MDS PREP
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.
Abutment teeth in bilateral distal extension RPD should have all of the following except
1) Retention buccally on one side and lingually on the other side
2) Buccal and lingual retention bilaterally
3) Guiding planes parallel
4) Non-interfering occlusal rests
Prosthodontics
Answer: 1
In a bilateral distal extension RPD, abutment teeth are crucial for the stability and support of the prosthesis. However, it is not ideal to have retention buccally on one side and lingually on the other side as this can lead to tipping and rotation of the denture during function, compromising its stability. Instead, both buccal and lingual retention is preferred for a more balanced and predictable outcome.
Main advantage of RPD over fixed bridge in replacing bilateral lost teeth
1) Cross arch stabilisation
2) Aesthetics
3) Less expensive
4) Comfort of the patient
Prosthodontics
Answer: 1
Cross Arch Stabilization: RPDs provide cross arch stabilization by distributing the forces of mastication more evenly across the remaining natural teeth and the edentulous (toothless) regions of the arches. This is particularly beneficial when there are missing teeth on both sides of the mouth. An RPD connects to the teeth on both sides of the mouth, which helps maintain the alignment and stability of the remaining dentition. In contrast, a fixed bridge typically relies on the adjacent natural teeth for support, which can result in increased load and stress on these abutment teeth. This additional stress can potentially lead to issues such as tooth decay, root fracture, or periodontal disease if not managed properly.
A patient wants new set of CD. The present set which he is wearing now is loose. Examination revealed papillary hyperplasia of palate. The first thing you would like to do
1. Cauterize the papillary growth so that palate is smooth
2. Use tissue conditioners on the maxillary denture for the abuses tissue
3. Making the impression for CD with mucocompressive materials
4. Tell the patient it is difficult to make CD for him
Prosthodontics
Answer: 2
A patient wants a new set of CD. The present set which he is wearing now is loose. Examination revealed papillary hyperplasia of the palate. The first thing you would like to do is use tissue conditioners on the maxillary denture for the abused tissue.
The lingual extension of a lower denture is limited by all of the following except
1. Modiolus
2. Mylohyoid muscle
3. Origin of genioglossus
4. Sublingual salivary glands
The lingual extension of a lower denture is limited by the action of modiolus.
Orientation records are best transferred by
1. Gothic arch tracing
2. Face-bow record
3. Dual impression technique
4. Any of the above
Prosthodontics
Answer: 2
Orientation records are best transferred by face-bow record.
The retromolar pad contains all of the following, except fibres of the
1 superior constrictor muscle
2 buccinator muscle
3 temporal tendon
4 rnasseter muscle
Prosthodontics
Answer: 4
Explanation: The retromolar pad is an important anatomical
landmark in denture fabrication and contains fibers from the superior
constrictor muscle, buccinator muscle, and temporal tendon. However, it does not
contain fibers from the masseter muscle, which is located more anteriorly and
plays a different role in mastication.
The anatomic landmarks used to establish the posterior extent of the upper complete denture
1. Petrygomaxillary notch and fovea palatine
2. Pterygopalatine fissure and anterior border of the tuberosity
3. Posterior nasal spine and the palatine bone
4. Posterior nasal spine and the posterior border of the tuberosity
Prosthodontics
Answer: 1
The anatomic landmarks used to establish the posterior extent of the upper complete denture are the pterygomaxillary notch and fovea palatine.