Current applications of nanotechnology in dentistry: a review

Self-Instruction Exercise No. 354
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Exercise No. 354
Subject Code: 013
Microbiology

The 15 questions for this exercise are based on the article, “Current applications of nanotechnology in dentistry: a review”, on pages 72-77. This exercise was developed by Anthony S. Carroccia, DDS, MAGD, ABGD, in association with the General Dentistry Self-Instruction committee.

Reading the article and completing the exercise will enable the reader to:

  • understand current concepts of nanotechnology;
  • recognize the uses of nanotechnology in dentistry; and
  • identify the applications of projected uses of nanotechnology.

Answers for this exercise must be received by June 30, 2015.
  1. All of the following are drug delivery devices except one. Which is the exception?

    A. nanotubes
    B. gas nanoparticles
    C. magnetic nanoparticles
    D. lipid nanoparticles

  2. Toothpastes containing nanosized calcium carbonate particles have shown ________% of mineral gain on remineralization.

    A. 4.88
    B. 8.84
    C. 48.8
    D. 88.4

  3. Nanostructured lipid carriers have all of the following properties except one. Which is the exception?

    A. reduced toxicity
    B. increased penetrability
    C. reduced shelf life
    D. increased stability

  4. Nanotechnology illustrates nanodimensions in which range?

    A. 1-100 nm
    B. 100-1000 nm
    C. 1-100 mm
    D. 100-1000 mm

  5. Current nanotechnological in vivo diagnostic devices include all of the following except one. Which is the exception?

    A. nanotubual vortices
    B. special sensor nanobots
    C. nanopunches
    D. quantum dots

  6. Silver nanoparticles possess a narrow spectrum of antibiotic activity. Silver nanoparticles show a lower propensity to induce microbial resistance.

    A. Both statements are true.
    B. The first statement is true; the second is false.
    C. The first statement is false; the second is true.
    D. Both statements are false.

  7. Nanodots enhanced osteoblast cell population by ______%.

    A. 44
    B. 50
    C. 57
    D. 73

  8. Highly sensitive diagnostic techniques involving better revelation of auto-antibodies, dysplastic cells, and salivary biomarkers are required for apt diagnosis and early treatment. An automated nanoelectromechanical system enables the detection of oral cancer salivary biomarkers.

    A. Both statements are true.
    B. The first statement is true; the second is false.
    C. The first statement is false; the second is true.
    D. Both statements are false.

  9. Mouthwashes that contain nanocrystals help reduce implant surface roughness in which of the following ways?

    A. remove hydroxyapatite
    B. deposit hydroxyapatite
    C. increase oxidation
    D. increase reduction

  10. Nanohydroxyapatite composite bone graft scaffolds have all of the following advantages except one. Which is the exception?

    A. highly biocompatible
    B. superior mechanical properties
    C. better cellular responses
    D. increased intrabony defects

  11. All of the following popular nanohydroxyapatite bone grafts are available except one. Which is the exception?

    A. crystalline alloplast forms
    B. crystalline allograft forms
    C. chitosan-associated forms
    D. titanium-reinforced forms

  12. The inner layer of a 3-layered guided tissue regeneration has ______% of nanocarbonated hydroxyapatite/collagen/poly (lactic-co-glycolic acid) porous membrane.

    A. 2
    B. 4
    C. 6
    D. 8

  13. _______________ was defined as the science that deals with the effects of engineered nanodevices and nanostructures in living organisms.

    A. Ecotoxicology
    B. Nanotoxicology
    C. Nanotechnology
    D. Ecotechnology

  14. The nanotization of particles makes graft material more resistant to degradation and longer lasting than the conventional prototype. What is the length of the conventional prototype degradation?

    A. 4-6 weeks
    B. 8-10 weeks
    C. 12-14 weeks
    D. 14-16 weeks

  15. The incorporation of nanofiller particles in composite resins shows all of the following properties except one. Which is the exception?

    A. reduced polymerization shrinkage
    B. enhanced polishing ability
    C. reduced wear resistance
    D. reduced thermal expansion

Evaluation
Please respond to the statements below, using the following scale:
1 Poor; 2 Below average; 3 Average; 4 Above average; 5 Excellent
Practicality of the content 1 2 3 4 5
Benefit to your clinical practice 1 2 3 4 5
Quality of illustrations 1 2 3 4 5
Clarity of objectives 1 2 3 4 5
Clarity of exercise questions 1 2 3 4 5
Relevance of exercise questions 1 2 3 4 5
 
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