Molars
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
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 I 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
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 LR DBR MBR ROOT TRUNK CL BDG MBC MLC
Buccal Aspect
Lingualaspect DBR MBR LR CL LDG FC LC DLC
LingualAspect
Mesialaspect MBR -LR ROOT TRUNK CR MCA FC MLC MBC MMR
MesialAspect
Distal Aspest LR DBR MBR CL DCA BDG DLC DBC DMR
Distal Aspest
Occlusal Aspect. CP BG BGCF TGOR E8且 CGCF DOG FCG L⑤ 8
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 han distal surface 4) occlusal surface: more oblique than the first molar. No clear oblique ride 5 root: less bifurcation
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 Figure 11-19. Maxillary left second molar, buccal aspect
Buccal surface