Molars Summary PDF

Max 1st Molar Max 2nd Molar Max 3rd Molar Mand 1st Molar Mand 2nd Molar Mand 3rd Molar Details ~same/smaller than max 1st molar Smallest max molar Largest of mand molars, wider M-D than B-L ~smaller than mand 1st molar More symmetrical shape Smallest mand molar 3 roots - 1 L, 2 B 3 roots...

Max 1st Molar Max 2nd Molar Max 3rd Molar Mand 1st Molar Mand 2nd Molar Mand 3rd Molar Details ~same/smaller than max 1st molar Smallest max molar Largest of mand molars, wider M-D than B-L ~smaller than mand 1st molar More symmetrical shape Smallest mand molar 3 roots - 1 L, 2 B 3 roots - 1 L, 2 B 3 roots - 1 L, 2 B - roots tend to fuse, proximally 2 roots - prominent and broad 2 roots - prominent and broad, shorter 2 roots - prominent and broad, short 4 main cusps + Cusp of Carabelli 4 main cusps 3 main cusps 5 cusps - 3 buccal, 2 lingual - MB, DB, D, ML, DL 4 cusps, no distal cusp - 2 buccal, 2 lingual Often 4 cusps Cusp of Carabelli on ML line angle - non-functioning no Cusp of Carabelli Missing DL cusp --> heart-shaped tooth Distal cusp is ~accessory Missing accessory distal cusp Missing distal cusp Ovoid shape 4 pits 4 pits, sometimes 3 3 pits (central, mesial, distal) 3 pits (central, mesial, distal) 4 fossae 2 major (central + distal) 2 minor (mesial triangular, distal triangular) 4 fossae 2 major (central + distal) 2 minor (mesial triangular, distal triangular) 3 fossae central mesial distal 3 fossae central mesial distal Pit-groove pattern variable More supplemental grooves 4 Grooves: mesial buccal distal buccal distal lingual Largest of max molars 5 Grooves: buccal transverse ridge of oblique distal oblique lingual central Pit-Groove pattern very variable Many supplemental grooves 3 Grooves: buccal central lingual Pit-Groove pattern very irregular Many supplemental grooves still sort of has plus sign "+" meet in a plus sign " + " MB cusp tends to jet out the most ML cusp: 2 triangular ridges ML cusp: 2 triangular ridges Buccal cusps ~similar in size Distal cusps smaller compared to mesial cusps, especially DL ML cusp (huge) > DL cusp ML cusp > DL cusp 2 Transverse Ridges - MB --> ML - DB --> DL 2 Transverse Ridges - MB --> ML - DB --> DL 2 Transverse Ridges - MB --> ML - DB --> DL Transverse ridge: ML --> MB Transverse ridge: ML --> MB Oblique ridge: ML --> DB Oblique ridge: ML --> DB Absent/non-distinct oblique ridge No oblique ridge No oblique ridge No oblique ridge Buccal groove extends ~1/2 onto buccal suface Smooth ML line angle Distinct distal root curvature Distal Outline - rounded, appears shorter BL Distal Outline - rounded, appears shorter BL Distal Outline - rounded, appears shorter BL Mesial Outline - straighter, appears longer BL Mesial Outline - straighter, appears longer BL Mesial Outline - straighter, appears longer BL Lingual groove extends ~1/2 onto lingual surface Prominent Buccal Groove