Warranty & Disclaimer

APPENDIX 6: True Function Limited Warranty and Disclaimer

True Function Laboratory guarantees that our appliances are constructed to your prescription specifications, will fit the working model provided or the working model created from the impression provided, and be free of defects in materials and craftsmanship.

Due to factors out of our control, such as distorted models or impressions, we can only guarantee our fabrication technique and the materials used. Warranty coverage is only effective with the receipt of the original appliance, original models/and or impressions, and bite registration (if used in original manufacture of the device). All returns will be reviewed for warranty coverage upon receipt of the appliance along with the original model and/or impression.

True Function will evaluate all returns on the following criteria:

  • Receipt of broken or defective appliance without original model/impression. Any appliance that is returned without the original model will not be covered.
  • Assessment of defective material.
  • Assessment of defects in workmanship.

If a new appliance is ordered during the evaluation of the defective appliance or while being worn by the patient until the new/repaired one is delivered, there will be a full charge for the replacement appliance.

True Function Laboratory, Inc. shall not be liable for any defects that are caused by neglect, misuse, or mistreatment of its products by any third party or for any product that has been altered or modified in any way by any entity other than True Function Laboratory, Inc.

If any of our products fail to conform to our warranty, True Function Laboratory, Inc. will repair or replace the product, at the lab’s discretion. Repaired and replacement products will be covered for the remainder of the original warranty period.

The following chart gives the specific warranty period for individual appliances:

Acrylic Night Guard* 24 months
Dorsal Fin 24 months
Dream TAP 36 months
Dual Laminate Night Guard* 6 months
EMA 12 months
Essix Retainer 3 months
Oasys** 24 months
Oasys Hinge** 24 months
Orthodontic Expanders Active 3 months
Panthera 60 months
Passive Orthodontic Retainer (Except Essix) 12 months
Premium Night Guard 24 months
Silencer/ Not including Hinge 12 months
Standard Night Guard 6 months
Tap 3 36 months
TMJ Splints* 6 months
TrueHerbst 24 months

* Warranty excludes the occlusal surface due to forces out of our control.
** Warranty does not include locking mechanism

These warranties apply only when the device breaks under normal use.