MDS PREP
The direction of the resorption of the maxillary ridge
1. Downwards and buccally
2. Upwards and lingually
3. Downwards and lingually
4. Upwards and buccally
Prosthodontics
Answer: 2
The direction of the resorption of the maxillary ridge is upwards and lingually.
While taking impression of flabby fibrous tissue on maxillary ridge for complete denture care is taken to
1. Use a tray with spacer
2. Not maintain intimate contact with tissues
3. Use a close fitting tray
4. Follow normal procedures
Prosthodontics
Answer: 1
While taking an impression of flabby fibrous tissue on the maxillary ridge for complete denture, care is taken to use a tray with spacer.
Because of the great length of this clasp it must be designed with additional sup port, usually in the form of an auxiliary bracing arm. Which clasp is this?
1. Ring clasp
2, Combination clasp
3. Fish hook clasp
4. Multiple circlet clasp
Prosthodontics
Answer: 1
A ring clasp is a type of clasp used in removable partial dentures that encircles the abutment tooth. Due to its length and the potential for movement, it often requires additional support, typically provided by an auxiliary bracing arm, to ensure stability and retention of the prosthesis. This design helps distribute forces more evenly and prevents dislodgment during function.
A maxillary alginate impression is removed with a quick jerk to prevent
1. Syneresis
2. Permanent deformation
3. Elastic deformation
4. Surface details
Prosthodontics
Answer: 2
A maxillary alginate impression is removed with a quick jerk to prevent permanent deformation.
"Guiding planes" relate to
1) Path of insertion
2) Means of retention
3) Extent of undercuts
4) Tilt of abutment teeth
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.
Which are you NOT looking for when exploring the apical third of a canal?
1) Hypercementosis
2) Branches
3) Lateral canal openings
4) Internal root resorbtion
Prosthodontics
Answer: 1
Which are you NOT looking for when exploring the apical third of a canal: hypercementosis.
FPDs are generally contraindicated and the missing teeth replaced with a RPD,
in patients less than
1. 17 years old
2. 10 years old
3. 30 years old
4. 46 years old
Prosthodontics
Answer: 2
FPDs are generally contraindicated for several reasons:
Growth and Development: Children are still in their
growth phase, and their jaws and teeth are developing. Placing a fixed
prosthesis can interfere with normal growth patterns and may require
adjustments or replacements as the child grows.
Eruption of Permanent Teeth: In younger patients,
especially those under 10, many of the permanent teeth have not yet erupted.
Using FPDs in this age group can complicate future dental treatments, as the
position of the teeth may change with the eruption of permanent teeth.
Primary stress bearing area in mandibular edentulous ridge is
1. Buccal shelf
2. Crest of the ridge
3. Retromolar pad
4. Lingual flange
Prosthodontics
Answer: 1
The primary stress-bearing area in the mandibular edentulous ridge is the buccal shelf.