MDS PREP
"Guiding planes" relate to
1) Path of insertion
2) Means of retention
3) Extent of undercuts
4) Tilt of abutment teeth
Prosthodontics
Answer: 1
guiding planes are flat, polished surfaces on the abutment teeth that guide the RPD along a specific path during insertion and removal. They are located adjacent to the edentulous area and are crucial for the proper seating and function of the denture.
The purpose of plane of orientation is
1. To serve as a guide in establishing occlusal plane
2. To aid in measuring height and length of posterior teeth
3. Both A and B
4. None of the above
Prosthodontics
Answer: 1
The purpose of the plane of orientation is to serve as a guide in establishing the occlusal plane.
The concept of occlusion that maintains that the anteroposterior plane of occlusion should be parallel with the denture foundation and not dictated by the horizontal condylar guidance is called
1. Lingualised concept
2. Balanced concept
3. Neutrocentric concept
4. Mutually protected concept
Prosthodontics
Answer: 3
The neutrocentric concept of occlusion emphasizes that the occlusal plane should be parallel to the denture foundation and not influenced by the horizontal condylar guidance. This approach aims to achieve a more stable occlusion by focusing on the relationship between the occlusal plane and the supporting structures.
Most accurate reproducible relationship for recording jaw relation is
1. Physiologic rest position
2. Centric occlusion
3. Centric relation
4. Both B and C
Prosthodontics
Answer: 3
Most accurate reproducible relationship for recording jaw relation is centric relation.
Which of the following shows 200 % of its adult growth by age 9-10 years
1. Lymphoid
2. General
3. Genital
4. Neural
Prosthodontics
Answer: 1
Which of the following shows 200% of its adult growth by age 9-10 years: Lymphoid.
The average biting forces generated the natural dentition and complete
dentures are respectively
1. 200N and 600N
2. 9000 N and 7000 N
3.100N and 30N
4. 600N and 110N
Prosthodontics
Answer: 4
Explanation: Natural dentition can typically withstand average biting forces of
around 600N, which is significantly higher than the 110N that complete dentures
can generally handle. Complete dentures rely on muscular and bony support and
are limited by the resiliency of the soft tissues in the oral cavity.
Decreased vertical dimension of occlusion (increased interocclusal space) results in all of the following except
1. Loss of muscle power
2. Sagging of the corners of the mouth
3. Senile appearance
4. Increase in the masticatory efficiency
Prosthodontics
Answer: 4
Decreased vertical dimension of occlusion results in all of the following except an increase in masticatory efficiency.
Identify the wrong statement regarding salivary scan
1. Specifity is less than sialograms
2. Salivary scan is functional whereas sialagram is anatomical
3. When both are indicated scan is done first
4. When both are indicated sialogram is done first
Prosthodontics
Answer: 4
Identify the wrong statement regarding salivary scan: When both are indicated, sialogram is done first.