MDS PREP
In a complete denture patient, which of the following is likely to cause difficulty in apposing the lips?
1. Decreased VDO (vertical dimension of occlusion)
2. Failure to provide adequate interocclusal distance
3. Excessive interocclusal distance
4. Decreased nose-chin distance
Prosthodontics
Answer: 2
In a complete denture patient, which of the following is likely to cause difficulty in apposing the lips: failure to provide adequate interocclusal distance.
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.
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 denture bearing area is the part of the jawbone that supports a denture. In an edentulous (toothless) mandible, this area is crucial for the stability and retention of the denture. The mean value of 12.25 cm square is a commonly cited average for the surface area required for a well-fitting and functional lower denture. This area is important for distributing masticatory forces and providing sufficient space for denture construction.
Which of the following is least likely to occur when record bases are formed
from self-curing resins, on the master
cast of an edentulous patient without blocking out the undercuts ?
1 The borders will not be accurately reproduced
2 Record bases will exhibit instability in the patients mouth
3 The casts may be abraded when removing the record bases
4 Record bases may break when removing from the casts
Prosthodontics
Answer: 1
Explanation: When record bases are formed from self-curing
resins without blocking out undercuts, the most likely issues are instability in
the mouth, abrasion of the casts, and potential breakage of the record bases
upon removal. However, the borders of the record bases are typically
well-defined and can be accurately reproduced even if undercuts are not blocked
out. Therefore, option 1 is the least likely occurrence.
Which material is carried in a custom tray?
1. High fusing compound
2. Reversible hydrocolloid
3. Metallic oxide paste
4. Irreversible hydrocolloid
Prosthodontics
Answer: 3
Which material is carried in a custom tray: metallic oxide paste.
Electrocogulation is used for
1. Gingivectomy
2. Flap surgeries
3. Mucogingival surgeries
4. All of the above
Electrocogulation is used for gingivectomy.
When drilling cylindrical implant sites in bone, which the following is false?
1. Copious irrigation should be used with the drill
2. The drill should not rotate more than 5 secs continuously in contact with bone
3. Only speeds above 20,000 rpm should be used in drilling
4. Enough pressure should be used to proceed 0.5-1mm every 5 seconds
Prosthodontics
Answer: 3
When drilling cylindrical implant sites in bone, the following is false: only speeds above 20,000 rpm should be used in drilling.
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.