2nd dental lec upper 7&8

The crown of upper 7 is narrower and shorter than upper6

• true
• False

the type of convergence that the upper 7 has

• distobucccal
• distolingual
• lingual
• mesiobuccal

The rhomboidal occlusal outline of upper 6 is more accentuated than upper 7

• true
• False

the occlusal outline of upper 7 three cusp type is ..... shaped

• heart shaped
• trapezoid with short side cervically
• trapezoid with short side oclussaly
• rhomboidal

the occlusal outline of upper 7 four cusp type is

• heart shaped
• trapezoid with short side cervically
• trapezoid with short side oclussaly
• rhomboidal

the cusp that can be missing from upper 7 is

• ml
• dl
• db
• mb

the roots of upper 7 are less divergent, closer, parallel and slightly longer than that of upper 6

• true
• False

the longest root of upper 7 is

• palatal root
• mesiobuccal
• distobuccal

the proximal surfaces of upper 7 are ........ shaped

• heart
• rhomboidal
• trapezoid with short side cervically
• trapezoid with short side occlusally

arrange the upper molars according to number of supplemental grooves

• upper6>upper8>upper7
• upper8>upper6>upper7
• upper8>upper7>upper6
• upper7>upper6>upper8