Dental Anatomy Permanent Incisors Flashcards
what is the primary function of incisors?
biting
which permanent tooth has the greatest FL axial inclination?
maxillary central incisors
which permanent tooth has the greatest cervical curvature of any other tooth?
- maxillary central
- curvature is on the mesial
what are the 3 rules associated with cervical curvatures?
dips deeper on…
- anterior teeth than posterior teeth
- maxillary than mandibular
- mesial than distal
which teeth are the only anterior teeth that are wider MD than FL?
maxillary central incisors
which tooth has the greatest MD crown dimension of any other anterior tooth?
maxillary central incisors
which two measurements of maxillary central incisors are nearly identical?
incisocervical and mesiodistal
the contact between a maxillary central and a lateral incisor makes the lingual embrasure (smaller/larger) than the facial
larger
the incisal embrasure between the maxillary centrals is (smaller/larger) than between the central and lateral
smaller
which permanent tooth has the most variation in crown shape?
maxillary lateral incisors
the ___ exhibits the most deviation in crown morphology, followed by the ___
- 3rd molars
- maxillary lateral incisor
which tooth is most often in abnormal relation and contact with adjacent teeth?
maxillary lateral incisor
the ___ is most often congenitally missing, followed by ___
- 3rd molars
- maxillary lateral incisors
the non-molar tooth that most frequently has a M and D pulp horn is the ___
maxillary central incisor
the non-molar tooth that is least likely to have a bifurcated root is the ___
maxillary central incisor
the anterior tooth that most likely would demonstrate lingual pit caries is the ___
maxillary lateral incisor
what anatomical feature of maxillary lateral incisors complicates root planing?
DL groove
the distoincisal angle of which teeth has the greatest convexity of all maxillary anterior teeth?
maxillary lateral incisor
which teeth generally have the most prominent marginal ridges of all anterior teeth?
maxillary lateral incisors
which teeth have the most distinct and deepest lingual fossas of all anterior teeth?
maxillary lateral incisors
which tooth has the smallest MD crown width of any maxillary tooth?
maxillary lateral incisor
which maxillary tooth has a MD measurement that is nearly identical to its FL measurement?
maxillary lateral incisor
the MD width of the maxillary lateral incisor is (wider/narrower) than the maxillary central incisor
narrower
which incisor has a distal contact that is the farthest cervical of any incisor?
maxillary lateral
the maxillary lateral distal contact is located where?
centered both inciso-cervically and facio-lingually
the maxillary lateral incisor is usually equal to or larger than the ___ in root length
maxillary central incisor
how are mandibular central incisors distinguished from each other?
their cervical curvature, which is greater on the M than the D
mandibular central and laterals most frequently have concave areas on which root surface?
M and D
which tooth has the smallest crown dimensions of any tooth?
mandibular central incisors
which tooth has the most symmetrical crown?
mandibular central incisor
which tooth has the sharpest set of incisal angles (M and D)?
mandibular central incisors
the proximal contacts of the mandibular central incisors are ___
at the same level (incisal)
which permanent teeth generally only occlude with only one opposing tooth?
mandibular central incisors and maxillary 3rd molars
___ is the first succedaneous tooth to erupt in the mouth
- permanent mandibular central incisor
- remember, the permanent 1st molar is not succedaneous
___ and ___ embrasures of mandibular central incisors may be the same size
B and L
the crown of the mandibular lateral incisor tilts (mesially/distally) in relation to the long axis
distally
the MD width of the mandibular lateral incisor is (narrower/wider) than the mandibular central incisor
wider
