Orthodontic I Test

0 votes, 0 avg

You will have 60 minutes to complete all the questions. After the timer reaches 60 minutes, the exam will end and be saved automatically. Good luck! *Fingers crossed*

The timer has been reached. The exam has now been terminated and saved.

Orthodontic I Test

1 / 60

The anchorage distributed to both upper and lower jaws is?

a. compound

b. intramaxillary

c. single

d. intermaxillary

2 / 60

It is the difference in size between the primary teeth and their permanent successor in the posterior segment:?

a. Posterior liability

b. Nance Leeway space

c. Posterior size discrepancy

d. Late mesial shift

3 / 60

Which of the following are principal growth sites of mandible? I. Posterior surface of ramus II. Condyle III. coronoid process IV. chin

a. II, III and IV

b. I, III and IV

c. I, II and III

d. II and IV

e. I, II, III and IV

4 / 60

A supraverted mandibular premolar with respect to Frankfurt horizontal plane is said to be in?

a. C. attraction

b. A. contraction

c. D. distraction

d. B. abstraction

5 / 60

The profile of a normal neonate is?

a. straight

b. convex

c. all are corrects

d. concave

6 / 60

Which among the following are anatomic landmarks? I. Na II. Pog III. Go IV. Kr

a. I, II, III and IV

b. II, III and IV

c. I, II and III

d. II and IV

7 / 60

Primate space is found between the:?

a. mandibular primary canine and lateral incisor

b. maxillary canine and lateral incisors

c. maxillary canine and first molar

d. none of the above

8 / 60

Spaces between the primary anteriors:?

a. primate space

b. interdental space

c. interdental space and primate space

d. nance leeway space

9 / 60

Class I permanent molar relationship can be achieved through the following, except?

a. None of the above.

b. Late mesial shift after the loss of second primary molar

c. Combination of both

d. Greater forward growth of the mandible than the maxilla

10 / 60

If the upper and lower incisors are labially inclined in relation with each other, it is related to what type profile?

a. convex

b. concave

c. straight

d. all are correct

11 / 60

Unilateral distoclusion with linguoversion of the maxillary central incisors is also known as:?

a. Class II div.

b. Class II Div. 2

c. Class II div. 2 subd

d. Class II Div. 1

12 / 60

Displacement of the mandible due to its growth at the condyle and posterior border of the ramus is?

a. cortical drift

b. secondary

c. primary

d. tertiary

13 / 60

A mesocephalic face has a/an____ dental arch form?

a. all are corrects

b. average

c. narrow

d. round

14 / 60

Force level declines steadily to zero between activations.?

a. interrupted

b. continuous

c. none of the above

d. intermittent

15 / 60

Why do we select patient that concern with FMPA angle when indicate with functional appliance ?

a. Concern with vertical growth

b. All are related

c. Concern with the overbite

d. Increase lower anterior face height

e. All unrelated

16 / 60

Clinical examination of intra-oral in the labial segment was checked and found ?

a. Incisor relationship

b. All are related

c. Overbite, Overjet

d. Centre line

e. Any displacement on closure

17 / 60

Appliance for treatment is:

a. Removable appliance

b. Functional appliance

c. Fixed appliance

d. All are related

18 / 60

The most anterior point of the bony chin ?

a. Ii Point

b. Me Point

c. Pog Point

d. All unrelated

e. B Point

19 / 60

Hawley retainer regime was placed after orthodontic treatment ?

a. Keep for stability

b. All are related

c. All unrelated

d. Wait for bone reorganize

e. To prevent the relapse

20 / 60

The conjunction of the fronto-nasal suture ?

a. Frontal

b. Basion

c. Sella

d. Nasion

e. Nasal

21 / 60

The malocclusion cause by thumb sucking

a. Anterior open bite

b. Retrocline of lower incisors

c. All are related

d. constricted the maxilla

e. Procline of upper incisors

22 / 60

Frankfort Horizontal is a reference plane constructed by joining which of the following landmarks?

