If i had to pull out all my upper teeth and took out a loan for dental implants. Can i file for that on my taxes?

You can only deduct as a medical expense what you paid the dentist in the year you paid them. You can only deduct that expense if you itemize. You can deduct a total of medical expenses greater than 7.5 percent of your AGI. 

Yes those dental procedures are a valid expense.  You can enter those payments you made with out of pocket funds that were not reimbursed.

However, if you took out a loan to pay these procedures you can enter the loan amount when the loan was provided.  If you do enter a loan amount as a medical deduction you cannot enter any loan payments as a deduction.

Health care insurance premiums, including dental and vision insurance premiums, and other medical expenses that you paid with out of pocket funds and were not reimbursed are an eligible medical expense that you can deduct using Schedule A for itemized deductions. However, only your total medical expenses that are greater than 7.5% of your Adjusted Gross Income (AGI) can be deducted. Your total itemized deductions reported on Form 1040 Schedule A must be greater than the standard deduction for your filing status to have any tax benefit.

Standard deductions for 2024

Single - $14,600 add $1,950 if age 65 or older
Married Filing Separately - $14,600 add $1,550 if age 65 or older
Married Filing Jointly - $29,200 add $1,550 for each spouse age 65 or older
Head of Household - $21,900 add $1,950 if age 65 or older

To enter your medical expenses -

Click on Federal Taxes (Personal using Home and Business)
Click on Deductions and Credits
Click on I'll choose what I work on (if shown)
Scroll down to Medical
On Medical Expenses, click the start or update button

Or enter medical expenses in the Search box located in the upper right of the program screen. Click on Jump to medical expenses

Yes.

You can enter the total as Medical Expenses, the fact that it was paid for with a loan is of no matter. 

Enter under 

Deductions & Credits

Medical

Medical Expenses