Dental Anatomy and Occlusion Flashcards
7 cards from real NBDE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Dental Anatomy and Occlusion flashcards as text
In Angle's Class II, Division 2 malocclusion, the maxillary central incisors are characteristically:
Answer: Retroclined with a deep overbite
Class II, Division 2 is characterized by retroclination (lingual tipping) of the maxillary central incisors and an increased deep overbite.
The oblique ridge on the maxillary first molar connects which two cusps?
Answer: Distobuccal and mesiolingual cusps
The oblique ridge on the maxillary first molar is a transverse ridge connecting the distobuccal and mesiolingual cusps diagonally across the occlusal surface.
The Bennett movement refers to:
Answer: The lateral bodily shift of the mandible toward the working side
Bennett movement is the lateral bodily shift of the entire mandible toward the working side during lateral excursion.
Which tooth is most commonly congenitally missing (excluding third molars)?
Answer: Mandibular second premolar
Excluding third molars, the mandibular second premolar has the highest prevalence of congenital absence (hypodontia).
The term 'intercuspation' refers to:
Answer: The fitting together of upper and lower cusp tips in occlusion
Intercuspation describes the occlusal relationship where opposing cusp tips, ridges, and fossae fit together when the teeth are in contact.
Which permanent tooth has the largest pulp chamber relative to its crown size?
Answer: Maxillary first molar
The maxillary first molar has the largest pulp chamber of all permanent teeth, which is relevant for endodontic access preparation.
During mastication, the power stroke of the mandible occurs:
Answer: During the closing phase as teeth come into contact
The power stroke occurs during the closing phase of mastication when teeth contact food and generate occlusal forces for food breakdown.