First molar

Question 1

1.

Answer 1

permanent first molars are largest of all teeth

Question 2

2.

Answer 2

upper has occlusal surface arranged as for cusps - two buccal + two palatally

Question 3

3.

Answer 3

fifth palatal cusp of uppers may develop as the cusp of carabelli

Question 4

4.

Answer 4

lower has five cusps - three buccal, two lingual

Question 5

5.

Answer 5

mesial + distal edges are raised as marginal ridges

Question 6

6.

Answer 6

uppers have three roots arranged as tripod - large palatal, shorter mesiobuccal + distobuccal - apices of latter two are sometimes curved distally

Question 7

7.

Answer 7

lowers have two roots arranged as mesial + distal - apices sometimes curved distally

Question 8

8.

Answer 8

junction of the roots beneath the crown is called furcation area + can be a harbour for microorganisms when periodontal disease is present

Question 9

9.

Answer 9

function is to grind + masticate food chunks so that they can be swallowed

Question 10

10.

Answer 10

root apices of uppers can lie close to or penetrate flow of maxillary antrum