Quiz 2 - Review Permanent Mandibular Anterior Flashcards
Facial View - Permanent Mandibular Central Incisors The crown outline?
Trapezoidal with the longer parallel side at incisal edge
Facial View - Permanent Mandibular Central Incisors Explain the incisal edge?
Straight and at a right angle to the long axis of the tooth
Facial View - Permanent Mandibular Central Incisors The M and D incisal line angle are both said to be ________
sharp
Facial View - Permanent Mandibular Central Incisors Which incisal line angle is more rounded?
Distal
Facial View - Permanent Mandibular Central Incisors Where is the proximal contact and what is uniques about the M and D levels?
within the incisal 1/3 - with wear the contact can be at the the incisal edge M and D are at the same level
Facial View - Permanent Mandibular Central Incisors The incisal 1/3 of the crown surface vs. the cervical 2/3?
Incisal - flat Cervical - convex
Incisal View - Permanent Mandibular Lateral Incisors What is a greater measurement FL or MD?
FL > MD
Incisal View - Permanent Mandibular Lateral Incisors The _________ contact is centered FL but the _________ contact will be slightly to the lingual of the FL bisector
mesial distal
Incisal View - Permanent Mandibular Lateral Incisors The incisal ridge will be relatively?
Straight but it is not straight across the tooth MD - it slants to the lingual as its distal end and is not parallel to the FL bisector
Incisal View - Permanent Mandibular Lateral Incisors The crest of the cingulum lingually will be slightly __________ to the MD bisector
distal
Incisal View - Permanent Mandibular Lateral Incisors This view is said to have what shape to the tooth?
Twisted or rotated
Comparison of Permanent Mandibular Incisors Which one is smaller?
central
Comparison of Permanent Mandibular Incisors Which one is more angular?
central
Comparison of Permanent Mandibular Incisors Which root surfaces have depressions?
Both the M and D have depressions and are rarely bifurcated - the lateral is more likely to exhibit two pulp canals
Comparison of Permanent Mandibular Incisors The central incisor exhibits ____________, while the lateral incisor exhibits a __________ slightly on the root base, when viewed from the incisal.
bilateral symmetry twisting