NTI stands for Nociceptive Trigeminal Inhibition. This device provides a way to suppress the elevating muscles of mastication thereby reducing/increasing the natural reflexes of the jaw. This tension suppression system uses the body's natural reflex protection when being used during waking hours.
At night it prevents and reduces the muscular component of migraine, chronic headache and jaw disorders by preventing parafunctional contacting of the canine and molar teeth. It represents a major improvement over splints and night guards in treating and preventing clenching, grinding, bruxing, stiff neck, tooth sensitivity, tension headaches and TMD (Tempromandibular Muscle Disorders).

The device is a small, clear, taco shell-shaped appliance that fits over the upper two front teeth. Attached on the incisal edges of the taco shell is a bump or a bar that extends anteriorally and posteriorally to provide the point stop.

The NTI provides for lower incisor contact to just prior to posterior occluding. This is condusive to ideal condylar seating or the best condyle location during closure.

It's a relatively simple concept. To be successful with the NTI, you don't have to take a lot of courses or learn a lot of theory. It's based on established medical, physiologic activity.

The NTI-tss device (above) reduces clenching intensity by exploiting the mechanisms of the incisor teeth and by preventing the engagement of the canine and molar teeth when the jaw is centered (A), and when it is in excursive positions (B).


For general nighttime use. The Standard is typically altered by the practitioner for proper vertical dimension and horizontal orientation... and often times resembles the reduced vertical NTI.
Reduced Vertical

The Discluding Element has been reduced in vertical dimension, as well as shortened labially. The labial wall has also been reduced in thickness. Primarily intended for the maxilla, although not exclusively.


Provides additional retention. For example, when the incisors have been significantly shortened (or are too "flat"), or when an incisor is missing.


The Discluding Element has been reduced in vertical dimension, extended labially, and is tapered to the lateral borders of the device. Primarily intended for the mandible, although not exclusively.


For the migraine patient who requires reduction of daytime activity. See:
Protocol for Migraine Therapy

Universal / "Slidebar"

Can be used as a Daytime device, or when the Standard device's Discluding Element is too big. In the presence of destructive grinding, a "slidebar" can be made over the opposing incisors.