Question 102 · LDEK · Model analysis
Andrews’ keys to normal occlusion do not include:
- A. molar relationship: the distal vestibular cusp of the first upper permanent molar occludes with the mesial surface of the mesial vestibular cusp of the first lower permanent molar.
- B. crown inclination.
- C. torque.
- D. fact that rotated molars and premolars take up more space in the arch.
- E. flat curve of Spee: its depth shouldn’t exceed 1.5 mm.
Hint
Compare each description with Andrews' original wording, paying attention to which lower molar the upper distobuccal cusp contacts.
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