Maxillary and Mandibular First & Second Premolars

(buccal max. first premolar #5)

Buccal ridge

Identify the landmark on this right tooth

(buccal max. first premolar #5)

Blue- distal slope

Red- buccal cusp

Yellow- mesial slope

Identify the landmarks on this right tooth

(buccal max. first premolar #5)

developmental lines

identify the landmark on this right tooth

(lingual max. first premolar #5)

red- lingual cusp

blue- cervical line

identify the landmarks on this right tooth

(lingual max. first premolar #5)

red- buccal cusp

green- lingual cusp

identify the landmarks on this right tooth

(occlusal max. first premolar #5)

blue- distal marginal ridge

black- mesial marginal ridge

identify the landmarks on this right tooth

(occlusal max. first premolar #5)

yellow- distobuccal groove

red- central groove

green- mesiobuccal groove

blue- mesial marginal groove

identify the landmarks on this right tooth

(occlusal max. first premolar #5)

red- distal fossa and pit

black- mesial fossa and pit

identify the landmarks on this right tooth

buccal of maxillary second premolar #4

identify this right tooth

buccal of maxillary first premolar #5

identify this right tooth

lingual of max second premolar #4

identify this right tooth

lingual of max first premolar #5

identify this right tooth

occlusal of max second premolar #4

identify this right tooth

occlusal of max first premolar #5

identify this right tooth

(occlusal of max first premolar #5)

blue- buccal triangular ridge

black- lingual triangular ridge

red- transverse ridge

identify the landmarks on this right tooth

(proximal of max first premolar #5)

red- root concavity

green- mesial concavity

blue- mesial marginal groove

yellow- buccal height of contour

black- lingual height of contour

identify the landmarks on this right tooth

(buccal of mand. first premolar #28)

green- buccal ridge

yellow- distal slope

blue- buccal cusp

red- mesial slope

identify the landmarks on this right tooth

(lingual of mand. first premolar #28)

blue- lingual cusp

yellow- mesiolingual groove

identify the landmarks on this right tooth

(proximal of mand. first premolar #28)

green- buccal height of contour

red- cervical line

blue- root concavity

black- mesiolingual groove

yellow- lingual height of contour

identify the landmarks on this right tooth

(occlusal of mand. first premolar #28)

yellow- mesiobuccal groove

black- mesiolingual groove

green- central groove

purple- buccal triangular ridge

orange- lingual triangular ridge

pink- transverse ridge

blue- distobuccal groove

red- lingual cusp

identify the landmarks on this right tooth

(buccal of mand. second premolar #29)

blue- distal slope

green- buccal cusp

yellow- mesial slope

red- buccal ridge

identify the landmarks on this right tooth

(lingual of mand. second premolar #29)

red- mesiolingual cusp

blue- lingual groove

green- distolingual cusp

identify the landmarks on this right tooth

(proximal of mand. second premolar #29)

red- buccal height of contour

green- lingual height of contour

identify the landmarks on this right tooth

(occlusal of mand. second premolar #29)

red- distolingual triangular ridge

yellow- buccal triangular ridge

green- mesiolingual triangular ridge

blue- distobuccal groove

purple- central groove

black- mesiobuccal groove

orange- lingual groove

identify the landmarks on this right tooth

(occlusal of mand. first premolar #28)

red- mesial marginal ridge

yellow- buccal cusp

blue- distal marginal ridge

green- mesial fossa and pit

black- distal fossa and pit

identify the landmarks on this right tooth

(occlusal of mand. second premolar #29)

blue- buccal cusp

green- distolingual cusp

pink- distal pit and fossa

yellow- central pit and fossa

black- mesial pit and fossa

red- mesiolingual cusp

identify the landmarks on this right tooth

buccal of mand. first premolar #28

identify this right tooth

lingual of mand. first premolar #28

identify this right tooth

occlusal of mand. first premolar #28

identify this right tooth

buccal of mand. second premolar #20

identify this left tooth

lingual of mand. second premolar #20

identify this left tooth

occlusal of mand. second premolar #20

identify this left tooth

occlusal of mand. second premolar #29

identify this right tooth

pit

Name the landmark that is located within the fossa on the occlusal surface of maxillary premolars.

true

true or false

The maxillary first premolar has a more prominent buccal ridge than that of the maxillary second premolar.

Mesial and distal marginal ridges

Name the two ridges that form the boundaries of the occlusal surface

transverse ridge

Name the ridge that includes the buccal and lingual triangular ridges.

mesial marginal groove

Name the groove that passes over the marginal ridge on one of the premolars.

false

true or false

Maxillary first premolars erupt before maxillary first molars

central groove

Name the groove that divides the occlusal surface into the buccal and lingual half.

FALSE; maxillary first premolar may be bifurcated

true or false

All maxillary premolars are bifurcated.

FALSE; maxillary first premolar has a concavity on the crown of the mesial surface

true or false

The maxillary second premolar has a concavity on the crown of the mesial surface

FALSE; first max premolar has sharper buccal cusp

true or false

The maxillary second premolar has a sharper buccal cusp compared to the maxillary first premolar.

-buccal

-mesiolingual

-distolingual

name the cusps present on a three cusp mandibular second molar

true

true or false

the buccal cusp is taller than the lingual cusp on the mandibular first premolar

FALSE; only the mand. 2nd may have 3

true or false

all mandibular premolars have three fossas present on the occlusal surface

true

true or false

the mandibular second premolar occlusal surface is more symmetrical than the mandibular first premolar

true

true or false

the mandibular second premolar may have three triangular ridges on the occlusal surface