MDS PREP
Which of the following is a step in the surveying procedure?
1) Tooth extraction
2) Cast tilting
3) Tooth whitening
4) Filling cavities
Prosthodontics
Answer: 2
Cast tilting is one of the steps in the surveying procedure, allowing for the assessment of undercuts and the path of insertion.
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.
A non-rigid or semi-rigid connector is indicated in some posterior bridges
1) When span of the bridge is long
2) When draw of the retainers cannot be achieved due to non-parallelism of the abutments
3) When the abutment teeth are parallel in short span of bridge
4) None of the above
Prosthodontics
Answer: 2
Non-rigid or semi-rigid connectors are used in dental bridges when there is a need to accommodate non-parallel abutments (option 2). This design allows for some movement between the components of the bridge, which can help in achieving a better fit and function when the abutments are not parallel.
The main purpose of boxing an impression is
1. To serve as a base for cast poured
2. To preserve the border width after border moulding
3. To prevent distortion of the impression
4. All of the above
Prosthodontics
Answer: 2
The main purpose of boxing an impression is to preserve the border width after border molding.
Excessive application of pressure on the posterior portion of the occlusal rim during jaw relations results in
1. Anterior open bite
2. Posterior open bite
3. Anterior deep bite
4. Unbalanced occlusion
Prosthodontics
Answer: 1
Excessive application of pressure on the posterior portion of the occlusal rim during jaw relations results in an anterior open bite.
When there is a prematurity in centric occlusion but not in eccentric or other movements, then reduce
1) Cusps of opposing teeth
2) Mesiodistal position of teeth
3) Opposing fossa or marginal ridge
4) None of the above
Prosthodontics
Answer: 3
Explanation:In cases where there is a premature contact in centric occlusion, it is often necessary to adjust the opposing fossa or marginal ridge to achieve a more harmonious occlusion. This adjustment helps to eliminate the premature contact and allows for proper occlusal function.
The retention and stability of a complete denture may be compromised by
1. large and bulbous tuberosities
2. a deep lingual vestibule
3. absence of mylohyoid ridge
4. a high V- shaped palate
Prosthodontics
Answer: 4
Explanation: A high V-shaped palate can compromise the retention and
stability of a complete denture because it reduces the surface area for the
denture to contact and conform to the palate. This results in less suction and a
smaller seal, making the denture more likely to dislodge during function.
Identify the wrong statement regarding salivary scan
1. Specifity is less than sialograms
2. Salivary scan is functional whereas sialagram is anatomical
3. When both are indicated scan is done first
4. When both are indicated sialogram is done first
Prosthodontics
Answer: 4
Identify the wrong statement regarding salivary scan: When both are indicated, sialogram is done first.