Orthodontic

Orthodontic Knowledge Quiz
Test your understanding of orthodontic principles with our comprehensive quiz. Whether you’re a student, a practicing orthodontist, or just someone interested in learning more about orthodontics, this quiz will challenge and enhance your knowledge.
Key Features:
- Focus on various orthodontic principles and components.
- Multiple choice questions covering a broad range of topics.
- Learn and evaluate your understanding of optimal forces in orthodontic treatments.
61. The various types of retentive components ?
σ� Adams clasp and southend clasp
σ� Adams clasp and clasp spring
σ� Adams clasp and buccal canine retractor
σ� Adams clasp and palatal spring
σ� All unrelated
62. Anchorage is the resistance to reactive forces generated by ?
σ� Active components of the appliance
σ� Retentive components of the appliance
σ� The contact between the baseplate and the palate
σ� Placements of clasps or bows on teeth
σ� All unrelated
How to preserve the anchorage for removable appliance ?
σ� Contact the baseplate with other teeth not being moved
σ� Placements of clasps or bows on teeth which are not being moved
σ� Placements of clasps or bows on teeth which are not being moved
σ� All are related
σ� All unrelated
What is the optimum force for tipping movement ( profit-2000 ) ?
σ� 15 - 60 (g)
σ� 25 - 60 (g)
σ� 35 – 60 (g)
σ� 45 – 60 (g)
σ� All unrelated
65. What is the optimum force for bodily movement ( profit-2000 ) ?
σ� 50 - 100 (g)
σ� 60 – 100 (g)
σ� 60 – 120 (g)
σ� 70 – 120 (g)
σ� All unrelated
66. What function of the baseplate for removable appliance ?
σ� Prevent unwanted drift of the teeth
σ� Supports the wire and screw
σ� Contributes the anchorage
σ� protect palatal spring
σ� All are related
How can design and planed the teeth movement for removable appliance ?
σ� Planed which tooth/ teeth that need to be moved
σ� Planed the number of appliances that are needed
σ� select the wires are suitable for the appliance
σ� All are related
σ� All unrelated
What is the optimum force for root uprighting ( profit-2000 ) ?
σ� 10 - 20 (g)
σ� 35 – 60 (g)
σ� 50 – 100 (g
σ� 70 – 120 (g)
σ� All unrelated
69. What is the optimum force for intrusion ( profit-2000 ) ?
σ� 5 – 10 (g)
σ� 10 – 20 (g)
σ� 20 - 30 (g)
σ� 30 – 40 (g)
σ� All unrelated
70. The optimum force ( 35g – 60g ) to apply for teeth movement ( profit-2000 ) ?
σ� Tipping
σ� Extrusion
σ� Rotation
σ� All are related
σ� All unrelated
71. Delayed for extraction of deciduous teeth may lead to ?
σ� Malocclusion
σ� Crowding
σ� Impacted permanent teeth
σ� Permanent teeth are not in the arch
σ� All are related
72. Early extraction of the all second deciduous molars may lead to ?
σ� Upper and lower midline shift
σ� Upper 1st permanent molar tendency mesially movement
σ� All 1st permanent molars tendency mesially movement
σ� Upper and lower midline coincidence
σ� All unrelated
Why the removable appliance was used in mixed with fixed appliance?
σ� Upper or lower can not treated with fixed appliance
σ� May need to reinforce of anchorage
σ� May loose the brases in the upper or lower ach
σ� Easy to improve oral hygiene in the mouth
σ� All are related
74. When need to extract the 1st permanent molars with poor prognosis before orthodontic treatment?
σ� 1st molars were pain
σ� When 2nd molars erupting with bifurcation
σ� When the 3rd molars were absent
σ� When carie develop to the dentine
σ� All unrelated
75. Early lost of the 1st permanent molars may lead to ?
σ� Bone resorption
σ� Second premolars tipping distally
σ� Extrude the upper or lower permanent molars in antagonist
σ� Spacing in the arch
σ� All are related
76. The components for removable appliance ?
σ� Active components
σ� Retentive components
σ� Anchorage
σ� Base plate
σ� ARAB
77. The active components in removable appliance ?
σ� Adams clasp
σ� Clasp spring
σ� Clasp
σ� Ball clasp
σ� All unrelated
78. The retentive component of the URA ?
σ� Clasp spring
σ� Ball clasp
σ� T spring
σ� Z spring
σ� All unrelated
79. What the anchorage for removable appliance ?
σ� Base plate
σ� Springs
σ� Screws expansion
σ� Mini implants
σ� All are related
What are the following active components in removable appliance that effect to correct distally inclined canine ?
