참고문헌
- http://www.oramd.com/smoking-and-gum-disease.htm
- http://www.webmd.com/oral-health/guide/smokingoral-health
- http://www.cdc.gov/OralHealth/topics/periodontaldisease.htm
- http://www.sciencealert.com.au/news/20080105-17254-2.html
- http://www.learn-how-to-quit-smoking.com/smokinggum-disease.htm
- http://www.medicinenet.com/oral- health- and- bone-disease/glossary.htm
- http://eoralhealth.com/
- http://www.dentalgentlecare.com/periodontaldisease.htm
- http://dentistry.about.com/od/dentalhealth/a/smoking.htm
- http://www.healthline.com/sw/gsa-smoking-andrespiratory-diseases
- http://www.montefiore.org/healthlibrary/centers/cancer/smokres/
- http://www.waterpik.com/oral-health/plaque-gumdisease.html
- http://www.webmd.boots.com/oral-health/guide/smoking-oral-health
- http://www.seattle-dentist.com/Smoking-Periodontitis.htm
- http://www.perio.org/consumer/smoking.htm
- http://www.lib.uiowa.edu/hardin/md/smokingoral.html
- http://www.quittersguide.com/smoking-and-oraldiseases.shtml
- http://www.quitway.com/smoking- health- risks.html
- http://www.quittersguide.com/smoking-and-oraldiseases.shtml
- http://www.waterpik.com/oral-health/smoking.html