MDS PREP
The pathognomonic feature of chronic apical abscess is
1) Swelling and continuous pain
2) Tenderness to palpation and percussion
3) Increased response to vitality tests
4) None of the above
Endodontics
Answer: 4
Initial threshold of the electric test in a traumatic tooth
1) Is to establish base line of the physical status of the pulp
2) Is positive in healthy pulp
3) Is negative in root canal tooth
4) Is repeated after 30 days
Endodontics
Answer: 1
The teeth that are more prone to perforation by slight mesial and distal deviation of a bur are
1) Mandibular incisors & maxillary first premolars
2) Maxillary first premolars & mandibular molar
3) Maxillary incisors & mandibular molars
4) Maxillary molar & mandibular first premolar
Endodontics
Answer: 1
The principal cone of gutta-percha used for condensation should
1) Fit exactly at apex
2) Have a definite apical seal
3) Fit loosely in the canal
4) Be 2 mm from the apex
Endodontics
Answer: 2
Which of the following area of root fracture is least conducive to a favourable prognosis?
1. Apical third
2. Middle third
3. Cervical third
4. Prognosis is equal in all cases provided the tooth remains vital
Endodontics
Answer: 3
Obturation of root canal should achieve
1. Tug - back
2. Hermetic seal
3. Fluid - free seal
4. All of the above
Endodontics
Answer: 4
Phoenix abscess is
1. Reversible pulpitis
2. Acute apical periodontitis
3. Acute exacerbation of an existing chronic inflammation
4. Chronic abscess
Endodontics
Answer: 3
In walking bleach procedure which of the following technique are used
1. Sodium perborate
2. HCI
3. Carbamide peroxide
4. EDTA