MDS PREP
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.
Which of the following is NOT a component of a dental surveyor?
1) Base
2) Vertical arm
3) Toothbrush holder
4) Surveying arm
Prosthodontics
Answer: 3
A dental surveyor consists of components like a base, vertical arm, horizontal arm, and surveying arm, but it does not include a toothbrush holder.
Consider the following factors regarding the placement of RPD which of the following determine the path of placement?
1) Guiding planes
2) Retentive areas
3) Interferences
4) All of the above
Prosthodontics
Answer: 4
The path of placement of an RPD is influenced by various factors such as guiding planes, which dictate the direction of insertion and removal; retentive areas, which provide the necessary grip for the denture; and interferences, which can hinder the proper seating of the denture. All these factors are important to ensure a stable and functional RPD that is comfortable for the patient.
What is the purpose of using undercut gauges in dental surveying?
1) To identify the amount of retentive undercut
2) To measure the size of the cast
3) To contour wax patterns
4) To clean the surveyor
Prosthodontics
Answer: 1
Undercut gauges are specifically designed to measure the amount of retentive undercut available on the cast.
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).
The secondary peripheral seal in mandibular denture is provided by
1. Buccal shelf
2. Anterior lingual border
3. Retromolar pad
4. Crest of the ridge
Prosthodontics
Answer: 2
The secondary peripheral seal in mandibular denture is provided by the anterior lingual border.
Denture bearing area of the ridge is
1. Non keratinised
2. Keratinised
3. Para keratinised
4. None of the above
Prosthodontics
Answer: 2
The denture-bearing area of the ridge is keratinised.
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.