Reference List

  • Oral Health Education Unit Department of Health

    Available at: http://www.toothclub.gov.hk (Accessed: 17 November 2013).

  • Invisalign - Teeth straightening with clear, nearly invisible braces

    Available at: http://www.invisalign.com.hk (Accessed: 17 November 2013).

  • Welcome to Nobel Biocare - A world leader in innovative restorative and esthetic dental solutions

    Available at: http://www.nobelbiocare.com (Accessed: 17 November 2013).

  • Pamphlet of Dentsply Friadent