MDS PREP
Which of the following is true regarding immediate complete dentures?
1. Dentures should be relined or remade in 6-12 months
2. The patient should not wear the dentures for the first 24 hours after
extraction
3. Anterior try in should be done
4. Teeth should always be placed in the same position as natural teeth
Prosthodontics
Answer: 1
Explanation: Immediate complete dentures often require relining or remaking due
to the significant bone and tissue changes that occur during the initial healing
phase after tooth extraction. The reline helps to adapt the denture to the new
contours of the alveolar ridge, providing a more stable and comfortable fit.
Oral examination of an edentulous patient should include digital palpation. Why?
1. The arch form is more accurately evaluated
2. Undercut areas may be better evaluated
3. The ridge relationship may be better evaluated
4. None of the above
Prosthodontics
Answer: 2
Oral examination of an edentulous patient should include digital palpation to evaluate undercut areas better.
A complete denture wearing patient complains of tingling sensation in the lower premolar region. The ridges are resorbed. The most possible explanation
1. Pressure on the mucosa due to ridge resorption
2. Pressure on the mental foramen due to ridge resorption
3. Occlusal discrepancies due to ridge resorption
4. All of the above
Prosthodontics
Answer: 2
A complete denture wearing patient complains of tingling sensation in the lower premolar region. The ridges are resorbed. The most possible explanation is pressure on the mental foramen due to ridge resorption.
Which of the following is not true regarding the muscular influence on
denture borders
1. Masseter muscle may influence the borders and flange of the maxillary denture
2. Temporal muscle may influence the denture flange in the maxillary tuberosity
area
3. Medial pterygoid muscle may influence the denture border in the region of the
pterygomaxillary notch
4. None of the above
Prosthodontics
Answer: 3
Explanation: The medial pterygoid muscle primarily functions to move the
mandible medially and assist in closing the jaw. It does not directly influence
the borders of a maxillary denture in the region of the pterygomaxillary notch.
Instead, it is involved in the movement of the mandible and may indirectly
affect the fit and stability of the denture.
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.
Which survey line is placed in the occlusal third in both near and
far zones?
1) Medium survey line
2) Low survey line
3) High survey line
4) Diagonal survey line
Prosthodontics
Answer: 3
The high survey line is characterized by being positioned in the occlusal third of the tooth in both the near and far zones, which is important for determining the contour of the tooth.
Which of the following is least likely to occur when record bases are formed
from self-curing resins, on the master
cast of an edentulous patient without blocking out the undercuts ?
1 The borders will not be accurately reproduced
2 Record bases will exhibit instability in the patients mouth
3 The casts may be abraded when removing the record bases
4 Record bases may break when removing from the casts
Prosthodontics
Answer: 1
Explanation: When record bases are formed from self-curing
resins without blocking out undercuts, the most likely issues are instability in
the mouth, abrasion of the casts, and potential breakage of the record bases
upon removal. However, the borders of the record bases are typically
well-defined and can be accurately reproduced even if undercuts are not blocked
out. Therefore, option 1 is the least likely occurrence.
To make an impression of hyperplastic tissue, one should
1. Use wax for impression
2. Use elastomeric impressions to displace the tissue
3. Ensure intimate contact of the impression material with the tissue
4. Use specially fitted tray
Prosthodontics
Answer: 3
To make an impression of hyperplastic tissue, one should ensure intimate contact of the impression material with the tissue.