DENTAL ANATOMY EXAM REVIEW . EXPLAINED QUESTIONS AND ANSWERS.

DENTAL ANATOMY EXAM REVIEW . EXPLAINED QUESTIONS AND ANSWERS. Chapter 4 What is the arrangement of teeth referred to as and name 2 types of dentition and the number of teeth in each Dentition Correct Answer: Primary dentition- 20 teeth. Permanent dentition- 32 teeth. Name the different arches. How many teeth are present in a primary arch and how many in a secondary mandibular arch? Correct Answer: Maxillary and mandibular. 10 each in deciduous, 16 teeth in perm. How many quadrants are there and list them. Correct Answer: 4- UR, UL, LL, LR What are succedaneous teeth? Correct Answer: The permanent teeth that replace or succeed the deciduous teeth Are any primary teeth succedaneous? If not, why not? Correct Answer: No because they don’t replace any teeth. Name all the nonsuccedaneous permanent teeth. Correct Answer: All U/L 1st, 2nd, 3rd molars Are secondary molars nonsuccedaneous? Correct Answer: Yes A dentition composed of both primary and secondary teeth is called a dentition. Correct Answer: Mixed dentition What is the order of identifying a specific tooth? Correct Answer: [dentition], [arch], [quadrant], [tooth]. Permanent, mandibular, right, central incisor How many dentitions are there? Correct Answer: 3. Primary, secondary, Mixed. What is the universal system? Correct Answer: The Universal system uses the Arabic numerals 1 through 32 for permanent teeth and the letters A through T for the primary teeth. Identify the following in the Universal System: Numbers 3,5,19,28, 32. Letters A, E, J, M, S Give the correct Universal system symbol for the following: Primary maxillary left central- F Primary mandibular right first molar- S Primary maxillary right canine- C Permanent maxillary right second molar- 4 Permanent mandibular right central incisor- 25 Identify the following by dentition, arch, and quadrant: 8 E 1 6 What is the palmer notation system? the quadrants are determined by the intersection of a vertical and a horizontal line *Look at power point slide 16-19 What is the Federation Dentaire Internationale System (FDI)? Each tooth, deciduous or permanent, is given a two-digit number. No duplicate numbers or letters are used. The first digit indicates the quadrant whether the tooth is permanent or deciduous. Give the Palmer, Universal, and FDI symbols for the permanent mandibular right first molar. Chapter 5 Which week of fetal life are tooth buds (tooth germs) begin to grow and where? Correct Answer: 6th week and they begin to grow within the alveolar process of the fetus What are tooth germs? Correct Answer: Tooth germs are small clumps of cells that have the ability to form the tooth tissues (enamel, dentin, pulp, cementum) Both primary and secondary teeth develop from these tooth germs, which are later located within the cavities of the alveolar process of the fetus What type of dentin is formed at this early stage? Primary dentin, and it occurs before root completion What is secondary dentin? Correct Answer: It is continually formed within the tooth by the same odontoblasts that form regular dentin and continues throughout ones lifetime. Which hard tissue of the tooth forms last? Correct Answer: Cementum What is calcification? Correct Answer: Hardening of tooth tissues by the deposition of mineral salts within these tissues. Soon after birth the permanent teeth begin to calcify and continue until about age twenty-five, when the roots of the third molars become calcified. The last area of the tooth to become calcified is the apex of the root. What are developmental lobes?