MDS PREP
Closest speaking space in normal jaw relations is approximately
1. 0 to 1.5 mm
2. 1.5 to 3 mm
3. 3 to 6 mm
4. 6 to 9 mm
Prosthodontics
Answer: 2
Closest speaking space in normal jaw relations is approximately 1.5 to 3 mm.
The distal termination of the posterior lower teeth in complete denture should be at
1. Mesial end of the retromolar pad
2. Distal end of the retromolar pad
3. 1/3rd the distance of the retromolar pad
4. 2/3rd the distance of the retromolar pad
Prosthodontics
Answer: 1
The distal termination of the posterior lower teeth in complete denture should be at the mesial end of the retromolar pad.
The appropriate shape of a rest for a canine tooth is:
1) Full moon shaped
2) Half moon shaped
3) Half pear-shaped
4) None of the above
Prosthodontics Answer: 2
The half moon shape is ideal for canine rests as it provides adequate support and stability for the removable partial denture.
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.
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.
Chroma is
1. Intensity of colour
2. Translucency of enamel
3. Translucency of enamel and dentin
4. None of the above
Prosthodontics Answer: 1
Chroma refers to the purity or saturation of a
color, distinguishing it from its brightness (value) or hue. In dental
color-matching, chroma is an essential factor when selecting materials for
aesthetic restorations.
Effective alternation in the abutment with short clinical crowns for proper clasp retention can be achieved by
1) Proper guiding planes
2) Restoring with full crown
3) Altering the height of contour
4) All of the above
Prosthodontics
Answer: 2
When dealing with short clinical crowns in RPD abutment teeth, restoring the teeth with full crowns can provide additional retentive surfaces and support for the clasp. This can be particularly useful when the available undercuts are limited, thereby enhancing the overall stability and retention of the prosthesis.
The precision attachment which derives its retention from within the root, in
which a female sleeve is cemented in the root and the male portion is a nylon
post and ball head, is the
1. Zest anchor
2. Ackermann joint
3. Doder attachment
4. Quinlivan attachment
Prosthodontics
Answer: 1
Explanation: The Zest anchor is a type of precision attachment used in dental prosthetics that provides a secure connection between the prosthesis and the remaining tooth structure. It utilizes a female component cemented into the root and a male component that fits into it, allowing for a stable and retentive connection. The other options do not describe this specific mechanism.<br />