Class notes
Permanent Maxillary Premolars
This document provides insight into permanent maxillary premolars. it describes the differences in the sizes, cusps, ridges, grooves, and much more.
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Permanent Maxillary PremolarsGeneral Features
which is largerthe 1st or2nd premolar crownis shorterthan acanine butslightlylongerthan
the first premolar a molar
crownis centered overtheroot Hexagonalfromocclusalview It
whichwidthis larger Bu or MD 2 cusps ofalmostequalsize
BL Howmany developmental lobes
roots are thesamelengthasmolars 3Buccal I lingual
Maxillary 1st Premolars
whenistootheruption they eruptdistalto primarycanine
1011years what isthecrowntorootratio
whenis rootcompletion
1213years Has a itdefinedcusps
Howmanycuspsarethere Is thebuccalcusporlingualcusplarger
2cusps Bar cuspis 1mmhigherthanlingual
whereis themesial distalcontactarea Has arootsusually Bar
memiddleofcrown
Lingual
moreocclusal
Buccal
crown centered over root
prominentverticalbuccalridge Is the lingual view smaller or largerthan
similar to the labialridgeofcanines
Has adevelopmentaldepressions smaller m surfaces visible
widest MDcompared towhat Both cusps are visible
comparedto all premolars wheredoes the Lcuspoffsetto
mesial distalcontacts cervical tothe toward the mesial
junctionofocclusal middle3rd Isthemesialordistalcuspslopelongershorter CLview
IL perikymataextendwhichway M shorter D longer
Mesial
mesiodistally
thecescurvaturehaslessdepth
the cuspis pointed iswhattothe longaxis
slightly Bothcuspsvisiblethe Lis 1mmshorterthanB
whichslopeis longer which isshorter CETcurvature is relatively straight
m longer than mmarginalgroovecrosses the marginal
onlythebuccalrootis visible ridge extends to depression from crown
tobifurcation
Distal whatisthe m development depression
Located cervicalto the contact
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