Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
33 Cards in this Set
- Front
- Back
|
What is the DAQT system |
Dentition-- (Perminent) Arch-- (Maxillary) Quadrant-- (Right) Tooth name-- (1st Premolar) |
|
|
What is the universal System? |
Tooth numbering clockwise from 1-32 in perm dentition and a-t in primary dent |
|
|
What is the ISO system? |
uses a 2 digit system, where the first digit is the quadrant and the second is the tooth number. (quadrants are 1-4 perm; 5-8 primary) (teeth are 1-8 perm and 1-5 prim. from midline) |
|
|
Palmer System |
Devides mouth ito 4 quadrants and then numbers teeth from 1-8 starting at teh central incisors, or A-E for deciduous teeth USES THE QUADRANT SECTION OVER THE # TO SHOW LOCATION IN THE MOUTH |
|
|
Characteristics of enamel |
-Outer surface of crown -hardest tissue in the body -no living cells -doesn't regenerate |
|
|
Characteristics of dentin |
-2nd hardes tissue in the body -yellowish in color gets darker with age -little nerve fibers that transmit pain -can regenerate |
|
|
Characteristics of Pulp |
-Soft tissue inside pulp -sensory for pain -parts are: pulp chamber, pulp horns, pulp canal
|
|
|
Characteristics of Cementum |
-Similar to bone in hardness/structure -covers dentin on roots only -attaches tooth to bone via fibers of the perodontal ligament |
|
|
what are the 3 conditions of cementum? |
1. Overlap: cementum overlaps the enamel slightly 60% 2. Butte Joint: C. goes right up to enamel 30% 3. Gap: gap between enamel and C. 10% |
|
|
Anatomical crown |
portion of a tooth covered by enamel |
|
|
anatomical root |
portion of a tooth covered by cementum |
|
|
Clinical crown |
portionof tooth that has erupted through soft tissue and is VISIBLE in the mouth |
|
|
Clinical root |
portion of anatomical root that is VISIBLE |
|
|
Cementoenamel junction |
CEJ: where crown and root join; where cemuntum meets enamel.
|
|
|
Height of contour/crest of curature: |
the widest portion of the tooth, the M/D height of contour is usually located at the ontact area, deflects food away from the soft tissue |
|
|
Embrasures |
Triangular shaped space created as the angular teeth come together; w/o these teeth would appear as perfectly rectangular. |
|
|
Line angles |
formed by junction of 2 surfaces |
|
|
Point angles |
Formed by junction of 3 surfaces (MLI)
|
|
|
Thirds: |
a crown or root surface is divided into 3rds either horiz. or vertically)
|
|
|
Crown-Horizontal |
-Cervical (gingival third) -Middle third -Incisal or occlusal third |
|
|
Crown-Vertical |
-Mesial third -Middle -Distal third |
|
|
Root -horizontal |
-Apical -middle -cervical |
|
|
Lobes: |
Most teeth have 4 lobes each lobe forms a cusp |
|
|
Cingulum |
a convex, rounded tubercle on the cervical third, all anterior teeth have cingulum |
|
|
Marginal Ridge |
rounded raised order on the Mesial and Distal of teeth |
|
|
Imbrication lines |
lines that run parallel to CEJ of the cervical 3rd of a newly erupted ant. tooth |
|
|
Pit |
rounded impression into the enamel usually found where 2 or more grooves meet
|
|
|
Developmental grooves |
narrow linear depression int he enamel, potential areas for decay |
|
|
Fissure |
incomplete closure of lobes (a wide groove) |
|
|
Fossa |
a large depression on a broad surface of a tooth |
|
|
Ridge |
raised linear areas that slope to a groove |
|
|
Furcation |
(root crotch) point at which the roots separate |
|
|
Developmental depression: |
shallow linear concavities located on root or crown |