a. Nasion and Sella

b. Porion and Sella

c. Basion and Orbitale

d. Porion and Nasion

e. Porion and Orbitale

23 / 60

The factor effect to the choice for teeth extraction when the space is required as follows ?

a. Teeth are poor prognosis

b. Teeth are well alignment without spacing

c. All are related

d. Teeth are well alignment with spacing

e. anchorage requirements is enough

24 / 60

The FMPA Angle was recognized and constructed by ?

a. Frankfort to maxillary plane

b. Frankfort to SN plane

c. Frankfort to mandibular plane

d. Frankfort to horizontal plane

e. Frankfort to occlusal plane

25 / 60

The retentive component of the URA ?

a. Clasp spring

b. T spring

c. All unrelated

d. Z spring

e. Ball clasp

26 / 60

What the anchorage for removable appliance ?

a. Screws expansion

b. Mini implants

c. All are related

d. Base plate

e. Springs

27 / 60

How can measure the overjet when intra-oral examination check ?

a. Use metal ruler

b. Use meter string

c. Use dividor

d. All urelated

e. All are related

28 / 60

The maxillary plane ( Mx ) was represented by a line drawn through from ?

a. ANS and PNS

b. All unrelated

c. ANS and Po

d. PNS and Or

e. PNS and Go

29 / 60

Which of the following conditions is usually present in a Class II, Division 2 malocclusion?

a. Mesiocclusion of permanent first molars

b. Unrelated

c. Open bite

d. Steep mandibular plane

e. Retroclination of maxillary central incisors

30 / 60

Which of the following conditions is usually present in a Class II, Division 2 malocclusion?

a. Lingual inclination of maxillary central incisors

b. Unrelated

c. Steep mandibular plane

d. Mesiocclusion of permanent first molars

e. Open bite

31 / 60

The Norms value of the Maxillary Mandibular plane angle (MMPA) ?

a. 27 ± 3 degree

b. 27 ± 2 degree

c. All unrelated

d. 27 ± 0 degree

e. 27 ± 1 degree

32 / 60

What a problem when permanent third molars are missing ?

a. When 7’s need to be extracted

b. Cause midline shift

c. Aestheitc

d. All unrelated

e. Difficult to eat

33 / 60

The lowermost point on the mandibular symphysis ?

a. Po Point

b. B Point

c. All unrelated

d. Me Point

e. Pog Point

34 / 60

Upper incisor inclination 140 degree mean that ?

a. Normal inclination

b. Unrelated

c. Proclined

d. Uprighting

e. Retroclined

35 / 60

Anterior teeth are most likely to be fractured in children with which of the following mixed dentition malocclusions?

a. There is no relation

b. Class I

c. Class III

d. Class II div 1

e. Class II div 2

36 / 60

Why need posterior bite plane in removable appliance ?

a. All unrelated

b. To release the occlusal interference

c. To control the anchorage

d. To obstruct the buccal segment teeth to erupt.

e. To reduce the overbite

37 / 60

Anomalies in position of teeth is:

a. Impaction

b. Ectopic

c. All are related

d. Transposition

38 / 60

What are the components for functional appliance ?

a. All are related

b. Shields

c. Extra-components

d. Working bite

e. Bite-planes

39 / 60

How many types of growth rotation ?

a. 5 types

b. 4 types

c. All unrelated

d. 3 types

e. 2 types

40 / 60

What is the optimum force ( g ) for root uprighting ?

a. All unrelated

b. 50g – 130g

c. 50g – 140g

d. 50g – 120g

e. 50g – 100g

41 / 60

The factors determining of the anchorage value ?

a. Space available

b. Pressure distribution in the periodontal ligament

c. Force magnitude

d. Root morphology

e. All are related

42 / 60

The Norms of the lower central incisor to APog line ( L1-APog ) ?

a. 5 ± 1 mm

b. 5 ± 3 mm

c. 5 ± 5 mm

d. 5 ± 2 mm

e. 5 ± 4 mm

43 / 60

What’s function of labial bow ( Active ) when apply the force to anterior teeth ?

