Purchase terms and refunds

Updated October 16, 2026.

What you buy

A one-time payment of $249 USD gives you personal access to the current 937-question bank, explanations, practice modes, timed mock exams and performance by domain for 400 days from purchase. Payment is handled by Stripe, which acts as merchant of record for the sale and shows any applicable sales tax, VAT or GST before you pay. There is no subscription or automatic renewal.

You can use your access on multiple personal devices. Your purchase email contains an access link; you can request a new sign-in link in the app. Progress is stored separately in each browser. Keep access links private.

Content and affiliation

This is an independent educational resource. It is not affiliated with the American Board of Periodontology or the American Academy of Periodontology, does not contain recalled exam questions, and does not replace residency training or the literature. It is for exam preparation, not clinical decisions. We do not guarantee an exam result.

7-day refund

If the bank isn't for you, email hello@periodonticsqbank.com within 7 days of purchase with your purchase email and we will refund it in full. No reason needed. Your access ends when the refund is issued. This is separate from the pass-or-refund guarantee below.

Pass-or-refund guarantee

Answer at least 80% of the bank before sitting your exam. If you do not pass, email hello@periodonticsqbank.com within 60 days of receiving your result, with your purchase email, a screenshot of your progress, and your ABP result letter. You may redact unrelated personal information. We refund the QBank purchase; exam fees and training costs are not covered. These terms do not limit any applicable statutory rights.

Seller

Periodontics QBank is operated by Mark Erdmann, Calgary, Alberta, Canada. Contact: hello@periodonticsqbank.com. Stripe acts as merchant of record for payments.

Support

For access problems, suspected question errors or other refund requests, email hello@periodonticsqbank.com. Include your purchase email and, for content issues, the question identifier or a short description. Do not send patient information.