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Overview of the Permanent Posterior Teeth
This document lies an overview of the different dental anatomy of the permanent posterior teeth. This includes the ridges, pits, grooves, fissures, and much more.
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Permanent Posterior TeethAnatomical Features
Developmental Lobes Crown and Occlusal Surface
Premolars developfromhow many lobes the crown of each posteriortooth has an occlusal
4 5 lobes 3 buccal I 2lingual surface as its masticatory surface
molarshave howmanylobes what is the occlusalsurfacebordedwith
3 5lobes to the of cusps marginal ridges table
occlusal
Cusps and Cusp Ridges/Tips Cuspal Planes
ne occlusalsurface hashowmany cusps Betweenthesecuspridges aresloping are 4
may
2 ormore inclinedcuspalplanesforeachcusp
ow many cuspridges arethere wherearethey located Howaretheseplanesnamed
4cuspridgesdescendfromeachcusptip Bycombiningthenamesofthe 2 tritanne a
cuspridgesbetweenwhichthey
Ridges
Fossa
whataretriangularridges
cuspridgesthatdescendfromthe whatis thefossa
ofthe
cusptiptowardthecentralpart A shallow widedepressionon theocclusaltable
occlusaltable whatisthecentralfossa
triangular arenamedforthecuspstowhichtheybelong locatedattheconvergance ofthecusp
ridges
ridges
Howmanytriangularridgesarethere in acentralpoint
wherethe groovesmeet
ipercusp whatisthetriangulartossa
whataretransverseridges A v shapeddepressionattheconvergance ofthecuspridges
Joiningofatriangular
ridgescrossingtheocclusaltabletransversely associated w thetriangulargroovetermination
Exfrommesiolingualtomesio
Pits
buccal
whatareobliqueridges
Aridgethatdiagonallycrossestheocclusalsurface
Exdistobuccaltomesiolingual occlusal developmental pitsarelocatedwhere
Deepestparts ofthefossae
Grooves Eachpit is asharppinpointdepressionwhere2ormoregroovesmeet
whatare developmentongrooves Supplemental Grooves
sharpdeepvshapedlineardepressionsthatmarkthejunction
amongthedevelopmentallobes AKA secondarygrooves
whatisthecentralgroove shallowermoreirregularlineardepressionsthatbranchfrom
the
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