Year4DD/Orthodontic I/Dr.Chum Mony/

A detailed anatomical illustration of orthodontic concepts, showcasing various dental arches, facial profiles, and malocclusions against a background of dental tools.

Orthodontic Knowledge Challenge

Test your understanding of orthodontics with this engaging quiz! Designed for dental students and professionals, it covers a wide range of topics related to orthodontics, including anchorage, malocclusion, and facial types.

Key Features:

51 carefully crafted questions
Multiple choice format for easy answering
Scores to track your performance

60 Questions15 MinutesCreated by AligningSmile101

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

Concave

Convex

Straight

All are correct

52. Which among the following are horizontal planes?

I. FH plane

II. SN plane

III. axis of 1

IV. Occlusal plane

54. Two or more teeth moving in opposite directions and pitted against each other is equal and opposite. The anchorage is what?

Simple

Stationary

Reciprocal

Reinforced

55. Which among the following are sources of extraoral anchorage?

anchorage?

I. cervical

II.Occipital

III. Cranial reciprocal

56. The anchorage distributed to both upper and lower jaws is?

Intramaxillary

Intermaxillary

Single

Compound

57. A criss cross elastic to correct posterior cross bite.?

Simple, reciprocal, intraoral, intermaxillary

Stationary, reciprocal, intraoral, intermaxillary

Multiple, reciprocal, intraoral, intramaxillary

All are corrects

58. Diastema closure of 2 central incisors by elastic traction, tipping the crowns together.?

Stationary, reciprocal, intraoral, intermaxillary

Simple, reciprocal, intraoral, intramaxillary

Simple, reciprocal, intraoral, intermaxillary

None

59. The nature of degree of resistance and displacement of an anatomic unit for the purpose of effective tooth movement.?

Active element

Anchorage

Tissue reaction

Retention

61. Resistance to tooth movement is related to the following:?

I. Alveolar bone
II. Basal bone

III. Teeth

IV. intercuspation of teeth

63. Which among the following are anchorage according to the number of units?

I. single

II. Compound

III. Intra maxillary

IV. reinforced

64. The anchorage in which the resistance of one or more dental units are utilized to move one or more opposing dental units.?

Simple

Stationary

Reciprocal

Reinforced

65. The anchorage in which the units situated in one jaw is used to effect tooth movement in the other jaw.?

Intramaxillary

Intermaxillary

Intraoral

Extraoral

66. It is described as very broad, short faces with square dental arches.?

Brachycephalic

Dolicocephalic

Mesocephalic

None of the choices

68. Predominant type of malocclusion seen in mixed dentition is?

Crowding

Anterior open bite

Class II division 1

All are corrects

69. Which among the following are variations in facial type?

I. oligocephalic

II. Brachycephalic

III. Dolicocephalic

IV. mesocephalic

70. A system of malocclusion that uses gnathostatic approach.?

Angle

Dewey-Anderson

Simon

Ackermann-Profitt

71. Unilateral mesiocclusion with zero over jet and overbite.?

Class III type 1 subd.

Class II type 2 subd

Class III type 3 subd

All are corrects

72. Neutroclusion with labioversion of maxillary centrals and buccoversions of mandibular 1st premolar.?

Class 1 type 2 & 3

Class 1 type 2 & 4

Class 1 type 2 & 5

All are corrects

73. Unilateral distoclusion with linguoversion of maxillary centrals and labioversion of lateral incisors?

Class II div 1 subd

Class II div 2 subd

Class II div 2

All are corrects

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

A. contraction

B. abstraction

C. attraction

D. distraction

75. 75. A narrow maxillary arch with respect to midsagittal plane is said to be in?

Protraction

Retraction

Contraction

Distraction

76. Cleidocranial dysostosis:?

77. Vogelgesicht:?

78. Pierre-robin syndrome:?

79. Treacher-collin syndrome?

80. The following landmarks are used to determine the protrusiveness of the mandibular base in relation to the cranial base.?

Sella, nasion, supramentale

Sella, nasion, subspinale

Sella, orbitale, pogonion

None of the above

82. The best alternative diagnostic aid in the absence of cephalometric headplate.?

Study cast

Radiograph

Facial photographs

All of the above.

83. Abnormal habit often known as a residuum of the finger sucking habit.?

Bruxism

Thumb sucking

Nail biting

Tongue thrusting

84. Word used in Orthodontics which means resistance to the displacement:?

Tipping

Rotation

Anchorage

Translation

85. Movement of teeth in which the crown and root moved in the samed direction.?

Rotation

Translation

Tipping

Combination of tipping and rotation

87. This type of force occurs when removable appliances are used.?

Continuous

Interrupted-continuous

Intermittent

Tipping

88. Abnormal lip activity is almost always associated with:?

Class II, div. 1

Class III

Class II Div. 2

Class

91. The sum of the widths of CDE is generally:?

Same as that of permanent successors

Greater than that of permanent successors

Less than that of permanent successors

Not related to that of permanent successors

93. System that describes the antero-posterior relationship of the maxilla and the mandible based on the position of the first permanent molar.?

Simon’s

Angle’s

Ackermann-Profitt’s

Lischer’s

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

Class II Div. 2

Class II div. 2 subd

Class II div.

Class II Div. 1

95. Lower molar is distally positioned in relation to upper molar.?

Class I

Class II

Class III

All are corrects

97. As maxilla is translated downward and forward, bone is removed from __ surface?

Posterior

Lateral

All are corrects

98. Which of the following are principal growth sites of mandible?

I. Posterior surface of ramus

II. Condyle

III. Coronoid process

IV. chin

100. Incisor liability:?

Difference between deciduous and permanent incisors , the result of which is positive.

Difference between deciduous and permanent incisors, the result of which is negative

Difference between primate and leeway space

Difference between interdental and primate space

102. Changes in facial growth in adult.?

Facial skeleton changes greater than soft tissue profile

Shortening of nose

Flattening of lips

All of the above.

103. Intrauterine molding may lead to…?

Mandibular prognathism

Maxillary deficiency

Anterior open bite

Maxillary protrusion

104. Hapsburg family has a strong genetic influence on__?_

Retruded maxilla

Retruded mandible

Overgrowth maxilla

Protruded mandible

105. Hyalinized areas:?

Necrotic or cell free area

Presence of osteoclast

With cellular elements

With macrophages

106. Force level declines steadily to zero between activations.?

Continuous

Interrupted

Intermittent

None of the above

107. Two forces equal in magnitude and opposite in direction.?

Moment

Couple

Center of rotation

Center of resistance

109. The best time to influence growth is during the time of greatest change, they are best treated, that is before and during puberty.?

First statement is true, the second statement is false

First statement is false, the second statement is true

Both statements are true

Both statements are false

110. Initial ossification of these bones preceeded peak growth in boys.?

Hook of hamate

Ulna and radius

Pisiform

Metacarpals and metatarsals

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