σ� Buccal canine retractor
σ� Robert retractor
σ� Distal movement by headgear
σ� Class I traction
σ� All unrelated
How can to calculate the space for teeth alignment when the arch and teeth tendency to crowding ?
σ� Use divider
σ� Ruler
σ� Tanaka and John stone technique
σ� All are related
σ� Unrelated
Upper incisor inclination 140 degree mean that ?
σ� Normal inclination
σ� Retroclined
σ� Proclined
σ� Uprighting
σ� Unrelated
Class I incisor relationship mean that ?
σ� Lower incisor proclined
σ� Lower incisor retroclined
σ� Lower incisor normal
σ� All are related
σ� Unrelated
Class II division 1 incisor relationship mean that ?
σ� Lower incisor normal
σ� Lower incisor proclined
σ� Lower incisor retroclined
σ� All are related
σ� Unrelated
85. Class III incisor relationship mean that ?
σ� Upper incisor retroclined
σ� Upper incisor proclined
σ� Upper incisor uprighting
σ� All are related
σ� Unrelated
86. How can to expose canine when it’s impacted?
σ� Close exposed
σ� Open exposed
σ� Gold chain
σ� All are related
σ� Unrelated
Canine impacted when the position in?
σ� Palatally
σ� Buccally
σ� In the arch
σ� All are related
σ� Unrelated
88. Gold chain are usually used when the ?
σ� Permanent canine impacted
σ� Permanent incisor impacted
σ� Permanent premolar impacted
σ� All are related
σ� Unrelated
Transposition of the teeth when ?
σ� Permanent lateral in canine position
σ� Permanent canine in lateral position
σ� Permanent premolar in canine position
σ� Permanent canine in premolar position
σ� All are related
90. Total arch length minus total teeth width when the result is a negative value, it’s indicates ?
σ� The presence of spacing
σ� The presence of crowding
σ� The presence of alignment
σ� The severe of malocclusion
σ� All unrelated
91. Total arch length minus total teeth width when the result is a positive value, it’s indicates ?
σ� The presence of crowding
σ� The presence of spacing
σ� The presence of alignment
σ� The severe of malocclusion
σ� All unrelated
92. The based on Tanaka and John stone method was indicated when in ?
σ� Permanent teeth are presence
σ� Late mixed dentition
σ� Early mixed dentition
σ� Mixed dentition
σ� All unrelated
Every millimeter of incisor overjet reduction requires the space in the dental arch ?
σ� 1 mm
σ� 2 mm
σ� 3 mm
σ� 4 mm
σ� All unrelated
94. Every millimeter of incisor overjet increase, the space are created in the dental arch ?
σ� 1 mm
σ� 2 mm
σ� 3 mm
σ� 4 mm
σ� All unrelated
How can creating space for teeth alignment ?
σ� Extraction
σ� Distal movement of molars
σ� Enamel stripping
σ� Expansion
σ� All are related
Before planning extractions of any permanent teeth, it’s important to ensure that ?
σ� All remaining teeth are present
σ� Developing are appropriately
σ� May need radiograph
σ� All are related
σ� All unrelated
What factors that effect to the choice of the teeth for extraction ?
σ� Position
σ� Prognosis
σ� Amount of space required
σ� Anchorage requirements
σ� All are related
Which teeth are often to choice to be extracted when space requirement is moderate or severe ?
σ� First permanent premolars
σ� Second permanent premolars
σ� First permanent molars
σ� Second permanent molars
σ� All unrelated
99. The a mount of crowding is classified as ?
σ� Mild crowding
σ� Moderate crowding
σ� Severe crowding
σ� All are related
σ� All unrelated
100. Modules were used in fixed appliances in order to hold ?
σ� Brackets
σ� Wires
σ� Bands
σ� All are related
σ� All unrelated
101. Midline coincidence mean ?
σ� Upper midline shift
σ� Lower midline shift
σ� Upper and Lower midline shift
σ� Upper and Lower midline in the middle
σ� Unrelated
What causes of the easy to relapse of overbite reduction when orthodontic treatment was finished ?
