What is the approximate faciolingual angulation of the maxillary central incisor? ___________________?
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Answer: B. 28°
Explanation
The faciolingual angulation of the maxillary central incisor relative to horizontal is twenty-eight degrees. This specific crown inclination helps establish proper anterior guidance and overbite relationships. Anatomic angulations are measured precisely during orthodontic and prosthodontic analyses. Tooth angulation refers to the tilt of the long axis of a tooth relative to a reference plane. Maxillary incisors exhibit labial crown torque to achieve correct functional contact with mandibular teeth. Cephalometric radiographs are used by orthodontists to evaluate these exact dental inclinations.
Orthodontists adjust tooth angulation during fixed appliance therapy to optimize facial esthetics. Incorrect incisor inclination can lead to functional interferences and premature occlusal wear. Detailed knowledge of tooth positioning is essential for planning successful orthodontic treatments. Twenty degrees is too upright and does not match standard maxillary central incisor angulation. Thirty-three degrees overestimates the standard labial crown inclination measurement. Thirty-eight degrees is significantly steeper than normal cephalometric norms for this tooth.
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