Orthodontics

Question 1

Which one is the most normal bite relationship?

a: neutroclusion (CL I)
b. distoclusion (CL II)
c. mesioclusion (CL III)

Answer 1

a

Question 2

Tooth position can be classified as following:
mesio-version
disto-version 
labio/bucco-version
linguo-version
infra-version
supra-version
torso-version
trans-version

Answer 2

mesio : more mesial 
distal : more distal
labio: more toward cheek or lip
linguo: toward tongue
infra : more toward into bone or less erupted   
supra : more erupted 
torso: rotated axis 
trans: wrong order

Question 3

Term used to describe wrong place tooth eruption

Answer 3

ectopic eruption

Question 4

Term describes a conditions present from a birth

Answer 4

congenital

Question 5

Term describes more number of teeth than normal

Answer 5

supernumerary

Question 6

Horizontal space overlap between upper and lower anterior teeth

Answer 6

Over-jet

Question 7

vertical space overlap between upper and lower front teeth.

Answer 7

Over-bite

Question 8

Term describe anterior front teeth touching tip of teeth.

a. cross bite
b. open bite
c. end to end bite

Answer 8

c

Question 9

Characteristics of preventive orthodontics

Answer 9

1. preserve normal developing occlusion
2. correction of caries condition
3. elimination of had habits
4. space maintaining for missing teeth

Question 10

characteristics of corrective orthodontics

Answer 10

1. reduce / eliminate malocclusion

2. intral/extraoral appliance

Question 11

Following are the tooth movement forces :
Rotation
Translation
Tipping 
Intrusion
Extrusion
Torque

Answer 11

rotation: tooth movement around axis
translation: tooth body movement
tipping: tooth upright direction
intrusion: into the bone
extrusion: above bone
torque: root movement without crown movement

Question 12

It is bonding procedure to place bracket on the tooth using tray

a. direct bonding
b. indirect bonding
c. clear tray

Answer 12

b

Question 13

Which are not part of orthodontic records?

a. photo
b. impression
c. radiograph
d. medical/dental history
e. clinical exam
f. none of above

Answer 13

f

Question 14

What is the radiograph to measure skeletal growth?

a. panoramic
b. cephalometric
c. periapical

Answer 14

b

Question 15

A stainless steel ring cemented around a tooth

Answer 15

bands

Question 16

a device attached to teeth to allow movement of teeth

Answer 16

bracket

Question 17

rubber ring placed between teeth to separate teeth before band placement

Answer 17

separators

Question 18

It is a titanium screw anchored into bone to provide anchorage to move teeth

Answer 18

TAD (temporary anchoring Device)

Question 19

which is the traction device to retract teeth parallel position?

a. cervical device
b. high-pull device
c. facebow

Answer 19

a.

Question 20

removable acrylic and wire appliance to retain the teeth

a. clear retainer
b. lingual retainer
c. hawley retainer

Answer 20

c

Question 21

Procedure to splint lower front teeth to retain the teeth position

a. lingual retainer
b. fixed retainer
c. palatal expander

Answer 21

a

Question 22

Which one is used to bend and shape wires?

a. band remover plier
b. bird beak pliers
c. howe pliers

Answer 22

b.