n. — Administration
a dental healthcare plan for children of low-income families offered by some provincial governments.
Type: 5. Frequency — Denticare plans are not exclusive to Canada (see Chart 1), yet the term is most frequent here. OED-3 (s.v. "Denticare") describes this term as "Chiefly N. Amer.", defines it as a "provincial government dental health plan" and considers it as specifically Canadian. While discussions around dental insurance plans date back to the 1940s-1970s, not all provinces offer them. Ontario, for instance, only recently introduced a denticare program (see the 2015 quotation).
See also COD-2, s.v. "denticare", which is marked "Cdn", ITP Nelson and Gage-5, both s.v. "denticare"; the latter two dictionaries do not mark the term as Canadian.
See also: medicare
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Chart 1: Internet Domain Search, 13 Jul. 2012