-old child, ±9 months, would contain A. all primary teeth and first permanent molars erupting. B. all primary teeth with first permanent molars fully erupted. C. all primary teeth. Correct D. None of the options. Awarded 1.0 points out of 1.0 possible points. ID: The shedding of a primary tooth is called A. exfoliation. Correct B. odontogenesis. C. calcification. D. remodeling. Awarded 1.0 points out of 1.0 possible points. ID: The division of a tooth root into three roots is called A. bifurcation. B. trifurcation. Correct C. dentinogenesis imperfecta. D. exfoliation. Awarded 1.0 points out of 1.0 possible points. ID: An enamel rod is composed of A. calcified enamel prisms. Correct