MDS PREP
The main purpose of boxing an impression is
1. To serve as a base for cast poured
2. To preserve the border width after border moulding
3. To prevent distortion of the impression
4. All of the above
Prosthodontics
Answer: 2
The main purpose of boxing an impression is to preserve the border width after border molding.
Effective alternation in the abutment with short clinical crowns for proper clasp retention can be achieved by
1) Proper guiding planes
2) Restoring with full crown
3) Altering the height of contour
4) All of the above
Prosthodontics
Answer: 2
When dealing with short clinical crowns in RPD abutment teeth, restoring the teeth with full crowns can provide additional retentive surfaces and support for the clasp. This can be particularly useful when the available undercuts are limited, thereby enhancing the overall stability and retention of the prosthesis.
Vibrating line is on the
1. Hard palate
2. Junction of hard and soft palate
3. Soft palate
4. Junction of muscularis uvulae and palatien muscle
Prosthodontics
Answer: 3
The vibrating line is on the junction of hard and soft palate.
A dental instrument which creates aerosols containing large number of microorganisms is the
1. Evacuator
2. Ultrasonic scaler
3. Amalgam condenser
4. Endodontic reamer
Prosthodontics
Answer: 2
A dental instrument which creates aerosols containing a large number of microorganisms is the ultrasonic scaler.
Surveyor helps in all of the following except
1) Determination of the clasp placement
2) Determination of the guiding planes
3) Determination of the support to the RPD
4) Determination of placement of the major connector
Prosthodontics
Answer: 3
A surveyor is a device used in the fabrication of removable partial dentures (RPDs) to assess and establish the path of insertion and removal. It is primarily involved in determining the guiding planes and the placement of the major connector and retentive elements like rests and minor connectors. It does not directly assess the support provided by the underlying tissues to the RPD, which is influenced by factors such as the edentulous ridge contour and the type of RPD design.
Which of the following is not a mouth temperature except
1. Adaptol
2. Korrecta type I
3. HL physiologic paste
4. IOWA wax
Prosthodontics
Answer: 2
Which of the following is not a mouth temperature except Korrecta type I.
All of the following are true regarding the use of cast circumferential clasps, except that, the
1. retentive clasp terminal should originate occlusal to the height of contour
2. retentive terminal should always point towards the gingiva
3. clasp arm should be kept as low on the tooth as possible
4. all of the above
Prosthodontics
Answer: 2
In the design of cast circumferential clasps, the retentive terminal should ideally point away from the gingiva (toward the occlusal surface) to allow for proper engagement and retention without causing trauma to the gingival tissue.
In which of the following situations the alveolar ridge resorption is least
1. Anterior mandibular area with overdentures on canines
2. Anterior mandibular area with class IV lower RPD opposing the upper CD
3. Anterior maxillary area when upper CD versus a lower CD
4. None of the above
Prosthodontics
Answer: 1
In which of the following situations the alveolar ridge resorption is least: anterior mandibular area with overdentures on canines.