THE FINAL COUNTDOWN-Part I (Primary's and Rando's) Flashcards
Which anatomy is constructed first: positive or negative?
Positive (convex/raised) constructed first, then displays negative anatomy
What are type of ridges are ONLY found on posterior teeth and extend from a cusp tip to the central part of the occlusial surface?
Triangular Ridges
When does CALCIFICATION of PRIMARY teeth begin?
13-16 weeks in utero!
What is the order of calcification of the primary teeth? FOCUS especially on first and last!
(FIRST)Central Incisors>(JUMP)>1st molar>Lateral Incisor>Canine>2nd Molar (LAST)
When have all the primary teeth at least initiated calcification?
18-20 weeks in utero
Which primary teeth form from only ONE center of calcification (1 lobe)? Are there mamelons present? Are there developmental depressions evident?
Primary Anteriors….NO mamelons…NO developmental depressions evident
Speaking of calcification: Which Permanent teeth are initiating calcification from birth to 1 year of age? (1st Class)
Don’t worry too much about order: 1st Molars–>Centrals—>Canines–>Laterals
Which “group 2” permanent teeth are calcifying from 2 to 4 years of age?
PreMolars and Second Molars
What are the Third and final group of permanent teeth to calcify? WHEN do they begin by?
the WIZZYs by 9 years of age
Concerning Mammalian Phylogenic Development: What classification of cusp forms do humans have? What shapes are involved?
Quad-Ri-Tuber-Cular Molars: 4 cusps in a rectangular or rhomboid form
Physiological Tooth Form: What are the only teeth in occlusion to only contact 1 opposing tooth? (Also, can you draw the occlusion chart???
Man Central Incisor and Max 3rd Molar
Mandibular Arch-Heights of Curvature of the Cervical Line! The Cervical Line curves in a _______ direction on the _______ surfaces of the tooth.
Coronal….Proximal
Mandibular Arch-Heights of Curvature of the Cervical Line! The measurement is from the lowest point at the ________ to the highest point in the middle of the _______ surface.
cervical line….proximal surface
Mandibular Arch-Heights of Curvature of the Cervical Line! WHICH teeth have the most measurable curvature?
Anterior Teeth!
Mandibular Arch-Heights of Curvature of the Cervical Line! Which teeth have little or no curvature?
Molars
Mandibular Arch-Heights of Curvature of the Cervical Line! Which proximal surface ALWAYS has the GREATEST curvature?
the MESIAL!
Mandibular Arch-Heights of Curvature of the Cervical Line! What is the LARGEST Cervical Line Curvature in mm, which tooth, and Which proximal surface??
MANDIBULAR central….3.0mm…Mesial(DUH)
Mandibular Arch-Heights of Curvature of the Cervical Line! What is the DISTAL cervical line curvature on the mandibular central incisor in mm?
2.0mm(compared to 3.0mm on the mesial!)
Which PDLs are located in the cervical third of the crown and root that influence ROTATION of a tooth within the alveolus?
Circular(Circumferential)
Embrasures: What is the largest embrasure in the maxilla?
Distal of Canine and Mesial of 1st PM
Embrasures: What is the smallest embrasure in the POSTERIOR maxilla? (what is the smallest embrasure in the whole maxilla?
Distal of 1st Molar and Mesial of 2nd Molar (smallest in whole maxilla is the midline)
Tooth Form Generalizations: ______ portions of crowns are generally more developed than the ______.
Mesial more developed than distal
Tooth Form Generalizations: _____ cusps are larger then _____ cusps.
Mesial are larger then distal
Tooth Form Generalizations: The Mesial marginal ridges are usually ______ than distal Marginal ridges…WHAT IS THE EXCEPTION??
taller….EXCEPT for the MANDIBULAR FIRST PM
Tooth Form Generalizations: All molars TAPER in what proximal directions?
Mesial—->Distal (MesioDistally)
Tooth Form Generalizations: All teeth taper faciolingually EXCEPT…(hint: 2 teeth)
- Maxillary 1st Molar 2.Y-grooved Mandibular 2nd PM
Root positionings and angulations: Molar roots of primary teeth _____ markedly and ____ out rapidly as the apices are approached.
FLARE….thin
Root positionings and angulations: Primary roots are ______ and _____ when compared to crown width and length.
Narrow and Long
Primary Mandibular Canine-Facial View: It is very similar in form and size to the maxillary canine, except that the specific anatomy is _________.
LESS DEVELOPED
Primary Mandibular Canine-Facial View: The crown may be ___mm shorter and the root ___mm shorter than the maxillary canine.
crown 0.5mm……. root 2.0mm (woah)
Primary Mandibular Canine-Facial View: Where is the cusp tip positioned? What does this do to the M and D cuspal ridges? How does this compare to the Maxillary Canine??
MESIAL to the center….Longer Distal cuspal ridge than Mesial….It is OPPOSITE to the Maxillary!
Primary Mandibular Canine-Facial View: Is the root tip curved? If so what direction?
Nope it’s snot.
Primary Mandibular Canine-Facial View: The ______ outline of the crown is STRAIGHT and the _______ outline is CONVEX.
MESIAL=STRAIGHT……DISTAL=CONVEX
Primary Mandibular 1st Molar-Occlusial View:::What is the crown outline shape??
Rhomboidal!
Primary Mandibular 1st Molar-Occlusial View::: Primary mandibular molars are WIDER ________ than they are ________.
WIDER MESIODISTALLY than they are faciolingually
Primary Mandibular 1st Molar-Occlusial View::: Which line angle is really prominent?
MesioFacial line angle (really awkwardly shaped in that area!)
Primary Mandibular 1st Molar-Occlusial View::: What is the order of CUSP size from LARGEST to smallest?
Largest: MF—->ML—>DF—->DL(smallest)
Primary Mandibular 1st Molar-Occlusial View::: What are the three developmental grooves?
- long Central 2. short Facial 3. (really) short Lingual
Primary Mandibular 1st Molar-Occlusial View::: What are the three fossae present?
1.Central 2.Mesial Triangular 3.Distal Triangular
Primary Mandibular 1st Molar-Occlusial View::: Which two directions does the crown CONVERGE?
the Lingual and the Distal (pretty standard for all teeth!)
Which tooth does not resemble ANY other tooth known to man? (permanent OR primary)
The Primary Mandibular 1st Molar
Primary Mandibular 2nd Molar-Facial View= Which PERMANENT tooth does this crown resemble?
The perm mand 1st molar
Where are the contact areas (which 1/3) of a Primary Mandibular Second Molar?
Middle Third
Primary Mandibular 2nd Molar-Facial View=HOW many cusps are you able to see!!??
5 yo!
Primary Mandibular 2nd Molar-Facial View=How would you describe the sizes of the Facial cusps?
All close to the same size
Primary Mandibular 2nd Molar-Facial View= How many facial developmental grooves do you see?
2—>MF and DF
Primary Mandibular 2nd Molar-Facial View=Is the cervical line straight across?
NO—it has an APICAL DIP in the area of the Bifurcation (about the middle)
Primary Mandibular 2nd Molar-Facial View=How many roots are there on this tooth?
2—Mesial and Distal
Which is larger: Primary Man 1st Molar or Primary Man 2nd Molar?
Primary Man 2nd is larger then the 1st
