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True Function Laboratory, Inc. (TFL) prefers customers pay their account balance with a check. However, a valid credit card (Visa or MasterCard) is required when opening an account.

Pay by check: TFL will send an invoice with every case and mail a statement at the end of every month. The statement balance is due upon receipt (usually the 1st-3rd of the following month). The account becomes past due on the 25th of the month. If the account balance has not been paid in full by the 25th, the card on file will be charged for any unpaid invoices. If the card is declined, the office will be notified, and a prompt payment is expected. If payment isn’t received by the end of the month, a 2% finance charge will be assessed on the unpaid past-due amount.

Pay by credit card: Automatically run card at the end of the month for my statement balance. If the card is declined, the office will be notified, and a prompt payment is expected. If payment isn’t received by the end of the next month, a 2% finance charge will be assessed on the unpaid past-due amount.
By submitting this form, I hereby certify the information provided in this application is true, correct, and complete. I agree to be held financially responsible for any and all charges incurred at True Function Laboratory, Inc. I agree to promptly notify True Function Laboratory, Inc. of any changes in the information provided and agree to the terms noted above. I authorize True Function Laboratory, Inc. to charge my credit card per my selection in the Payment Choice area above and/or for any unpaid dental laboratory services for the previous month.

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Click on a button below to browse our True Splint and True Sleep Catalogs on PDF:

TrueSplint Catalog
TrueSleep Catalog
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Print a UPS Label and send your case
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Connect with us on all major digital scanning platforms by searching True Function Laboratory or Di*****@**********on.com. If using Itero use code 13748.
1.
Complete the
New Account Form
True Function Laboratory, Inc. (TFL) prefers customers pay their account balance with a check. However, a valid credit card (Visa or MasterCard) is required when opening an account.

Pay by check: TFL will send an invoice with every case and mail a statement at the end of every month. The statement balance is due upon receipt (usually the 1st-3rd of the following month). The account becomes past due on the 25th of the month. If the account balance has not been paid in full by the 25th, the card on file will be charged for any unpaid invoices. If the card is declined, the office will be notified, and a prompt payment is expected. If payment isn’t received by the end of the month, a 2% finance charge will be assessed on the unpaid past-due amount.

Pay by credit card: Automatically run card at the end of the month for my statement balance. If the card is declined, the office will be notified, and a prompt payment is expected. If payment isn’t received by the end of the next month, a 2% finance charge will be assessed on the unpaid past-due amount.
By submitting this form, I hereby certify the information provided in this application is true, correct, and complete. I agree to be held financially responsible for any and all charges incurred at True Function Laboratory, Inc. I agree to promptly notify True Function Laboratory, Inc. of any changes in the information provided and agree to the terms noted above. I authorize True Function Laboratory, Inc. to charge my credit card per my selection in the Payment Choice area above and/or for any unpaid dental laboratory services for the previous month.
2.
Pick Your
Appliance
True Splint Catalog
True Sleep Catalog
3.
Send a
Case
Send models or impressions
Print a UPS Label and send your case
Send Scans
Connect with us on all major digital scanning platforms by searching True Function Laboratory or Di*****@**********on.com. If using Itero use code 13748.

Our Dental Lab

7851 University Ave Suite 103
La Mesa, CA 91942

True Function

Appliances

FDA Registered Lab

All appliances are prescription only and are customized by True Function Lab to dentist specific instructions.

© Copyright 2025  True Function Laboratory, Inc

*At True Function, we pride ourselves on having one of, if not the quickest turnaround times in the industry, which allows your patients to begin treatment sooner.

As part of our commitment to providing the best service and quality to our valued customers, please be aware that our device fabrication takes 7 business days to complete assuming we have everything needed to begin fabricating the best fitting device.  Any communication delays such as, doctor requests call, bite issues, distortion issues, retention concerns, missing information or physical records, etc. will result in additional in lab time. 

Thank you for your continued support as we strive to ensure top-notch quality in everything we do. If you have any questions or need further assistance, please do not hesitate to contact our customer service team at 877-887-8522 or in**@**********on.com.

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