MDS PREP
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.
Which of the following factor(s) you would like to consider for constructing a CD for diabetic patient (any medically compromised person)
1. Maximum extension of the denture base within limits
2. Use of selective or non-pressure impression techniques
3. Narrow occlusal table
4. All of the above
Prosthodontics
Answer: 4
Which of the following factor(s) you would like to consider for constructing a CD for a diabetic patient: all of the above.
The thickness of the spacer used in spicial tray is
1. 2.5 mm
2. 2.0 mm
3. 1.5 mm
4. 1.0 mm
Prosthodontics
Answer: 2
The thickness of the spacer used in a special tray is 2.0 mm.
The function of posterior palatal seal (PPS) is
1. To aid in balanced occlusion
2. To aid in insertion and removal of complete denture
3. To ensure a complete seal thus helping in retention of a denture
4. Retention of mandibular denture by sealing its posterior margin
The function of the posterior palatal seal (PPS) is to ensure a complete seal thus helping in retention of a denture.
The massetric notch in distobuccal corners of the mandibular denture is due to
1. Action of buccinator on masseter
2. Action of masseter on buccinator
3. Action of palatoglossus on buccinator
4. Action of superior constrictor on masseter
Prosthodontics
Answer: 2
The massetric notch in the distobuccal corners of the mandibular denture is due to the action of masseter on buccinator.
Which of the following is true regarding clasp retention?
1. Cast gold clasps cannot engage greater depth of undercuts than cast
cobalt-chromium alloy clasps of equal dimensions
2. It does not depend on the material from which it is fabricated
3. A wrought clasp requires greater under cut than a cast clasp
4. A cast clasp requires greater undercut than a wrought wire clasp
Prosthodontics Answer: 3
Explanation: Wrought wire clasps are more flexible than cast clasps, allowing them to engage undercuts more effectively. However, they require a greater depth of undercut to achieve the same retention as cast clasps. This is because wrought wire clasps can flex and adapt to the contours of the tooth better than rigid cast clasps. The other statements are incorrect regarding the comparative abilities of clasp materials and their engagement with undercuts.
Retromolar pad
1. Should not be covered by low denture
2. Should be covered by lower denture
3. Has tendon of temporal muscle attached to it
4. All of the above
Prosthodontics
Answer: 2
The retromolar pad should be covered by the lower denture.
Benett movement is
1) Direct lateral side shift of the mandible that occurs simultaneously with lateral mandibular excursion
2) Direct medial side shift with medial mandibular excursion
3) Direct lateral side shift with medial mandibular excursion
4) None of the above
Prosthodontics
Answer: 1
The Bennet movement is a type of movement that occurs in the temporomandibular joint (TMJ) during the lateral excursion of the mandible, particularly when the mouth is open. It involves the sliding of the articular disk in a lateral direction within the joint space, which allows for the condyle to move smoothly along the articular eminence of the temporal bone. This movement is essential for the normal functioning of the TMJ during activities like chewing and speaking. It is the first type of movement to occur during lateral excursion and is crucial for maintaining the proper alignment of the TMJ components during side-to-side jaw motion.