An NTI TSS (Nociceptive Trigeminal Inhibition Tension Suppression System) is a device that was originally designed to prevent headache and migraine caused by teeth clenching and grinding. The objective of an NTI is to relax the muscles involved in clenching and teeth grinding. Thus, preventing the intensity of muscular parafunction, which aids in preventing jaw facial muscle soreness, trauma inside the side of the cheeks from clenching, teeth abrasion, and TMJ pain.
The NTI TSS device is an anterior bite stop, worn over the two front teeth at night to prevent contact of the canines and molars. An NTI pressure on the front teeth reduces the intensity of the involuntary contractions that people with bruxism suffer from. In other words, with the NTI night guard, you should not be able to clench as hard as you normally do.
Why do we choose an NTI over the Traditional Occlusal Splint and what is the difference?
In order to deal with parafunctional jaw muscle activity (the most destructive of which is jaw clenching) is to provide alterations of the biting surfaces of the teeth via occlusal night gaurds.
1)A full coverage splint, usually a thickness which mimics the intended space between the teeth when the jaw musculature is supposed to be at rest, provides both canine and posterior teeth contact, thereby allowing for perpetuation of parafunctional (nighttime clenching) muscular activity.
2) By increasing the thickness of the splint, clenching intensity may be altered, depending on the amount of pressure applied to particular teeth. If contacts are "heavier" in the molar region, clenching intensity can be suppressed slightly. If contacting is prevalent in the canine region, clenching is reflexive and perpetuates.
3) An anterior bite plane reduces parafunctional intensity of the masseters (the muscles on the sides of your jaw, primarily involved in chewing, not clenching), and to a degree, the lateral pterygoids (the tiny muscles at your jaw joints that open your jaw), but still provides canine contact for temporalis clenching.
A traditional dental mouthpiece, or splint, reduces the resistance to side-to-side movement thereby reducing the effort and resultant strain to the jaw joint and sinuses (so long as clenching intensity isn't too intense). However, the same splint also provides an ideal clenching surface, where maximum clenching intensity may increase and/or allow jaw joint problems to perpetuate.
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).