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Third molar roots continue to calcify until about 25

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Third molar roots continue to calcify until about 25 years of age.ANS: TCalcification of permanent teeth begins soon after birth and continues until about the 25thyear, when roots of the third molars become calcified. The last area of any tooth to becomecalcified is the apex of the root.REF:p. 44OBJ: To understand how the growth centers or lobes fuse and form a toothNAT: CDA: GC I.A.7. Identify basic oral and dental anatomy, physiology and development,including but not limited to: teeth.TOP: BLOOM: Remembering
Anatomy of Orofacial Structures 8th Edition Brand Test BankChapter 06: OcclusionBrand/Isselhard: Anatomy of Orofacial Structures, 8th EditionMULTIPLE CHOICE1.Class II occlusion is called distoclusion because the distal surface of the mandibular canine isdistal to the mesial surface of the maxillary canine.a.Both the statement and the reason are correct and related.b.Both the statement and the reason are correct but are NOT related.c.The statement is correct, but the reason is NOT correct.d.The statement is NOT correct, but the reason is correct.e.NEITHER the statement NOR the reason is correct.ANS: AClass II occlusion is called distoclusion. This question addresses the canine relationship;however the dental classification, described by E. H. Angle, more frequently relies on therelationship between maxillary and mandibular first molars. Note that for both Class II andClass III occlusion, the discrepancy must be by at least the width of a premolar.REF:p. 62OBJ: To identify the three occlusal classificationsNAT: CDA: GC I.A.7. Identify basic oral and dental anatomy, physiology, and development,including but not limited to: teeth.TOP: BLOOM: Understanding2.Classification of occlusion by the Angle system primarily relies on the relationship betweenmaxillary and mandibular canines because the anatomical features of molars are more difficultto interpret.N R I G B.C Ma.Both the statement and theUreasSonNareTcorrectOand related.b.Both the statement and the reason are correct but are NOT related.c.The statement is correct, but the reason is NOT correct.d.The statement is NOT correct, but the reason is correct.e.NEITHER the statement NOR the reason is correct.ANS: EClassification of occlusion by Dr. Angle’s system, the most commonly utilized dentalclassification system, primarily relies on molar relationship. The anatomical features ofmolars provide optimal means of assessing occlusal patterns. The canine relationship isutilized when one or more first molars are missing or there is another reason that makesanalysis of molar relationship not possible.REF:p. 62 | p. 64OBJ: To identify the three occlusal classificationsNAT: CDA: GC I.A.7. Identify basic oral and dental anatomy, physiology, and development,including but not limited to: teeth.TOP: BLOOM: Understanding3.

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Orofacial Structures

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