Regarding health insurance that would be a qualified medical expense, 26 U.S. Code § 223(d)(2)(C)(iv) says:
(iv)in the case of an account beneficiary who has attained the age specified in section 1811 of the Social Security Act, any health insurance other than a medicare supplemental policy (as defined in section 1882 of the Social Security Act).
I see no reason that dental insurance would not be included as a member of "any healthcare insurance."
