Which material is the most difficult to remove from the patients mouth ?

Related Mcqs:

1. The best way to remove a hydrocolloid impression from the patient’s mouth is____________?

   A. Slight rocking of the impression to disengage it from the undercut
   B. Wetting the periphery of the impression with moist cotton to break the peripheral seal
   C. Sudden jerking of the impression to prevent tearing
   D. Supporting the impression along with the tray to prevent disengaging of the tray alone

2. Which of the following impression materials is easy to pour and difficult to remove the stone cast from the impression ?

   A. Addition polysilicone
   B. Condensation polysilicone
   C. Polyether
   D. Polysulfide

3. Minimum flow of Type-I impression compound at mouth temperature is___________________?

   A. 4%
   B. 6%
   C. 8%
   D. 10%

4. The impression for a diagnostic cast of a partial edentulous mouth should be taken in_______________?

   A. Impression wax
   B. Modelling compound
   C. Hydro-colloid
   D. Hydro cal

5. Which of the following cements is contraindicated in mouth breathers_______________?

   A. Silicate
   B. ASPA
   C. Polycarboxylate
   D. Zinc phosphate

6. Mouth temperature waxes are_______________?

   A. Iowa wax
   B. Modeling wax
   C. Green stick wax
   D. None of the above

7. Alginate impression material is similar to Agar-agar impression material in the following respect________________?

   A. Gelation increase in both on increase in temperature
   B. Mixing time is increased to reduce the setting time
   C. Deformation during removal of impression occurs due to distortion of gel fibers
   D. Both can be re-used for fresh impressions

8. The range of level of fluoride secreted by the glands into the mouth is_____________?

   A. 0.004-0.005 ppm
   B. 0.006-0.007 ppm
   C. 0.007-0.005 ppm
   D. 0.007-0.08 ppm

9. The antibiotic of choice in patients sensitive to penicillin is___________?

   A. Erythromycin
   B. Streptomycin
   C. Tetracycline
   D. Chloramphenicol

10. A 40 year old woman report with the complaint of burning sensation in the mouth. Clinical examination reveals lesions consisting of radiating white striations in a retiform arrangement affecting buccal mucosa, tongue, lips & gingiva bilaterally. An incisional biopsy is suggestive of lichen planus. The following are different clinical forms of lichen planus except:

    A. Atrophic lichen planus
    B. Hypertrophic lichen planus
    C. bullous lichen planus
    D. Verrucous lichen planus