Midterm One: 300 Dental Anatomy Facts Minus Molars Flashcards
Primary teeth are (MORE OR LESS) mineralized than permanent teeth
Less
Difference in space from the primary to the permanent dentition is
2-4mm
Mamelons that remain beyond the age of 10 generally indicate an
open bite
Calcification of the primary roots is normally completed
3-4 years
The usual pattern of eruption for primary teeth is
Centrals Laterals 1st Molars Canines 2nd Molars
Front to back except _____; lowers before uppers except _____
canines, laterals
Primate space develops in the MX dentition between the
lateral and canine
Mandibular primary primate space is located between
Adult: canine and 1st premolar
Child: canine and 1st molar
Primary spacing for anterior teeth is most frequently caused by
growth of the dental arches
Direction of primary enamel rods in the cervical third is in _____ direction.
Permanent are in the _____ direction
occlusally
apically
Primary molars differ from permanent molars in that their roots are mo
divergent
Primary molar lacks an identifiable root
trunk
Primary mandibular central incisor has the smallest _______ crown dimension
Fa-Li
most bilaterally symmetrical tooth
Primary and permanent mandibular central incisor
In delayed resorption of primary incisors, the permanent incisors usually erupt ________
lingually “shark teeth”
Primary central incisor exhibits a prominent ______ ______ both on the facial and lingual surfaces
cervical ridge (buldge)
Primary canine longer incisal slope
mesio-incisal slope longer than disto-incisal
The cusp tip of the primary canine is generally off set to the
distal
MX first primary molar has a crown that somewhat resembles a
permanent premolar
MX 1st primary molar has roots that resembles a
permanent MX molar
Most prominent cervical ridge for primary MX teeth
on the MF surface of the 1st molar
Last primary teeth to erupt is the
MX 2nd molar
Which primary molar exhibits more cusps
primary 2nd molar (5)
vs. 3
Which primary tooth does not look like any permanent teeth
Primary 1st MN molar
Primary teeth that differ most from permanent teeth are the
MN 1st Molar
Incisors function
biting, tearing
tooth that has the greatest Fa-Li axial inclination
MX central
tooth with the greatest cervical curvature (on mesial) of any other tooth
MX central
CEJ dips deeper on MX central or lateral?
central
CEJ dips deeper on anterior or posterior?
anterior
CEJ dips deeper on MX or MD?
MX
CEJ dips deeper on mesial or distal?
mesial
GREATEST CEJ dip of all teeth
Mesial of the MX Central Incisor
Only anterior teeth that are wider mesio-distally than facio-lingually
MX Incisors
Greatest mesiodistal crown dimension of anterior tooth
MX Central Incisors
Tooth with identical measurements for incisol-cervical and mesio-distal
MX central
The contact between a MX central and lateral incisor makes embrasures - which is larger? Lingual or facial?
lingual embrasure larger than facial
which embrasure is smaller - the embrasure between the centrals or the embrasure between the central and lateral
between centrals
Tooth with most crown shape variation
MX lateral incisor
Which two teeth exhibit exhibits the most deviation in crown morphology
Third Molars
MX lateral incisors
Tooth most often is in abnormal relation and contact with adjacent teeth
MX lateral incisors
Two teeth most often congenitally missing
Third Molars
MX lateral incisors
non-molar tooth that most frequently has a mesial and distal pulp horn is the
MX central incisor
non-molar that is least likely to have a bifurcated root is the
MX central incisor
- The anterior tooth that most likely would demonstrate lingual pit caries is
MX lateral incisors
Tooth with a 54 has an anatomical feature, a DL groove that complicates root planning
MX lateral incisors
The disto-incisal angle of the _____ _______ has the greatest convexity of all MX anterior teeth
MX lateral
Teeth that generally have the most prominent marginal ridges of all anterior teeth
MX lateral incisors
Teeth that have the most distinct and deepest lingual fossa’s of all anterior teeth
MX lateral incisors
MX tooth that has the smallest mesio-distal crown width
MX lateral incisor
Tooth with mesio-distal measurement that is nearly identical to facio-lingual
MX lateral
Narrower mesio-distal width:
MX lateral incisor or MX central incisor
MX lat is narrower
Tooth that has distal contact that is farthest cervically of any incisor (usually very incisal)
MX lateral
Tooth that has distal contact centered both inciso-cervically and facio-lingually
MX lateral
Tooth root equal or larger than MX central
MX lateral
tooth distinguished by a greater cervical curvature on the mesial than distal
MN centrals
teeth that most frequently have concave areas on M & D root surfaces
MN centrals and laterals
smallest crown dimensions of any tooth
MN centrals