1. The hinge joint articulator was designed by

A) Bonwill
B) Gariot
C) Gysi
D) Hanau

Ans: B ,
Hinge joint articulator is representative of class I articulators. It was designed by Gariot in 1805. It comsisted of a simple hinge with a set screw in the  posterior against a metal plate to serve as a vertical stop.

2. Gnathoscope was discovered by

A) Manson
B) McCollum
C) Kile
D) Bergstrom

Ans: B
1939. Dr. Charles Stuart and Dr McCollum developed the first semiadjustable articulator called the McCollum Gnathoscope. McCollum a devoted student of gnathology developed a mandibular movement recorder ( Gnathograph) and an articulator (Gnathoscope) in 1939. Others in this class are based in principle on this original work

3. Hanau H2 articulator has a intercondylar distance of

A) 90mm
B) 100mm
C) 110mm
D) None

Ans : C,
Hanau H2 articulator is a Arcon type of articulator
It has an intercondylar distance of 110mm
It accepts face bow transfer

4. Lateral condylar guidance is

A) L=12+d/H
B) L=H + d/12
C) L=H/8 + 12
D) L= H+ d/12

Ans: C
The Bennet angle(L) can be calculated from the horizontal condylar inclination (H) by means of Hanau equation.
If the horizontal condylar imclinationis 30° then the Bennet angle would be approximately 16°

5. The condylar inclination in average type of articulators is

A) 10-15 degrees
B) 15-20 degrees
C) 20-25 degrees
D) 30-40 degrees

Ans: B ,
The average condylar inclination in normal healthy individual is around 40-50. It is customary to set average condylar incination at around 20 degrees since articulators are less steep than natural mouth

6. Theoretically for maximum stability of the complete denture the incisal guidance should be

A)  zero degree
B) 45 degree
C) 90 degree
D) none of the above

Ans: A,
The more closely the incisal guide angle approaches 0°, the more stable will be the dentures because of the reduction of lateral inclines.  The cusp inclination of teeth selected should have higher values than incisal guidance

7. Anatomic teeth should have a cusp angle of

A) 30°
B) 31°
C) 32°
D) 33°

Ans: D
Anatomic teeth used in CD have cuspal inclination of 33 degrees.
Anatomic teeth with 30° cuspal angulation are also available and are commonly known as Pilkington Turner teeth

8. The labiodental sounds are

A) F,v,ph
B) S, z, c
C) F, z,s
D) F, v,z

Ans: A
Labiodental sounds “f” and “v” are made between the upper incisors and the labiolingual center to the posterior third of lower lip

9. Theory of balancing ramp occlusion is given by

A) Gysi
B) Frischer
C) Sears
D) Hanua

Ans: C

10. “Set the teeth where they grow” was stated by

A) Fisher
B) Pound
C) Payne
D) Cari Boucher

Ans: D
Anterior artificial teeth should be placed in essentially the same position previously occupied by the natural teeth, and the labial surface of the denture base material should duplicate, as nearly as possible, the contour and position of the ridge