σ� Use hawley retainer regime
σ� No occlusal stop
σ� No anterior bite plane
σ� No posterior bite plane
σ� Unrelated
103. Why the model base were kept as a records for the patient in orthodontic treatment ?
σ� Do it as an aesthetic
σ� Keep the position
σ� Easy to know the relationship of occlusion
σ� Easy to count teeth
σ� All are related
Why need the precise way to take impression for orthodontic treatment patient ?
σ� Need to check the sulcus
σ� Need to check the fraenum
σ� Need to check unerupted teeth
σ� All are related
σ� All unrelated
A 11 years old girl who has class I malocclusion and skeletal I base , the upper and lower teeth alignment associated with unilateral posterior crossbite and mandibular displacement. How can treat this patient ?
σ� Arch expansion screw
σ� Functional appliance
σ� Functional appliance Orthognatic surgery
σ� All are related
σ� All unrelated
106. A 12 years old boy who has class III incisor relationship with the bite edge to edge associated skeletal III base by ANB= 0,5 degree. How could manage this patient ?
σ� Removable appliance with cantilever spring
σ� Removable appliance with screw expansion
σ� Removable appliance with facemask
σ� Removable appliance with high pull headgear
σ� Unrelated
Why need to wear removable appliance combined with fixed appliance in orthodontic treatment ?
σ� Easy to clean teeth
σ� Reduce harmful
σ� Need reinforce anchorage
σ� The price is cheaper
σ� Unrelated
Hawley retainer regime was placed after orthodontic treatment ?
σ� Wait for bone reorganize
σ� Keep for stability
σ� To prevent the relapse
σ� All are related
σ� All unrelated
Adams claps on the first molar for retention were used the wire in diameter ?
σ� 0.4 mm
σ� 0.5 mm
σ� 0.6 mm
σ� 0.7 mm
σ� All unrelated
110. Buccal canine retractor can be used in wire size ?
σ� 0.4 mm or 0.6 mm
σ� 0.5 mm or 0.7 mm
σ� 0.6 mm or 0.7 mm
σ� 0.7 mm or 0.8 mm
σ� All unrelated
How can treat the incisors crossbite when patient is growing ?
σ� Z- Spring
σ� T- Spring
σ� Screw
σ� Lower inclined bite plane
σ� All are related
112. What active component that can move molar distally ?
σ� Coil spring
σ� Claps spring
σ� Headgear
σ� Screw
σ� All are related
Why need posterior bite plane in removable appliance ?
σ� To obstruct the buccal segment teeth to erupt.
σ� To release the occlusal interference
σ� To control the anchorage
σ� To reduce the overbite
σ� All unrelated
How can measure the overjet when intra-oral examination check ?
σ� Use dividor
σ� Use metal ruler
σ� Use meter string
σ� All are related
σ� All urelated
Which one is the correct answer of the permanent canine crown width ?
σ� 6 mm
σ� 7 mm
σ� 8 mm
σ� 9 mm
σ� All unrelated
Which one is the correct answer of the permanent first premolar crown width ?
σ� 6 mm
σ� 7 mm
σ� 8 mm
σ� 9 mm
σ� All unrelated
How can reduce the overjet when use the removable appliance ?
σ� Screw expansion
σ� Headgear
σ� Class II traction
σ� Labial bow
σ� All unrelated
Robert retractor was used in removable appliance to ?
σ� Protract the labial segment teeth
σ� Retract the labial segment teeth
σ� Reduce the overbite
σ� Intrude the incisors
σ� All unrelated
119. Robert retractor was indicated with size of wire ?
σ� 0.7 mm
σ� 0.6 mm
σ� 0.5 mm
σ� 0.4 mm
σ� All unrelated
Buccal canine retractor was indicated when it’s position ?
σ� Mesially inclined
σ� Distal inclined
σ� Palatally position
σ� Canine upright
σ� All unrelated
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