1. Most accurate reproducible relationship for recording jaw relations is

A) physiologic rest position
B) Centirc occlusion
C) Centric relation
D) Both B & C

Ans; C
Centric relation is the most accurately reproducible for recording jaw relations. It is muscle determined position

• The least reproducible relation is protrusive relation

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2. When patient closes in centric occlusion if lower jaw is placed anteriorly in relation to upper jaw, it is called as

A) Normal occlusion
B) Centric occlusion
C) Pre normal occlusion
D) Centric relation

Ans: C,
when maxilla is ahead it is called as prenormal or class III malocclusion. When maxilla is ahead it is called as postnormal or class II or disocclusion

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3. The interarch distance measure when the occlusal rims are in uniform contact is

A) Freeway space
B) Vertical dimension of occlusion
C) Vertical dimension of rest
D) Christensen’s space

Ans: B
The difference between the VDR & VDO gives the freeway space or interocclusal space. It is usually 2-4mm when observed at the position of premolars
Freeway space or IOS = VDR-VDO

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4. Muscles involved in centric relation

A) Temporalis and masseter
B) Medial and lateral pterygoid
C) Temporalis and lateral pterygoid
D) None of the above

Ans: A

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5. Niswongers technique is used to determine

A) Horizontal relation
B) Vertical relation
C) Orientation relation
D) Centric relation

Ans: B ,
Physiological methods: Power point by Boos

Physiological rest position: Niswongers method ( Niswonger and Thomson in 1934). It is not considered as an accurate method because it requires patients cooperation, which is variable and alterations in jaw position can occur during this procedure.

Phonetics:
▪ Silverman’s Closest Speaking Space – This differs from the Niswongers and Thomson’s method in that the Niswonger’s method measure the vertical dimension when the muscles controlling the mandible are at the rest or physiological tonus , whereas in this method the muscles are active.

▪ The F or V and S speaking anterior tooth relation ( Pound and Murrel)

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6. The functionally generated path technique was originally described by

A) Meyer
B) Shillingburg
C) McLean
D) Hughes

Ans: A
The functional generated path technique for use in fixed prosthodontics first discussed by FS Meyer in 1938; has been popularized by the Pankey Mann Institute
The functionally generated path as described is based on the original work of Meyer who developed the functional bite technique for full denture construction.

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7. To transfer the axis orbital plane we require

A) Arbitrary facebow
B) Kinematic facebow
C) Either Arbitrary or Kinematic facebow
D) An aar bow only

Ans: C

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8. Pantograph tracing is used for

A) Recording jaw movements
B) Testing the speech
C) A radiographic technique similar to OPG
D) All of the above

Ans: A

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9. Wills gauge is used to measure

A) Vertical height
B) Bizygomatic width
C) Intercondylar distance
D) Interpapillary width

Ans: A

Wills gauge: used to measure vertical height of face
Boley gauge: used to record the measurements between the borders of maxillary and mandibular dentures
Boos bimeter: device measuring maximum force of closure

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10. During gothic arch tracing, apex indicates

A) Centric occlusion
B) Horizontal jaw relation
C) Centric relation
D) Physiologic rest position

Ans: C

The gothic arch tracing is an extraoral method to record centric relation. The lateral movements should be made until the apex is sharp to indicate the true retruded position of the mandible

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