When the dental arch or part of it is farther away from the FH plane; the deviation is termed as:
Correct Answer: Abstraction
Description: Vertical deviations with respect to the FH plane are:
Attraction: When the dental arch or part of it is closer to the Frankfort horizontal plane, it is referred to as attraction.
Abstraction: When the dental arch or a part of it is farther away from the Frankfort horizontal plane, it is referred to as abstraction.
Ref: Textbook of orthodontics Gurkeerat Singh 2nd ed page no 169
Category:
Dental
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