Dental Anatomy Flashcards
which anterior teeth have an offset cingulum?
mandibular lateral
mandibular canine
maxillary central
Which anterior teeth have a cingulum located in the center of the lingual surface?
maxillary lateral
maxillary canine
mandibular central
What are 3 things common to all mandibular incisors?
- indistinct cingula without any grooves or pits
- incisal edges are lingual
- facial surfaces are convex
How do the marginal ridges differ between the mandibular central and lateral incisors?
the mandibular lateral has a mesial marginal ridge that is longer than the distal.
The mandibular centrals have marginal ridges that are equal in length
Which teeth/view are viewed as triangles?
all anterior teeth from the mesial and distal
Which teeth/view are viewed as trapezoids with the longest uneven side toward the occlusal?
All teeth from the facial or lingual
Which teeth/view are viewed as trapezoids with the SHORTEST uneven side toward the occlusal?
maxillary posterior teeth from the mesial or distal
Which teeth/view are viewed as rhomboids?
All mandibular teeth from the mesial or distal
What is the shape of the pulpal canal in a mandibular lateral incisor?
it is wider in the mesiodistal direction in the coronal canal and wider in the labiolingual direction in the mid-canal
What is the only anterior tooth that has a distoincisal angle that is just as sharp as the mesioincisal angle?
Mandibular centrals
What is the only anterior tooth that has a pulp chamber that is wider mesiodistally than labiolingually?
maxillary centrals
Which anterior tooth contacts both anterior and posterior teeth in maximum intercuspation?
maxillary canine
On a maxillary canine, where is the cusp tip in relation to the long axis of the tooth?
it is displaced LABIALLY and MESIALLY
On a maxillary canine which side (mesial or distal) has a greater curvature?
mesial
On a maxillary canine, which cusp ridge is more straight?
mesial
On a maxillary canine, which cusp ridge is longer?
distal is longer
On a maxillary canine, which direction does the root curve USUALLY
to the distal, but this is not always true
What is unique about the facial surface of canines?
it contains a labial ridge
What is unique about the occlusion of the canine?
It is the only cusped tooth that features a functional LINGUAL surface instead of a function occlusal surface.
What is the eruption sequence for maxillary permanent teeth?
781-00*62
stars have a range of 2 years instead of 1
What is the eruption sequence for mandibular permanent teeth?
679-0161
stars have a range of 2 years instead of 1
what are some differences between mandibular and maxillary canines?
Mandibular: mesial border (contact area) is much straighter (Maxillary: none of the borders are really that straight)
Mandibular: The mandibular canine has a continuous convex facial surface when viewed from the mesial or distal
What is the longest tooth in the mouth?
maxillary canines
On a canine, which dimension is the longest between faciolingual or mesiodistal?
faciolingual is longer