MCQ orthodontic Mey phoung 6

The soft tissue effect in functional appliance used ?

The indication for functional appliance , what is ideal patient ?

Growing patient with the angle of FMPA increase

Growing patient with anterior open bite

Growing patient with average or FMPA decrease

All are related

All unrelated

The working bite of the bite registration to advance the mandible

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

Wear retainer and wait until the patient stop growing

Bonding the brackets in both arches

Reassess anchorage and extraction requirements to prior to fixed appliance

All are related

All unrelate

Which options to reduce relapse of the transition from functional to fixed ?

Night time wear of functional appliance 2 or 3 months

Class II elastic as soon as possible

Removable appliance that clips over fixed appliance

σ� All are related

All unrelated

When the overjet increase more than 9 mm increased risk incisors trauma ?

The patient compliance when wearing functional appliance, the ideally should be?

Hen should the patient take off the functional appliance ?

What is the advantage of functional appliance ?

Reduce time of treatment in fixed appliance

Reduce anchorage requirements in fixed appliance

Reduce large overjets and Improving class II buccal segments in growing patients

All are related

All unrelated

The change in the proportion of head and face during growth of the maxilla ?

For every 1 mm for posterior arch expansion can get approximately

What type of x-ray could check for notch in interdental bone between #11 and #21 ?

Which one is the right answer for the canine classification ?

Leeway space is

More in mandible than in maxilla

σ� Both are equal

Unrelated

Supernumerary teeth are give rise to

Delayed eruption of teeth

σ� Malocclusion

Dentigerous cyst

All are related

Orthodontic treatment can improve:

The appearance

Mastication

Speed

All are related

The main reasons for doing orthodontic treatment:

σ� 3

σ� 4

σ� 5

σ� 6

Orthodontic treatment options:

σ� 3 options

4 options

5 option

6 options

Root formation is normally completed after eruption in year:

2-3 years

2-4 years

2-5 years

2-6 years

Classification of malocclusion:

σ� 2 classifications

3 classifications

4 classifications

5 classifications

Flat occlusal plan:

Curve of spee ≤ 1 mm

Curve of spee ≤ 1.5 mm

Curve of spee ≤ 2 mm

Curve of spee ≤ 2.5 mm

Flush terminal plane is at:

Labial of Es

Lingual of E

Distal of Es

Mesial of Es

Appliance for treatment is

σ� Removable appliance

Functional appliance

Fixed appliance

All are related

Anomalies in position of teeth is:

Ectopic

Transposition

Impaction

σ� All are related

The permanent incisors develop to the roots of the deciduous incisors of face:

Labial

Distal

Lingual

Mesial

Other causes of median diastema could be due to:

Large fibrous

Missing or small lateral incisor

Generalised spacing

All are related

Normal occlusion is:

Molars relationship: class I ( Angle classification )

Incisors relationship: class I ( British standards incisor [BSI] classification

No rotation

All are related

Anodontia :

Failure in the development of one tooth

Failure to develop all teeth

Tooth impaction

Tooth rotation

Two treatment options in missing #12 :

Extraction #63 then replace missing tooth

Use removable appliance for closing space

Reopen the space then replace missing tooth and close the space

Use fix appliance open space

Mesiodens :

Found in canine location

Found in buccal segment

Found next to wisdom toot

Found in the midline

4. Balancing extraction :

Is the removable of the contralateral tooth

Is the removable of wisdom tooth

Is the removable of the equivalent opposing tooth

Is the removable of periapical infection of upper central incisor

The prognosis for successful alignment of a palatally impacted upper canine :

Incisor root should be parallel to lateral root

Long axis of upper canine to mid-sagittal plane should be 90°

Root space of canine should be distal to second premolar

Upper canine should overlap not more than the mesial aspect of lateral root and not higher than apical third of the root of lateral

Malocclusion cause by thumb sucking

Minus overjet

Retroclined upper incisors teeth

Upper arch narrowed, unilateral crossbite in posterior segment

Overbite is deep and complete

Effective of tongue thrust :

Both buccal segment crowding

Most of anterior crowding

Reduction of overbite or anterior open bite

Increase overbite and complete

Flush terminal plane

Is the line of the mid of the face

σ� Is the line of occlusal plane

Is the line from Mesio-buccal cusp of first molar to canine tip

σ� Is the distal surface of upper E and lower E usually end in line with each

Ectopic position

Position of tooth away from normal

Position of tooth supra-occlusa

Position of tooth transposition

Position of tooth impaction close to lingual nerf

Treatment of large upper labial fraenum

Close median diastema and frenectomy

Use removable appliance for bodily movement of upper central incisors

Closing space in ugly ducking stage

Closing space by veneer

Lower inclined plane :

Cemented to correct anterior crossbite

σ� Cemented to correct posterior crossbite

Removable appliance for correcting posterior crossbite

Fix appliance for correcting anterior crossbite

Neural growth :

Is determined by growth of the brain and calvarium

Is determined by growth rotation of mandible

Is determined by growth downward and forward of maxillary

Is determined by growth of naso-maxillary comple

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

What is the meaning of Cephalometric ?

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

MCQ orthodontic Mey phoung 6

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