Advanced Dental Admission Test (ADAT)

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Prepare for the Advanced Dental Admission Test (ADAT) with our comprehensive quiz. Enhance your knowledge with engaging flashcards and challenging questions. Get equipped for success on your dental admissions journey!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the range of horizontal axis rotation when opening the mouth?

10-15 mm
20-25 mm
30-35 mm
40-45 mm

The correct answer is: 20-25 mm

The range of horizontal axis rotation when opening the mouth is accurately represented by the choice that indicates a range of 20-25 mm. This measurement refers to the amount of movement that occurs at the temporomandibular joint (TMJ) during the initial phase of mouth opening, primarily characterized by a hinge-like rotation. As the mandible rotates around the horizontal axis, there is a limited distance it can travel before additional movements, such as translation or further opening, begin to occur. This hinge movement is essential in understanding jaw mechanics and plays a critical role in various dental procedures and assessments. The selected range aligns well with clinical observations and studies, providing essential benchmarks for dental professionals when evaluating a patient's range of motion and identifying any potential disorders or dysfunctions related to the TMJ.