MDS PREP
Because of the great length of this clasp it must be designed with additional sup port, usually in the form of an auxiliary bracing arm. Which clasp is this?
1. Ring clasp
2, Combination clasp
3. Fish hook clasp
4. Multiple circlet clasp
Prosthodontics
Answer: 1
A ring clasp is a type of clasp used in removable partial dentures that encircles the abutment tooth. Due to its length and the potential for movement, it often requires additional support, typically provided by an auxiliary bracing arm, to ensure stability and retention of the prosthesis. This design helps distribute forces more evenly and prevents dislodgment during function.
Vomiting during impression making procedures may be prevented by
1. Sedating the patient
2. Injecting local anaesthetic
3. Asking patient to come on empty stomach
4. Change the impression material
Prosthodontics
Answer: 2
Vomiting during impression-making procedures may be prevented by injecting local anaesthetic.
Which of the following is true regarding immediate complete dentures?
1. Dentures should be relined or remade in 6-12 months
2. The patient should not wear the dentures for the first 24 hours after
extraction
3. Anterior try in should be done
4. Teeth should always be placed in the same position as natural teeth
Prosthodontics
Answer: 1
Explanation: Immediate complete dentures often require relining or remaking due
to the significant bone and tissue changes that occur during the initial healing
phase after tooth extraction. The reline helps to adapt the denture to the new
contours of the alveolar ridge, providing a more stable and comfortable fit.
Internal resorption in a tooth is seen as
1. Calcium hydroxide pulpotomy
2. Replacement resorption
3. Non-proliferation lesion
4. Desensitizing tooth
Prosthodontics
Answer: 3
Internal resorption in a tooth is seen as a non-proliferation lesion.
Which of the following is likely to occur if the VDO is increased in a cornplete denture patient?
1. Loss of lip fullness
2. Decreased nose-chin distance
3. Clicking of teeth
4. Loss of tone of facial tissues
Prosthodontics
Answer: 3
Which of the following is likely to occur if the VDO is increased in a complete denture patient: clicking of teeth.
Selective pressure impression technique indicated in
1. Firm healthy mucosal covering over the ridge
2. Flabby ridges
3. Knife edge with movable mucosa
4. When sharp bony spicules are present in the ridge
Prosthodontics
Answer: 1
Selective pressure impression technique is indicated in firm healthy mucosal covering over the ridge.
From the diagnostic casts, all of the following information can be gained except?
1. Gingival tissue contour and pocket depths
2. Axial inclination of the tooth
3. Arch form and contour
4. Occlusal interference
Prosthodontics
Answer: 1
From the diagnostic casts, all of the following information can be gained except gingival tissue contour and pocket depths.
Oral examination of an edentulous patient should include digital palpation. Why?
1. The arch form is more accurately evaluated
2. Undercut areas may be better evaluated
3. The ridge relationship may be better evaluated
4. None of the above
Prosthodontics
Answer: 2
Oral examination of an edentulous patient should include digital palpation to evaluate undercut areas better.