MDS PREP
The primary function of the compensating curve, incorporated in complete
dentures, is to provide
1 stability in centric relation
2. balanced occlusion during lateral movements of the mandible
3 an esthetically pleasing denture
4. balancing occlusal contacts during protrusive movements
Prosthodontics
Answer: 4
Explanation: The compensating curve is designed to ensure
that occlusal contacts are balanced during protrusive movements, which is
essential for maintaining stability and function of the complete denture. This
curve helps to distribute occlusal forces evenly and prevents tipping or
dislodgment of the denture during functional movements. The other options do not
accurately reflect the primary purpose of the compensating curve.
Posterior palatal seal is recorded when the head is bent at
1. 30 degree
2. 150 degree
3. 60 degree
4. 45 degree
Prosthodontics
Answer: 1
Posterior palatal seal is recorded when the head is bent at 30 degrees.
Instructing the patient to say "ah" with short vigogous bursts will help in visualizing
1. Soft palate
2. Posterior vibrating line
3. Anterior vibrating line
4. Junction of hard and soft palate
Prosthodontics
Answer: 3
Instructing the patient to say "ah" with short vigorous bursts will help in visualizing the anterior vibrating line.
Secondary Impression material for edentulous pt with hyper gag reflex?
1) Alginate
2) Silicon rubber base
3) Plaster of paris
4) ZOE
Prosthodontics
Answer: 2
Secondary impression material for edentulous patients with hyper gag reflex is silicon rubber base.
The mean denture bearing area in the edentulous mandible is approximately
1. 12.25 cm square
2. 16.25 cm square
3. 18.12 cm square
4. 20.25 cm square
Prosthodontics
Answer: 1
The mean denture bearing area in the edentulous mandible is approximately 12.25 cm square.
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.
The primary advantage of an immediate denture is that
1. centric relation (CR) is easier to record
2. less ridge resorption occurs as the ridges are subjected to early function
3. the patients can continue with their social activities without any embarrassment
4. artificial teeth can be set in identical Positions as those occupied by the natural teeth
Prosthodontics
Answer: 3
The primary advantage of an immediate denture is that the patients can continue with their social activities without any embarrassment.
A tooth that has been out of function for a long time is used as abutment for a FPD. The continuous pain resulting from the tooth is mainly due to
1) Irritation of the pulp during preparation for retainer
2) Traction of the periodontal ligament fibres
3) Deflective occlusal contacts
4) Periapical inflammation
Prosthodontics
Answer: 2
When a tooth has been out of function for an extended period, it can experience changes in the periodontal ligament that supports it. The periodontal ligament is a fibrous connective tissue that connects the tooth to the bone and allows for a certain degree of movement. This movement is essential for the health of the ligament and the surrounding tissues. When a tooth is no longer subjected to the normal forces of biting and chewing, the periodontal ligament fibres can become weak or atrophied.
When this tooth is then used as an abutment for a fixed partial denture (FPD), it is once again exposed to the functional stresses that were previously absent. These stresses can cause traction on the periodontal ligament fibres, leading to pain and discomfort. The pain is mainly due to the sudden reintroduction of forces to the ligament that it is not accustomed to handling.