a. To keep in position of anterior teeth

b. To retract anterior teeth

c. To intrude the anterior teeth

d. Unrelated

e. To procline anterior teeth

44 / 60

The use of Cephalometric radiograph in Diagnosis of ?

a. Dental factors

b. Skeletal pattern

c. All are related

d. Soft tissue

e. Dental base length

45 / 60

Anchorage is the resistance to reactive forces generated by ?

a. The contact between the baseplate and the palate

b. Active components of the appliance

c. All unrelated

d. Placements of clasps or bows on teeth

e. Retentive components of the appliance

46 / 60

What are active components for removable appliance ?

a. Achorage components

b. Base plate

c. All are related

d. Active components

e. Retentive components

47 / 60

Examination and Diagnosis in family and social history related to ?

a. Can they come regurlary

b. How far they live

c. All are related

d. Do they understandwhat orthodontic treatment involves

e. Hereditary factor

48 / 60

The high risk of upper central incisor trauma when ?

a. Overjet < 9mm

b. Overjet > 9mm

c. sometime great, sometime less

d. Overjet = 9mm

e. Unrelated

49 / 60

The Molar relationship class II was known as the mesio-buccal cusp of the upper first permanent molar occlude to the lower first permanent molar at ?

a. Unrelated

b. The distal-buccal groove

c. The distal of mesio-buccal groove

d. The mesio-buccal groove

e. The mesial of mesio-buccal groove

50 / 60

The lower anterior facial height is a line that is perpendicular to ?

a. The Maxillary plane from the Me Point

b. The Maxillary plane from the chin

c. All unrelated

d. The Maxillary plane from the B Point

e. The Maxillary plane from the Pog Point

51 / 60

In cephalometric analysis of children with malocclusion, the angle ANB is frequently used. In patients with severe Class II malocclusion, this angle is ?

a. Greater than the Norm

b. Sometimes greater, sometimes less

c. Unrelated

d. Less than the Norm

e. Normal

52 / 60

What function for Buccal canine retractor ?

a. To move a buccally erupted canine palatally and buccally

b. To move a buccally erupted canine palatally and labially

c. To move a buccally erupted canine palatally and mesially

d. To move a buccally erupted canine palatally and distally

e. All unrelated

53 / 60

What should to do of the stage treatment when finish stage 1 ( functional appliance ) and start the stage 2 ( fixed appliance ) ?

a. Reassess anchorage and extraction requirements to prior to fixed appliance

b. Wear retainer and wait until the patient stop growing

c. All are related

d. All unrelated

e. Bonding the brackets in both arches

54 / 60

What diagnosis will be found when the lateral cephalometric tracing was finished ?

a. Dental factors

b. Soft tissue

c. Dental base length

d. All are related

e. Skeletal pattern

55 / 60

What is the flush terminal plane ?

a. When the distal surface of upper and lower first permanent molars are in the line each other

b. All unrelated

c. When the distal surface of upper and lower second deciduous molars are in the line each other

d. When the distal surface of upper and lower second permanent molars are in the line each other

e. When the distal surface of upper and lower first deciduous molars are in the line each other

56 / 60

How to minimize anchorage loss for the tooth movement ?

a. Use force as light as possible

b. All unrelated

c. All are related

d. Move minimum number of teeth at one time

e. Increase the resistance of anchor teeth

57 / 60

Which teeth apexes are suitable for removable appliance ?

a. The teeth apexes are displaced

b. All unrelated

c. The apexes are not diplaced

d. All are related

e. The apexes are resorbed

58 / 60

Which one is the right answer for the canine classification ?

a. Canine class I

b. Canine class II

c. Canine class III

d. All are related

e. Canine ½ unit class II

59 / 60

The highest point on the bony external auditory meatus ?

a. Ba Point

b. All unrelated

c. S Point

d. Po Point

e. Or Point

60 / 60

The use of lateral Cephalometric radiograph in diagnosis for focusing on the skeletal pattern in dimension view ?

a. Unrelated

b. All are related

c. Transverse

d. In-out

e. Antero-posterior

Your score is

The average score is 0%

Any comments?

Any problems/errors or mistakes found while testing, please let us know for modification!

និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត