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Orthodontics Practice

5 MCQs • Practice Free attempt

Practice Test

Orthodontics — 5 Questions

1
Orthodontics
Slow progression in molar uprighting in an adult patient is due to
1) Occlusion not being relieved
2) Overcontoured spring
3) Back of anchorage control
4) All of the above

📝 Explanation:

Slow progression in molar uprighting can occur if the occlusion is not adequately relieved. If the opposing teeth are still in contact, it can hinder the movement of the molar being uprighted.

2
Orthodontics
The main disadvantage of uprighting first molar with a loop lingual arch is
1) Extrusion of molars
2) Overcorrection of molars
3) Flaring of mandibular incisors
4) All of the above

📝 Explanation:

One of the main disadvantages of using a loop lingual arch to upright the first molar is that it can lead to flaring of the mandibular incisors due to the forces applied.

3
Orthodontics
The wire which is most suitable for making final tooth adjustments
1) Nitinol
2) Stainless steel
3) Gold
4) Beta titanium

📝 Explanation:

Beta titanium wire is most suitable for final tooth adjustments due to its low modulus of elasticity, allowing precise and gentle force application.

4
Orthodontics
Oral screen
1) Causes the child to breathe through the nose
2) Allows for the passage of air through mouth
3) Prevents passage of air through nares
4) Allows the passage of air through mouth & nose

📝 Explanation:

An oral screen is designed to encourage nasal breathing by blocking oral airflow and redirecting it through the nose.

5
Orthodontics
The main aim of Frankel appliance is to influence
1) Function of tongue
2) Temperomandibular joint
3) Outer neuromuscular envelop
4) Control of vertical dimension

📝 Explanation:

The primary aim of the Frankel appliance is to influence the outer neuromuscular envelope, promoting proper muscle function and jaw positioning.

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