Aren't dental expenses deducted from taxes ?Can insurance premiums not be deducted from taxes?

Medical insurance premiums and dental expenses are deductible as medical expenses. But only medical expenses in excess of 7.5% of your Adjusted Gross Income (AGI) are deductible. (Enter the full amount that you paid in TurboTax. TurboTax will subtract 7.5% of your AGI.) In addition, medical expenses are an itemized deduction. They will not reduce your tax or increase your refund unless your total itemized deductions are more than your standard deduction.

Deductions are subtracted from your taxable income before the tax is calculated. They are not subtracted directly from your tax.