Reading...
Play button
Play button
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;
60 Cards in this Set
- Front
- Back
|
What are the funtions of the incisors?
|
Cutting and incising food.
Articulation and speech Esthetics and appearance |
|
|
Naturally occuring open contact between the teeth.
Common between the maxillary incisors. |
Diastema
|
|
|
May be a hereditary trait or may be cause by thick labeial frenum extending between centrals.
Can be corrected by surgery or orthodontics |
Diastema
|
|
|
Grooves present on incisal edge at eruption.
Usually worn away with chewing (attrition) If still present on teeth it is because teeth are not in contact. |
Mamelons
|
|
|
How many developmental depressions are created on the incisal edge.
|
2
|
|
|
What causes developemental depression.
|
3 lobes
Distal labial lobe Mesial labial lobe Mesial labial lobe (If viewing the labial view) |
|
|
The 4th developemental lobe of the tooth.
Present on lingual surface of all incisors. |
Cingulum
|
|
|
These central or laterals may have a lingual pit.
Usually more common on lateral incisors. |
Maxillary incisors
|
|
|
Runs in a mesial --> distal direction.
More prominent on the maxillary central incisors. Appear on crown surface and appear closer together at cervical area of crown. |
Imbrication Lines
|
|
|
What is the groove inbetween ridges on the imbrication line?
|
Perikymata
|
|
|
When is evidence of calcification appear on the permanent maxillary central?
|
3 months
|
|
|
At what age does the permanent maxillary central erupt
|
7-8 years
|
|
|
When is the root complete on the maxillary central
|
10 years
|
|
|
When does evidence of calcification appear on the permanent mandibular central
|
3 months
|
|
|
When does the permanent mandibular central erupt?
|
6-7 years
|
|
|
When is the root complete on the permanent mandibular central?
|
9 years
|
|
|
When does evidence of calcification appear on the permanent maxillary lateral?
|
1 year
|
|
|
When does the permanent maxillary lateral erupt?
|
8-9 years
|
|
|
When is the root complete on the permanent maxillary lateral?
|
11 years
|
|
|
At what age is there evidence of calcification of the permanent mandibular lateral?
|
4 months
|
|
|
At what age does the permanent mandibular later erupt?
|
7-8 years
|
|
|
When is the root complete on the permanent mandibular lateral?
|
10 years
|
|
|
Larger and wider incisor
Pronounced lingual anatomy Crown is wider M->D than F->L Central is larger than lateral Rounded facial outline from the incisal aspect Incisal edge is labial to root axis from the proximal view. |
Maxially Incisors
|
|
|
Smaller and narrower
Lingual anatomy not pronounced Crown wider F->L than M->D Lateral larger than central Flatter facial outline from incisal aspect Roots broad (F-L) and flat Incisal edge is lingual to root axis from proximal views. |
Mandibular Incisors
|
|
|
Widest crown M-D of any permanent anterior teeth.
Sharp MI angle, rounded DI angle Pronounced lingual anatomy with broad cingulum Conical shaped root Root 1 1/2 times longer than crown HOC more incisally located on the mesial Greatest depth of curvature of cervical line of any permanent tooth. |
Maxillary Cenral
|
|
|
What ridges border the lingual fossa?
|
Marginal ridge and Incisal ridge
|
|
|
Are the angles more or less rounded than other anterior teeth on maxillary central incisors?
|
Less Rounded
|
|
|
Which cervial line has a more pronounced curvature?
|
On the mesial rather than the distal
|
|
|
Where is the incisal ridge centerd over on the maxillary central?
|
Over the root
|
|
|
Appears narrower M-D than central incisor.
More rounded incisal angles. Very pronounced lingual anatomy but cingulum not as broad. All curvatures and convexities more distinct. Most common congenitally missing tooth. Smaller in most dimensions than central except root is almost same length as central. |
Maxillary Lateral
|
|
|
Which tooth is the CEJ curvature deep but not as great as the central?
|
Maxillary lateral
|
|
|
What lingual anatomy is more pronounced on the maxillary lateral vs. the central?
|
Fossa, ridges, grooves, or pits
|
|
|
Which labial surface is more complex?
The maxillary lateral or the maxillary central |
Maxillary lateral
|
|
|
Which tooth closely resembles a canine from an incisal view.
|
Maxillary lateral
|
|
|
How many teeth exhibit straight cylindrical roots.
Name the tooth/teeth |
Maxillary cenral and Maxillary lateral.
|
|
|
Lateral root is thinner and often curves distally near apex
|
Maxillary lateral
|
|
|
Which maxillary incisor has a blunt root?
|
Maxillary central
|
|
|
Vary in form more than any tooth in the mouth (exept third molars)
|
Maxillary laterals
|
|
|
Which teeth can be classified as "peg shaped"?
|
Maxillary laterals
|
|
|
What is the smallest tooth in the mouth?
|
Mandibular central
|
|
|
From facial view - bilaterally symmetrical in appearance.
Difficult to differentiate right and left due to symmetry: look for rounded DI angle or cervial line. Incisal view - straight edge. Depression on root surface is deeper on distal. Smallest tooth in the mouth. Occludes with only one tooth. |
Mandibular Central
|
|
|
Smooth facial surface
|
Mandibular Central
|
|
|
Straight outline mesially and distally
|
Mandibular Central
|
|
|
HOC in incisal third
|
Mandibular Central
|
|
|
Small cingulum and shallow fossa lingually, very smooth anatomy
|
Mandibular Central
|
|
|
Contains no pits
|
Mandibular Central
|
|
|
HOC in cervial third labially and lingually
|
Mandibular Central
|
|
|
On an incisal view, it has a straight edge
|
Mandibular central
|
|
|
Shows more wear on the incisal edge on labial aspect
|
Mandibular Central
|
|
|
Incisal edge tips lingually
|
Mandibular Central
|
|
|
Less symmetrical and larger
From incisal view - incisal edge and crown appears twisted toward the distal. Depression on root surface is deeper on the distal side of root. Overall bigger, wider, and longer. More concave and convex |
Mandibular laterals
|
|
|
More rounded appearance than central
|
Mandibular lateral
|
|
|
Deeper developmental grooves
|
Mandibular lateral
|
|
|
HOC in incisal third, slightly gingival on distal.
|
Mandibular lateral
|
|
|
Lingual features (ridges, cingulum, tubercles) more prominent than centrals
|
Mandibular lateral
|
|
|
HOC in gingival third
|
Mandibular lateral
|
|
|
More pronounced cervical line curvature on mesial
|
Mandibular lateral
|
|
|
Slope of incisal edge helps differentiate this tooth from the tooth next to it.
|
Mandibular lateral
|
|
|
Linguoincisal ridge thicker.
|
Mandibular lateral
|
|
|
Crown appears twisted on root
|
Mandibular lateral
|
