MDS PREP
Which of the following factors is/are not important before relining complete
dentures?
1. VDO should be satisfactory
2. Centric occlusion should not coincide with centric relation
3. Patients appearance should be accept able to the patient and dentist
4. Denture base extension should be ad equate
Prosthodontics
Answer: 2
Explanation: While it is important for the vertical
dimension of occlusion (VDO) to be satisfactory, and for the patient's
appearance and denture base extension to be adequate, the statement that
"centric occlusion should not coincide with centric relation" is not a necessary
condition for relining. In fact, in many cases, centric occlusion and centric
relation should coincide for optimal function. Therefore, option 2 is the
correct answer.
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.
Examination of patient revealed hyperplastic tuberosity touching the retromolar pad in mandibular rest position. You would like
1. Deepen the retromolar pad before construction of the CD
2. Reduce the tuberosity before constructing complete dentures
3. Both of the above
4. None of the above
Prosthodontics
Answer: 2
Examination of the patient revealed hyperplastic tuberosity touching the retromolar pad in the mandibular rest position. You would like to reduce the tuberosity before constructing complete dentures.
You would like to advise your patient to clean RPD
1) Early in the morning
2) Twice a day
3) After every meal
4) Thrice a day
Prosthodontics
Answer: 3
An RPD, or Removable Partial Denture, is a dental appliance that replaces one or more missing teeth. It is important to clean an RPD thoroughly after every meal to remove food debris and plaque, which can lead to dental issues like gum disease, decay of remaining teeth, and bad breath. Cleaning an RPD regularly helps maintain oral hygiene and the health of the patient's remaining teeth and gums. While it is generally recommended to clean it at least twice a day, cleaning after every meal is ideal to prevent the buildup of bacteria and food particles. The patient should also soak the RPD in a cleaning solution overnight to ensure thorough sanitization and maintenance of the appliance.
The anatomic landmarks used to establish the posterior extent of the upper complete denture
1. Petrygomaxillary notch and fovea palatine
2. Pterygopalatine fissure and anterior border of the tuberosity
3. Posterior nasal spine and the palatine bone
4. Posterior nasal spine and the posterior border of the tuberosity
Prosthodontics
Answer: 1
The anatomic landmarks used to establish the posterior extent of the upper complete denture are the pterygomaxillary notch and fovea palatine.
For a semi adjustable articulator, the sagittal inclination of the incisal
guidance table is determined by
1. bringing the mandible approximately 6mm forward
2. bringing the cuspids into an end to end relationship
3. altering the vertical dimension till the incisal guide pin contacts the guide
table
4. bringing the central incisors into an end to end relationship
Prosthodontics
Answer: 4
Explanation: The sagittal inclination of the incisal guidance table is set to
match the patient's natural incisor relationship. By bringing the central
incisors into an end-to-end relationship, the articulator can be adjusted to
simulate the patient's individual incisal guidance, which is essential for
accurate jaw movement and occlusion.
Loss of several teeth may result in
1. Change in the facial contour
2. TMJ disturbances
3. Periodontal disturbances
4. All of the above
Loss of several teeth may result in all of the above: change in the facial contour, TMJ disturbances, periodontal disturbances.
Size of the bur for preparing lingual rest seat for an RPD is
1) 1/10th inch
2) 1/4th inch
3) 1/2 inch
4) 1 inch
Prosthodontics
Answer: 2
Explanation:
The appropriate size of the bur for preparing a lingual rest seat for a removable partial denture (RPD) is typically 1/4th inch. This size allows for the proper shaping and contouring of the rest seat to ensure a secure fit for the prosthesis.