MDS PREP
For a complete denture patient with Class III ridge relation, the freeway space
1. must be increased
2 .must be decreased
3.should be the same as for Class I
4. Do not set teeth for abnormal jaw relations
Prosthodontics
Answer: 2
Explanation: In Class III ridge relations, the freeway space
must be decreased to accommodate the altered jaw relationship and ensure proper
occlusion. This adjustment helps maintain functional stability and comfort for
the patient.
Which of the following is true regarding clasp retention?
1. Cast gold clasps cannot engage greater depth of undercuts than cast
cobalt-chromium alloy clasps of equal dimensions
2. It does not depend on the material from which it is fabricated
3. A wrought clasp requires greater under cut than a cast clasp
4. A cast clasp requires greater undercut than a wrought wire clasp
Prosthodontics Answer: 3
Explanation: Wrought wire clasps are more flexible than cast clasps, allowing them to engage undercuts more effectively. However, they require a greater depth of undercut to achieve the same retention as cast clasps. This is because wrought wire clasps can flex and adapt to the contours of the tooth better than rigid cast clasps. The other statements are incorrect regarding the comparative abilities of clasp materials and their engagement with undercuts.
When patient closes in centric occlusion if lower jaw is placed anteriorly in relation to upper jaw, it is called as
1. Normal occlusion
2. Centric occlusion
3. Pre normal occlusion
4. Centric relation
Prosthodontics
Answer: 3
When a patient closes in centric occlusion, if the lower jaw is placed anteriorly in relation to the upper jaw, it is called pre-normal occlusion.
The modiolus exerts its influence at canine and premolar region of complete dentures. Modiolus is formed by all of the following muscles except
1. Triangularis
2. Buccinator
3. Masseter
4. Orbicularis oris
Prosthodontics
Answer: 3
The modiolus exerts its influence at the canine and premolar region of complete dentures. Modiolus is formed by all of the following muscles except masseter.
If a complete denture patient has genial tubercle at the level of the crest of mandibular ridge, the denture base
1. Can cover them
2. Should not cover them
3. Should cover them but relief is not necessary
4. Should cover them and relief is must
Prosthodontics
Answer: 4
If a complete denture patient has genial tubercle at the level of the crest of the mandibular ridge, the denture base should cover them and relief is a must.
All of the following statements about denture stomatitis are true EXCEPT
1) It is usually not associated with a sore mouth
2) It is usually associated with wearing a denture at night
3) It is more common in diabetes
4) It is more common in men
Prosthodontics
Answer: 4
Explanation:
It is usually not associated with a sore mouth: This
statement is true. Denture stomatitis can occur without
significant soreness, although some patients may experience discomfort. The
condition is often asymptomatic, especially in its early stages.
It is usually associated with wearing a denture at night:
This statement is true. Wearing dentures continuously,
especially at night, can create a favorable environment for the growth of
Candida species, which is a common cause of denture stomatitis.
It is more common in diabetes: This statement is true.
Individuals with diabetes are at a higher risk for infections, including
oral candidiasis, which can lead to denture stomatitis.
It is more common in men: This statement is not
true. Denture stomatitis is generally more prevalent in women,
particularly postmenopausal women, due to hormonal changes that can affect
oral mucosa and immune response.
Of the three dimensions of colour, the one which describes the dominant colour of the object is
1. Hue
2. Value
3. Chroma
4. Maverick
Prosthodontics
Answer: 1
Hue refers to the attribute of a color that allows it to be classified as red, blue, green, etc. It is one of the three dimensions of color, along with value (lightness) and chroma (intensity or saturation).
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.