Molars
Have large crowns with 4-5
well-formed cusps.Mult-roots
First molar,erupt at 6 years old
Second molar,erupt at 12 years old
Third molar,wisdom teeth
Maxillary First Molar
1 The largest tooth in the maxillary arch,
2 The crown is wider buccolingually than
mesiodistally,
3 four well-developmental cusps,one
supplemental cusp called cusp of Carabelli,
4 three roots,
Buccal Aspect
LingualAspect
MesialAspect
Distal Aspest
Occlusal Aspect,
Maxillary Second Molar
Smaller than the first molar
1） buccal surface:distal buccal cusp more
smaller than mesial buccal cusp,
2） lingual surface:mesial lingual cusp is
very large,Lack of Carabelle cusp,
3） proximal surface:mesial surface is larger
than distal surface,
4） occlusal surface:more oblique than the
first molar.No clear oblique rigde,
5） root,less bifurcation,
Buccal surface
Lingual surface
Mesial surface
Diatal surface
Occlusal surface
Root
Mandibular First Molar
The largest of the madibular teeth,
Buccal surface
Lingual surface
Mesial surface
Distal surface
Occlusal surface
root
Mandibular Second Molar
Buccal surface
Lingual surface
Mesial surface
Distal surface
Occlusal surface
root
Thank you,
good bye!