MDS PREP
Physiological rest position is related to
1. Centric relation
2. Centric occlusion
3. Vertical dimension
4. Lateral shift of the jaws
Prosthodontics
Answer: 1
Physiological rest position is related to centric relation.
For long span distal extension bases where rigidity is critical the major connector of choice is
1) Palatal strap
2) Anteroposterior palatal bar
3) Closed horse-shoe
4) Horse-shoe
Prosthodontics
Answer: 3
A closed horse-shoe major connector provides increased rigidity and support for
long-span distal extension bases in removable partial dentures. It helps
distribute forces evenly and enhances the stability of the prosthesis.
Interocclusal space is
1. Space between upper and lower teeth
2. Space between maxilla and mandible at rest
3. Space between the jaws when muscles that elevate and depress the mandible are minimum tonic contraction
4. None of the above
Prosthodontics
Answer: 3
Interocclusal space is the space between the jaws when muscles that elevate and depress the mandible are at minimum tonic contraction.
Benett movement is
1) Direct lateral side shift of the mandible that occurs simultaneously with lateral mandibular excursion
2) Direct medial side shift with medial mandibular excursion
3) Direct lateral side shift with medial mandibular excursion
4) None of the above
Prosthodontics
Answer: 1
The Bennet movement is a type of movement that occurs in the temporomandibular joint (TMJ) during the lateral excursion of the mandible, particularly when the mouth is open. It involves the sliding of the articular disk in a lateral direction within the joint space, which allows for the condyle to move smoothly along the articular eminence of the temporal bone. This movement is essential for the normal functioning of the TMJ during activities like chewing and speaking. It is the first type of movement to occur during lateral excursion and is crucial for maintaining the proper alignment of the TMJ components during side-to-side jaw motion.
Most semiadjustable articulators have a fixed intercondylar distance of
1. 200mm
2. 160mm
3. 70mm
4. 110mm
Prosthodontics
Answer: 4
Most semiadjustable articulators have a fixed intercondylar distance of 110mm.
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.
When determining the posterior limit of the maxillary denture, which of the following in on the posterior border
1. Hamular notch
2. Fovea palatine
3. Vibrating line
4. Hamular process
Prosthodontics
Answer: 1
When determining the posterior limit of the maxillary denture, the hamular notch is on the posterior border.
Which of the following is not desirable in complete denture occlusion
1 Minimum occlusal contact areas for reduced pressure in comminuting food
2 Functional lever balance by favorable tooth to ridge crest position
3 Balanced occlusal contacts bilaterally for all eccentric movements
4 Anterior incisal contacts during all posterior masticatory functions and para
function
Prosthodontics
Answer: 4
Explanation: Anterior incisal contacts during posterior
masticatory functions are not desirable because they can lead to instability and
improper function of the complete denture. Ideally, posterior teeth should
provide the primary occlusal contacts during chewing, while anterior teeth
should not interfere with these functions. This helps maintain a balanced
occlusion and prevents excessive wear or damage to the denture.