Quiz # 3-dhy 114 Oral Anatomy

Chapter 6, page 64 and Figures 6-16 and 6-17 page 80 states," Amelogenesis imperfecta has a hereditary etiology and can affect all teeth of both dentitions'. Dentinogenesis imperfecta, which has a hereditary basis results in blue-grey or brown teeth with an opalescent sheen. The enamel portion is normal but chips off because of a lack of support by the abnormal dentin, leaving dentinal crowns."

Chapter 16 p. 252 in 2nd ed., p.203 3rd ed. and Table 6-3 states, The crown of a permanent incisor can be affected with dens in dente (discussed further in Chapter 6 2nd ed.,Table 6-3. D-3rd.edition. This pit may lead to pulpal exposure and pathology. Dens in dente may be hereditary and is more common with a maxillary lateral incisor".

Chapter 17, page 277 states," permanent premolars present difficulty in instrumentation of the root because they have proximal root concavities, especially on the mesial of the maxillary first premolar".

See Chapter 17 p. 290 in 2nd ed, pages 236-237 in 3rd ed. Figures 17-29, 17-30 & 17-31 under permanent right second molar for views and descriptions of two and three cusp types of mandibular 2nd premolar.
Read pages 290-291 in 2nd ed., pages 235-236 in 3rd ed.- Occusal Table Components

#21 Replaces "L".

See Chapter 15- page 234, 2nd ed., p. 189, 3rd ed. Figure 15-1 and Figure 15-2

Chapter 17 p..277, 2nd ed., p..225, 3rd ed. (Table 17-1 Anatomical Information on Permanent Premolars) under Distinguishing right from left states," Maxillary first premolar mesial features: marginal groove".
Ch. 17 p. 228 states, A mesial marginal groove is also sometimes present (Figure 17-13)".

Ch 17 p. 283 in 2nd ed., p. 229 in 3rd ed. under Proximal View Features states," the mesial surface of a maxillary second premolar is similar to that of a maxillary first premolat, except that the cusps are closer to being the same size and no mesiomarginal depression".
Ch 17 pg. 284 under Occlusal Table Components states, "The central groove is shorter on a maxillary second premolar than on a maxillary first premolar (Figure 17-18). A maxillary second premolar has numerous supplemental grooves radiating from the central groove".

Chapter 17 p. 286 in 2nd ed., p. 233, 3rd ed. states," The crown outline of the mandibular first premolar is diamond-shaped from the occlusal, with a notch in the mesial outline at the mesiolingual groove (Figure 17-22)

Chapter 17, page 285, 2nd ed, p.231, 3rd ed. states, ' The lingual cusp of a mandibular first premolar is usually small and non-functioning. The lingual cusp, then, is similar in appearance to the cingulum found on some maxillary canines, but it can vary considerably".

Ch.6, page 67, 2nd ed., pg.55, 3rd ed. Table 6-3 Common Dental Developmental Disturbances (Gemination) states," during the Cap Stage of development a large single-rooted tooth with one pulp cavity and exhibits "twinning" in the crown area. Normal number of teeth in dentition. May cause problems in appearance and spacing".