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Caries Process and Prevention Strategies: Epidemiology


Edward Lo, BDS, MDS, PhD, FHKAM

Credit Hours:

1 Hour(s)


This course is part 1 of a 10-part series entitled Caries Process and Prevention Strategies. Oral epidemiology is the area of public health that deals with the distribution and the impact of oral disease on the human population. In this c...

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This course is part 1 of a 10-part series entitled Caries Process and Prevention Strategies. Oral epidemiology is the area of public health that deals with the distribution and the impact of oral disease on the human population. In this course, emphasis is placed on the relevance of epidemiology to clinical practice and information about the prevalence, incidence and trends of dental caries in the United States is presented. The term DMF (decayed, missing, and filled teeth) is introduced, along with variations and limitations of the DMF index, and an explanation of how to calculate DMF scores.

  • Intended Audience:

    Dentists, Dental Hygienists, Dental Assistants, Dental Students, Dental Hygiene Students, Dental Assisting Students

  • Date Course Online:

    Dec 9, 2010

  • Last Revision Date:

    Oct 8, 2021

  • Course Expiration Date:

    Oct 7, 2024

  • Cost:


  • Method:


  • AGD Subject Code(s):


Learning Objectives

Upon completion of this course, the dental professional should be able to:

  • Discuss the need for epidemiological studies.
  • Apply the results of oral epidemiology studies to clinical practice.
  • Be familiar with the prevalence, incidence, and trends of dental caries in the United States.
  • Describe the value of the DMF index in measuring oral disease.
  • Use the DMF index to measure the prevalence of dental caries.
  • Understand the results of the NHANES surveys that are related to dental caries.
  • Identify the factors that may or may not affect the DMF scores in adults.
  • Calculate a DMFT, DMFS, dmft or dmfs index score from a patient tooth charting.


  • P&G is providing these resource materials to dental professionals. We do not own this content nor are we responsible for any material herein.
  • Participants must always be aware of the hazards of using limited knowledge in integrating new techniques or procedures into their practice.  Only sound evidence-based dentistry should be used in patient therapy.

Note:  Registration is required to take test.


Conflict of Interest Disclosure Statement

  • Dr. Lo was a member of the Advisory Board.

Video Course Presenter:Robert V. Faller

Edward Lo

Edward Lo


Dr. Lo is a professor and the Director of the Postgraduate Program in Dental Public Health in the Faculty of Dentistry at the University of Hong Kong.  He is a past president of the Southeast Asian Division and the Asian Pacific Region of th...

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Submission Information

Academy of General Dentistry (AGD) Submission For credit transfers to appear in your AGD account in real time, make sure to add your AGD membership number in the field provided on the “Share Your Test Score” page.

CE Broker For all states that use CE Broker for licensure, “proof of completions” are electronically reported the first of every month. If a course was taken in November, the “proof of completion” will be submitted the beginning of December.




Newly updated in 2018 by The Procter & Gamble Company, this course was first developed in conjunction with the American Dental Education Association (ADEA) in 2008. ADEA members are encouraged to go to ADEA weTeach® for a user-friendly gateway providing dental, allied dental and other health educators with access to high-quality teaching, learning and assessment resources. Health care faculty at any stage of their career will benefit from these “how-to” resources, and also gain the opportunity to share and publish educational best practices within MedEdPORTAL®. Visit:


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Concerns or complaints about a dental CE provider may be directed to the provider or to ADA CERP at

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Approved PACE Program Provider


Nationally Approved PACE Program Provider for FAGD/MAGD credit.

Approval does not imply acceptance by any regulatory authority or AGD endorsement.

8/1/2021 to 7/31/2027

Provider ID# 211886


AADH Approved Program Provider

Procter & Gamble is designated as an approved Provider by the American Academy of Dental Hygiene, Inc. #AADHPGC (January 1, 2022-December 31, 2023). Approval does not imply acceptance by a state or provincial Board of Dentistry. Licensee should maintain this document in the event of an audit.