c Lower polymerization shrinkage d All of the above 12 The use of composite

C lower polymerization shrinkage d all of the above

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c- Lower polymerization shrinkage. d- All of the above. 12. The use of composite resin for class I restoration is not generally recommended because it s clinical performance is inferior to amalgam with respect to ------------------------. a- Creep. b- Fracture. c- Occlusal wear. d- Marginal breakdown. 13. The most effective means of providing maximum protection against caries activity for a great number of people through ---------- ------------------. a- Plaque control programs. b- School dental health programs. c- Meticulous tooth brushing and flossing. d- Fluoridation of community s drinking water. 14. Untreated dental caries may cause -------------------------. a- Pain. b- Gingivitis. c- Dietary deficiency. PDF created with pdfFactory Pro trial version
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d- All of the above. 15. The permanent teeth which exhibit the highest incidence of dental carious involvement are the ----------------------. a- Maxillary 1 st molar. b- Maxillary 2 nd premolar. c- Mandibular central incisors. d- Mandibular 2 nd premolar. 16. Chemicomechanical loss of tooth tissue is termed ----------------. a- Erosion. b- Abrasion. c- Attrition. d- Decalcification. 17. When odontoplasts are destroyed, new odontoblasts are derived from -----------------------. a- Histocytes. b- Neural crest cells. c- Undifferentiated cells. d- Mitosis of existing odontoblasts in the pulp. 18. Which of the following may predispose to gingival enlargement --- --------------------------. a- Inflammation. b- Phenytoin therapy. c- Pregnancy. d- All the above. 19. Erosion commonly occurs on the -------------------------.
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  • Spring '20
  • Oral hygiene, dental plaque, Dental caries, c- Rubber dam

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