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30 Cards in this Set
- Front
- Back
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arch trait incisor
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mandibular
- generally smaller - look more alike -more similar sized -crowns are flatter on M and D contact closer to incisal edge -wider F-L than maxillary wider M-D -longer roots proportional to crowns -smoother lingual surfaces |
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Traits - Maxillary central
- Maxillary lateral labial view |
Central
-larger crown, wider cervical -MI angle = right angle -D contact is more incisal -less likely root tip deflection -I edge more horizontal Lateral -narrower -cervical line -MI angle is rounder - D contact mid 3rd -Root tip w/ distal deflection -I edge slopes D |
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MAXILLARY right from left incisor lingual view
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central
-cingulum toward distal -D marginal ridge more curved than mesial Lateral - longer, straighter mesial marginal ridge BOTH have longer mesiolingual marginal ridge |
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Maxillary Incisors Labial view
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- crown longer IC than MD
- narrowest cervical 1/3 - lateral incisor much more narrow MD - lateral incisor labial surface more convex than central incisor -lateral mamelons are less common and prnounced |
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maxillary incisors labial view
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Max. centrals
- (MI) angle is nearly right - (DI) angle more rounded Lateral I -(MI) and (DI) angles are more round -MI is more acute than DI Both -mesial contacts on I 3rd - distal contacts on I 3rd more cervical |
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Maxillary incisors root
CI vs LI |
-CI root smallest of all teeth proportional to crown LI is longer relatively
-CI root as thick cervically MD FL -CI root no apical bend common -LI root commonly bent distally |
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Maxillary central vs Lateral Traits
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Central
-Deeper lingual crown concavity -root outline more curved on lingual than facial -lateral slightly shallow lingual crown concavity -more even root taper facially than lingually |
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Maxillary incisors Crest of contour
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for both this is found on the cervical 3rd faciolingually
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Maxillary central vs lateral incisal view
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-Central outline roughly triangular
-cingulum off center distally -incisal edge curves MD Lateral -crown more round or oval -cingulum centered -incisal edge straighter |
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Mandibular Central vs Lateral Lingual view
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central cant tell central R from L
-cingulum centered -same length M D marginal ridges Lateral -cingulum distal to center -longer mesial marginal ridge |
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Mandibular central vs lateral
labial view |
Central
-more symmetrical crown -min. D and M bulge -prox. contacts are on same level M D *smaller than lateral |
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Mandibular central and lateral Incisors crest of contour proximal view
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The labial crest of contour are in cervical 3rd for both type
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canine maxillary vs mand.
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Maxillary
-crown wider MD - cusp angle sharper/acute - M cusp ridge shorter than D - more pronounced labial ridge - more pointed root tip Mand. -crown narrower MD - cusp more blunt -M cusp ridge much shorter than D |
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canines max. vs mand prox contacts
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mesial max. incisal/mid. jxn
mand. incisal 3rd distal max. middle 3rd mand. incisal/mid jxn |
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canines
mand. vs max. lingual |
max.
-more prominent lingual anatomy -cingulum centered mand. -smoother lingual surface -cingulum centered or to distal |
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canine
max. vs mand. proximal |
max.
-more prominent cingulum - crest of contour (labial) less cervical/more pronounced Mand. -crest of curvature more vercial/ less pronounced - less prominent cingulum -cusp tip lingual to root axis line |
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canines
max. vs mand. cusp tip |
max.
-cusp tip usually labil to root axis line mand. -cusp tip centered or lingual to -root axis line |
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canine
max. vs mand. crest of curvature |
max.
- as with all of crest of curvature is in the cervical 3rd facially mand. -more cervical |
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canine
max. vs mand. incisal view |
max.
-less symmetry -centered faciolingually -centered cingulum Mand. -more symmetry -much greater FL than MD - cingulum distal |
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dentition formations
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primarys emerge 6-28(+/- 4) months
mixed dentition 6-12 yrs -perm emergence - pre molars 1st completed except 3rd molars by 14-15 yrs -3rds 18-25yrs |
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Four tooth tissue
Alveolar process alveolus |
cementum----hard tissue
dentin-----------hard tissue enamel---------hard tissue pulp- soft Alveolar process: portion of serving as support for tooth Alveolus: bone of the tooth socket |
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surface and ridges
labial buccal occlusal lingual facial |
labial: incisor and k9 surface towards lips
buccal- PM and molar surface facing cheek facial: buccal + labial lingual: all surfaces facing the tongue Occlusal: surface of premolar and molars that contacts those of opposite jaw. |
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line angle
point angle |
line angle: formed by jxn of 2 surfaces and is named after ea (labioincisal)
Point angle: formed by jxn of 3 surfaces and derives its name from all. ( mesio labio incisal) |
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incisor function
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-cut food
-enable articulate speech -support the lip / appearance -help guide mandible -posteriorly during cloing |
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incisor class traits
mamelons lobes |
mamelons: 3 rounded elevations on the incisal edge
lobes: 3 lobes (above) form facial surface -4th lingual love forms lingual bulge - cingulum |
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incisor facial view
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- widest mesiodistally at incisal edge
- narrowest in cervical 3rd * maxillary arc more convex on distal than mesial * mandibular arch symmetrical (facial view) (central mandibular) |
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incisor facial view
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- mesioincisal MI angle are more acute than DI angles
-contact areas: Mesial on incisal 3rd , D more cervical except mand. central -incisal edge slopes distally(before wear) - cervical line curves towards the apex in the middle of facial surface. |
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incisor lingual view
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incisor crown have more narrow L surface because M and O surfaces converge lingually toward the cingulum
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incisor incisal view
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-lingual fossa just incisally of cingulum
-marginal ridges converge toward cingulum -crown tapers from proximal contacts towards cingulum |
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incisor proximal views
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- wedge or triangle shaped
-facially more convex cervically when height of contour is greatest *lingual is the same* -lingual surface is S shaped convex over cingulum, concave towards incisal edge **concave portion is important guiding factor* |
