300 OA Facts Flashcards
Primary teeth are ______ than permanent teeth are consequently more worn
Less mineralized
What is the difference in space from the primary to the permanent dentition?
2-4mm
Mamelons that remain beyond the age of 10 generally indicate an?
Open bite
Calcification of the primary roots is normally completed at age?
3-4 years of age
What is the usual pattern of eruption of primary teeth?
Central’s, laterals, 1st molars, canines, 2nd molars
The primate space develops in the Mx primary dentin between?
Between the lateral and canine
The mandibular primary primate space is located between?
Between the canine and first molar
The primary spacing for the anterior teeth is most frequently caused by the?
Growth of the dental arches
The direction of the primary enamel rods in cervical third is in the?
Occlusal direction
Primary molars differs from permanent molars in that their roots are more?
Divergent
The primary molar lacks an identifiable?
Root trunk
The primary Mn central incisor has the smallest _______ crown dimension?
Faciolingual
The primary and permanent Mx central incisor is the most?
Bilaterally symmetrical tooth
In delayed resorption of primary incisors the permanent incisors usually erupt?
Lingual (shark teeth)
The primary central incisor exhibits a prominent _______ on the facial and lingual surfaces?
Cervical ridge
From the facial view the crown of a primary canine has a?
Mesio-incisal slope longer than the distoincisal
The cusp tip of the primary canine is generally off set to the?
Distal
The Mx 1st primary molar has a crown that somewhat resembles a?
Permanent premolar
The Mx 1st molar has roots that resembles a typical?
Permanent Mx molar
The cervical ridge is most prominent for the primary MX teeth on the what surface of the 1st molar?
MF surface
The primary MX 2nd molar is the primary tooth that generally has an?
Oblique ridge
Primary 2nd molar is the only primary posterior tooth that has?
And oblique and transverse ridges and DL groove
The primary end molar generally exhibits a ?
Cusp of carabelli
What is the last primary teeth to erupt?
MX 2nd molars
The primary 2nd molar exhibits more cusps than?
Primary 1st molar
The primary tooth that has the most distinctly prominent facial cervical ridge is?
MN 1st molar
Facial view of a primary MN 1st molar the CEJ is most apically positioned on the ?
Mesial 1/3
The primary MN 1st molar usually exhibits a ?
Distal triangular fossa
Central fossa usually displaced to the distal
The primary MN 1st molar has the MOST distinct?
Distinct transverse ridge
The primary 1st MN molar does NOT look like any?
Permanent tooth
The primary teeth that differ most from permanent teeth are?
MN 1st molars
The highest and sharpest cusp on a primary Mn 1st molar is the ?
Mesiolingual
The teeth whose function is primarily biting?
Incisors
The Mx central has the greatest?
Faciolingual axial inclination
The tooth that has the greatest cervical curvature (on mesial) of any other tooth?
Mx central
The CEJ dips dippers on?
“Think Mx Central”
- ant teeth than post teeth
- Mx than MD
- mesial side of tooth than distal
- greatest on mesial of the MX central
The only anterior teeth that are wider mesio-distally than faciolingually
Mx incisors
Has the greatest MD crown dimension of any ANTERIOR tooth
Mx central
This tooth has measurement that is nearly identical for inciso-cervical versus mesio-distal?
Mx central
