MDS PREP
Which of the following surveyors has a swiveling horizontal arm?
1) Ney surveyor
2) Jelenko surveyor
3) Williams surveyor
4) Therma-sculpt surveyor
Prosthodontics
Answer: 2
The Jelenko surveyor is noted for its swiveling horizontal arm, which allows for greater flexibility in surveying the cast compared to other types.
The thickness of the spacer used in spicial tray is
1. 2.5 mm
2. 2.0 mm
3. 1.5 mm
4. 1.0 mm
Prosthodontics
Answer: 2
The thickness of the spacer used in a special tray is 2.0 mm.
Of the three dimensions of colour, the one which describes the dominant colour of the object is
1. Hue
2. Value
3. Chroma
4. Maverick
Prosthodontics
Answer: 1
Hue refers to the attribute of a color that allows it to be classified as red, blue, green, etc. It is one of the three dimensions of color, along with value (lightness) and chroma (intensity or saturation).
The main purpose of covering as much area as possible within functional limits by impression is to
1. Distribute the occlusal stresses and increase the peripheral seal
2. Increase the bulk of CD which helps to seat the denture
3. To increase the bulk of CD to prevent its fracture
4. All of the above
Prosthodontics
Answer: 1
The main purpose of covering as much area as possible within functional limits by impression is to distribute the occlusal stresses and increase the peripheral seal.
Treatment of choice for a patient with a maxillary complete denture with severe bilateral tuberosity undercuts
1. Remove both tuberosity undercuts
2. Remove the tissue on only one side if possible
3. Maintain the undercuts as they help in retention
4. Use an mucostatic impression material
Prosthodontics
Answer: 2
Treatment of choice for a patient with a maxillary complete denture with severe bilateral tuberosity undercuts is to remove the tissue on only one side if possible.
Guiding planes on abutment teeth provide
1) Predictable clasp retention
2) Increased resistance towards horizontal movement
3) Transmit forces along long axis of tooth
4) Guides the key into the key way
Prosthodontics
Answer: 1
The main function of guiding planes is to provide a stable and predictable path for the RPD to follow during insertion and removal. This helps in achieving proper clasp retention, which is essential for the stability of the denture. While they also contribute to resistance towards horizontal movement and guiding the key into the key way, their primary purpose is to ensure clasp retention.
Isolated recession on a labially prominent upper canine is noted. Examination revealed absence of keratinised gingiva in that area and the vestibule is shallow. The best mehtod to create zone of attached gingiva in this case
1. Free pedicle graft
2. Lateral sliding graft
3. Apically positioned flap
4. Coronally displaced flap
Prosthodontics
Answer: 1
Isolated recession on a labially prominent upper canine is noted. Examination revealed absence of keratinized gingiva in that area and the vestibule is shallow. The best method to create a zone of attached gingiva in this case is a free pedicle graft.
What does the term "height of contour" refer to in dental
surveying?
1) The lowest point of a tooth
2) The greatest circumference of a tooth at a selected axial position
3) The average height of all teeth
4) The position of the gum line
Prosthodontics
Answer: 2
The height of contour is defined as the line encircling a tooth that designates its greatest circumference at a specific axial position.