Dental Anatomy and Occlusion Flashcards
7 cards from real NDEB 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
The Wilson curve is best described as:
Answer: The lateral curve formed through the buccal and lingual cusp tips of mandibular posterior teeth
The Wilson curve (curve of Wilson) is the mediolateral curvature formed by the buccal and lingual cusp tips of mandibular posterior teeth in the frontal plane.
Fremitus in dentistry refers to:
Answer: Palpable or visible vibration in a tooth when the patient taps or slides the teeth together
Fremitus is the vibration detected by placing a finger on the facial surface of a tooth while the patient performs occlusal or excursive contacts, indicating excessive occlusal force on that tooth.
The long axis of a tooth is defined as:
Answer: The axis running from the cusp tip or incisal edge to the root apex
The long axis of a tooth runs from the highest point of the crown (cusp tip or incisal edge) through the center of the tooth down to the root apex.
Overjet is defined as:
Answer: The horizontal distance between the labial surface of the maxillary incisors and the labial surface of the mandibular incisors
Overjet is the horizontal (sagittal) distance measured from the labial surface of the mandibular central incisor to the labial surface of the maxillary central incisor.
The ideal vertical overlap (overbite) of maxillary over mandibular incisors in normal occlusion is approximately:
Answer: 2–4 mm
A normal overbite of approximately 2–4 mm (covering about 20–30% of the mandibular incisor crown) is considered ideal in a Class I occlusion.
The palatogingival groove is a developmental anomaly most commonly associated with which tooth?
Answer: Maxillary lateral incisor
The palatogingival groove (radicular lingual groove) is most commonly found on the maxillary lateral incisor and can extend from the cingulum onto the root, creating a significant periodontal risk.
Which statement best describes the concept of freeway space (interocclusal rest space)?
Answer: The vertical distance between the upper and lower teeth when the mandible is in physiologic rest position
Freeway space is the vertical distance (typically 2–4 mm) between the occlusal surfaces when the mandible is at physiologic rest position, representing the difference between rest vertical dimension and occlusal vertical dimension.