NRE Dental Step I MCQs

Crossbite is an abnormal transverse or anteroposterior relationship in which teeth occlude opposite to the expected position.

Cephalometric analysis is measurement of craniofacial relationships on a standardised skull radiograph.

Functional appliance is an orthodontic appliance designed to modify jaw posture and influence growth or tooth position.

Fixed appliance is an orthodontic system attached to teeth using brackets and wires.

Retention is the phase after active orthodontic treatment intended to maintain corrected tooth positions.

Class II malocclusion is a distal relationship of the mandibular arch relative to the maxillary arch.

Class III malocclusion is a mesial relationship of the mandibular arch relative to the maxillary arch.

Overjet is horizontal overlap of the upper incisors relative to lower incisors.

Overbite is vertical overlap of the incisors.

Oroantral communication is an abnormal opening between the oral cavity and maxillary sinus.

Ludwig angina is rapidly spreading cellulitis of the submandibular spaces that can threaten the airway.

Pericoronitis is inflammation of soft tissue surrounding a partially erupted tooth.