b Resistance c Retention d Convenience 6 Of the following the principal

B resistance c retention d convenience 6 of the

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b- Resistance. c- Retention. d- Convenience. 6. Of the following, the principal objective of interproximal wedging when placing a restoration is to ----------------------. a- Obtain the desired separation of the teeth. b- Mark the gingival extent of the restoration. c- Control gingival hemorrhage. d- Depress the gingival tissue. 7. The proper position for dental assistant at the chair side of right handed operator to assure visibility and accessibility to the operating field is at the -------------- O clock position and ----------------- the operator. a- 11; the same height as. b- 3 ; approximately 4 inches higher than. c- 11 ; approximately 4 inches higher than. d- 10 , approximately 3 inches higher than. 8. If acidogenic bacteria are to produce caries, it s required that they --- --------------------------. a- Are anaerobic. b- Produce phosphoric acid. c- Colonize on the tooth surface. d- All the above. 9. The most frequent complaint of pain after placement of an amalgam restoration is related to ------------------------. a- Cold. b- Heat. c- Sweets. d- Galvanic shock. PDF created with pdfFactory Pro trial version
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10. Of the following materials, the one most likely to cause an adverse pulpal reaction when placed directly in a deep cavity preparation is -------------------------. a- Silver amalgam. b- Silicate cement. c- Calcium hydroxide. d- Zinc oxide-eugenol. 11. A composite resin, compared with poly ( methyl methacrylate ) has ------------------------. a- Lower coefficient of thermal expansion. b- Greater compressive strength.
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  • Spring '20
  • Oral hygiene, dental plaque, Dental caries, c- Rubber dam

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