MDS PREP
The main purpose of covering the retromolar pad area is
1. Stability
2. Retention
3. Support
4. Contraction
The main purpose of covering the retromolar pad area is retention.
Acrylic resin posterior teeth along with porcelain anterior teeth should not be
used in complete dentures because
1. it produces resorption of posterior residual ridge as acrylic teeth wear
2 they cause resorption of anterior residual ridge
3. the combination produces harmful stress concentrations
4 This combination can be used
Prosthodontics
Answer: 2
Explanation: The combination of acrylic resin posterior teeth
and porcelain anterior teeth can lead to differential wear and stress
concentrations, which may cause resorption of the anterior residual ridge.
Porcelain teeth are harder and can create more stress on the underlying bone
compared to acrylic teeth, leading to potential resorption. Therefore, option 2
is the correct answer, as it highlights the negative impact on the anterior
ridge.
Orientation records are best transferred by
1. Gothic arch tracing
2. Face-bow record
3. Dual impression technique
4. Any of the above
Prosthodontics
Answer: 2
Orientation records are best transferred by face-bow record.
Instructing the patient to say "ah" with short vigogous bursts will help in visualizing
1. Soft palate
2. Posterior vibrating line
3. Anterior vibrating line
4. Junction of hard and soft palate
Prosthodontics
Answer: 3
Instructing the patient to say "ah" with short vigorous bursts will help in visualizing the anterior vibrating line.
All of the following landmarks are included while making a postdam for maxillary arch except
1. Pterygomaxillary notch
2. Hamular process
3. Fovea palatina
4. Vibrating line
Prosthodontics
Answer: 2
All of the following landmarks are included while making a postdam for maxillary arch except hamular process.
The first step in surveying the casts for RPD is
1) Establishment of guiding planes
2) Establishment of undercuts for retention
3) Establishment of tooth contour for aesthetics
4) None of the above
Prosthodontics
Answer: 1
The initial step in surveying casts for an RPD is the establishment of guiding planes. These planes are essential for determining the path of insertion and removal of the denture, which in turn affects the overall stability and function of the prosthesis. Once the guiding planes are established, other steps such as identifying undercuts for retention and aesthetic considerations can be addressed.
Guiding planes are
1) Located adjacent to the edentulous area
2) Located far anterior to the edentulous area
3) Help in the stability of the denture
4) Provide a different path of insertion and removal
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 following property of saliva affects denture retention
1. Quality and quantity of serous and mucus saliva
2. Quantity of mixed saliva
3. Quantity of only serous saliva
4. Both A and C
The property of saliva that affects denture retention is both quality and quantity of serous and mucus saliva.