I have researched this extensively. unfortunately the coverage is different in certain areas in ontario.

Ministry of Community and Social Services - (ONTARIO WORKS)

http://www.mcss.gov.on.ca/en/mcss/programs/social/ow/help/benefits/health_benefits.aspx <-- (Specifies Children Only)

Ministry of Community and Social Services - (ODSP) <-- (Adults & children covered if disabled)

http://www.mcss.gov.on.ca/en/mcss/programs/social/odsp/income_support/odsp_dental.aspx

Healthy Smiles Ontario <-- (Children Only)

http://www.health.gov.on.ca/en/public/programs/dental/

Dental Services for low-income families - Ontario <-- (Seniors & Children Only)

http://www.fptdwg.ca/English/e-on.html

Ontario Works TORONTO Dental Coverage <-- (Adults covered on Discretionary basis)

http://www1.toronto.ca/wps/portal/contentonly?vgnextoid=a089707b1a280410VgnVCM10000071d60f89RCRD&vgnextchannel=36b2d08099380410VgnVCM10000071d60f89RCRD

and

http://www1.toronto.ca/wps/portal/contentonly?vgnextoid=7c86045b4f870410VgnVCM10000071d60f89RCRD

and

Toronto Sun Newspaper Article dated JAN 2015

http://www.torontosun.com/2015/01/24/dental-care-for-the-welfare-recipients-needs-work

Ontario Works DURHAM ONTARIO Dental Coverage <-- (Adults covered on Discretionary basis)

https://www.durham.ca/departments/health/dental/adultOnWorksFeeGuide.pdf

Ontario Works LAMBTON ONTARIO Dental Coverage <-- (Adults covered on Discretionary basis)

https://lambtonhealth.on.ca/health-information/dental-health/child-dental-programs/ontario-works-ow/ontario-works-lambton-dental-plan

Ontario Works LONDON ONTARIO Dental Coverage <-- (Adults on OW not Covered)

https://www.healthunit.com/ontario-works

Ontario Works WATERLOO ONTARIO Dental Coverage <-- (Adults Covered)

http://chd.region.waterloo.on.ca/en/healthyLivingHealthProtection/resources/OW_DentalBenefits.pdf

Ontario Works HAMILTON ONTARIO Dental Coverage <-- (Adults covered on Discretionary basis)

http://www.hamilton.ca/HealthandSocialServices/SocialServices/SupportPrograms/dentalServices.htm

Some Current Supporting News Articles

Dental care for welfare recipients needs work (Toronto Sun) http://www.torontosun.com/2015/01/24/dental-care-for-the-welfare-recipients-needs-work

It’s time for all Ontarians to have access to dental care http://www.guelphmercury.com/opinion-story/4546448-it-s-time-for-all-ontarians-to-have-access-to-dental-care/

Lack of dental coverage a persistent pain | Chatham Daily News http://www.chathamdailynews.ca/2014/08/12/still-shortcomings-in-adult-dental-treatment

Getting to the root of dental care at Port Hope clinic http://www.northumberlandnews.com/news-story/5459505-getting-to-the-root-of-dental-care-at-port-hope-clinic/

So you see, The situation and coverage varies and shows its constrictions.

A person should not be fully covered under a dental program if:

• They only have a physical and/or mental impairment (ODSP)

• They are under 18 years of age (ONTARIO WORKS)

Infection is a serious issue and can be life threatening. it can affect your organs and even your Brain.