INBDE (Integrated National Board Dental Examination) Practice Exam

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What is represented by HCI on an articulator and is a posterior determinant of occlusion?

Mandibular guidance
Condylar guidance
Incisal guidance
Canine guidance

The correct answer is: Condylar guidance

The answer represented by HCI (Horizontal Condylar Inclination) on an articulator is condylar guidance. Mandibular guidance is represented by MIP (maximum intercuspation) and is also known as the occlusal clearance angle. Incisal guidance is not represented by HCI, it is the angle at which the anterior teeth guide the mandible in protrusion. Canine guidance is the guidance provided by the canines during lateral movements of the mandible.