Dental Anatomy

Question 1

only tooth w/ pulp wider MD than FL

Answer 1

Max Cent Inc

Question 2

The permanent anterior tooth whose pulp chamber has the greatest faciolingual dimension

Answer 2

Max K9

Question 3

primary, secondary, tertiary dentin?

Answer 3

Primary: laid down during tooth formation, ends when root development is complete.

Secondary: Formed AFTER root formation and throughout life

Tertiary: Laid in response to trauma/injury (caries)

Question 4

Cervical Line

Answer 4

The cervical line of a tooth separates the anatomical crown and root

Question 5

Largest incisal/occlusal embrasure

Answer 5

Max lat inc & K9

Question 6

smallest incisal embrasure

Answer 6

btwn mand centrals

Question 7

Max Molar root size order

Answer 7

PALATAL root is largest and longest, followed in size by the MB root and the DB root

Question 8

Largest cusp of mand 1st molar

Answer 8

MB

Question 9

Smallest cusp of mand 1st molar

Answer 9

D

Question 10

Bennett movement
Bennett shift
Bennett angle

Answer 10

o Ben Movement: L & R condylar motion caused by lateral movement of mandible
o Ben shift: lateral movement of mandible towards the working side during lateral excursion
o Ben angle: the angle obtained after the non-working side condyle has moved anteriorly & medially. (the flatter the cusp, the greater the side shift

Question 11

of root canals in Max 2nd molar

Answer 11

1 root canal per root (3 total)

Question 12

of root canals in mand 1st molar

Answer 12

2 root canals in mesial root, 1 in distal root (3 total)

Question 13

of root canals in mand 2nd molar

Answer 13

2 root canals in mesial root, 1 in distal root (3 total)

Question 14

Location of height of contours?

Answer 14

the buccal and lingual heights of contours are located near the CERVICAL 3RD of all teeth
except: the lingual surface of posterior teeth (which is located in the MIDDLE 3rd)

Question 15

What is Gemination? and How does it occur?

Answer 15

gemination: a dental anomalies where there’s ONE crown, DOUBLE in width, ONE root, ONE pulp chamber.

Happens bc a tooth bud splits in 2

Question 16

Dens in dente is most commonly found within what tooth?

Answer 16

Max lateral incisors

Question 17

Tip of MB cusp of max 2nd molar opposes?

Answer 17

Buccal groove of mand 2nd molar

not the embrasure

Question 18

which PM is widest MD?

Answer 18

Max 1st PM

Question 19

Turner’s tooth?

Answer 19

Turner’s Tooth describes the situation where a permanent tooth erupts into the mouth with a HYPOCALCIFICATION spot due to insult from an ABSCESSED or TRAUMATIZED primary tooth.

Question 20

Dilaceration

Answer 20

Dilaceration is distortion of the root AND crown from their normally linear relationship.

• (Flexion- distortion of the ROOT portion ONLY)

Question 21

_____ contains copper

Answer 21

lysine oxidase

memorize

Question 22

why is elastin more elastic than collagen?

Answer 22

Elastin does not contain
hydroxylysine, which makes
it much more elastic than
collagen

Question 23

T3/T4. which one is more potent? which one is more abundant?

Answer 23

T3 more potent.

T4 more abundant

Question 24

____ is a cholesterol intermediate.

Answer 24

Squalene (memorize)

Question 25

what’s rifampicin’s mechanism of action?

Answer 25

inhibits RNA polymerase in bacteria (for TB)