MDS PREP
In a complete denture, the position of the mandibular first premolar is
determined by the
1. mental foramen
2. adjacent second premolar
3. termination of the mylohyoid ridge
4. mandibular canine
Prosthodontics
Answer: 4
Explanation: In the arrangement of teeth in a complete denture, the
mandibular first premolar is typically positioned with its mesial aspect in
contact with the lateral aspect of the mandibular canine. This is part of the
denture setup to ensure proper occlusal relationships and aesthetics.
Lateral throat form occupied by retromylohoid flange in lower denture
1) Has nothing to do with the denture
2) Should be large, one-half inch
3) Should be small, less than half inch
4) Should be larger, more than 2 inches
Prosthodontics
Answer: 2
The retromylohyoid area is an important anatomical region in the lower denture that contributes to the retention and stability of the denture. The lateral throat form, which is the space between the retromylohyoid flange and the surrounding tissues, should be adequately large (approximately one-half inch) to allow for proper function and comfort of the denture. A well-formed lateral throat area helps in achieving a good seal and prevents food impaction.
Which muscle has dual function as related to CD
1. Masseter
2. Temporalis
3. Buccinator
4. Lateral pterygoid
Prosthodontics
Answer: 1
Which muscle has dual function as related to CD: masseter.
Uncontrolled diabetes poses a problem to prosthodontist as
1. More bone resorption
2. Increased salivary flow
3. Less bone resorption
4. Less tissue laxity
Prosthodontics
Answer: 1
Uncontrolled diabetes poses a problem to the prosthodontist as it leads to more bone resorption.
The range of motion, as measured in millimeters, is least for the
1. pure hinge like opening and closing movement
2. protrusive movement
3. left lateral movement
4. Bennet movement
Prosthodontics
Answer: 4
Explanation:
Pure hinge-like opening and closing movement: The range of pure rotation in
the temporomandibular joint (TMJ) was determined to be up to 15–20 mm in the
1960s. However, recent research suggests that pure rotational movement may not
occur.
Protrusive movement: The normal range of motion for protrusive movement is
8–12 mm.
Left lateral movement: The normal range of motion for left lateral movement
is 8–12 mm. The normal range of motion for mouth opening is 35–60 mm.
The average immediate Bennett shift was found to be 1.05 mm on the left
side and 1.12 mm on the right side when firm guidance was used.
What does the term "block out" refer to in the context of dental
surveying?
1) The removal of teeth
2) The elimination of undesirable undercut on the master cast
3) The process of cleaning the cast
4) The application of wax to the cast
Prosthodontics
Answer: 2
Block out is the process of eliminating
undesirable undercuts on the master cast before duplication, ensuring a better
fit for the prosthesis.
In the sequencing of a treatment plan for a conventional immediate complete
denture, the dentures are fabricated
1. before any teeth are extracted
2. immediately after the extraction of all posterior teeth
3. 6-8 weeks after the extraction of posterior teeth
4. after extraction of all the teeth
Prosthodontics
Answer: 4
Explanation: Immediate complete dentures are fabricated after the extraction
of all the teeth. They are inserted into the patient's mouth immediately after
the extraction to provide immediate tooth replacement and allow for healing
without a gap in the patient's smile.
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.