Frequently Asked Questions
What does "NTI" stand for?
Nociceptive (relating to the perception of things that could be harmful); Trigeminal (the nerve that controls the major muscle of mastication; Inhibition
No. Since the patient cannot wear the NTI-tss device while chewing food, the posterior alveolar structures receive regular stimulation every day, therefore, there is no opportunity for a functional adaptation of the occlusal scheme, that is supra-eruption of the teeth.. Research shows that alveolar bone requires at least 8 days of lack of stimulation before bone growth at the apex (supra-eruption) can initiate. As for anterior intrusion, the lack of continuous apical force does not provide adequate opportunity to intrude an incisor. However, Changes in the jaw relationship can be observed within 8 days (which is identified as an change in the occlusal scheme), and is a result of the normalization of the musculature.
No, the NTI device is retro-fitted over un-prepared teeth with cold-cure acrylic. The practitioner must relieve the internals to provide for a snap-in fit, without strain or pressure on the teeth. The patient must make a dedicated effort to remove the device. If the patient is able to remove the device without using their hands, then it should be re-lined or/and made to fit additional lateral teeth for added retention.
No. The NTI-tss is indicated for all types of TMDs. The only way *any* musculature of the head and neck can contract with significant intensity is to have either canine or posterior teeth (or both) in occlusion. It is the occluding of these teeth which allows the musculature to exert strain on the alveolar structures, TM joint(s), and sphenoid bone (pterygoid plates). Without the occluding of these teeth (i.e., "rest position"), these structures stand the best chance for healing and remodeling. Therefore, the NTI-tss is ideal for all types of TMDs and MPDs.
Is there a patient with whom the NTI-tss clearly would not be effective?
Assuming the patient has the adequate dentition to support the NTI-tss matrix, the NTI-tss will be effective in the presence of muscular parafunction. A lack of effect can be used as a diagnostic rule-out method (assuming protocol was followed with no oversights)
While every dentist has certainly heard parents complain of a very young child who grinds their teeth while sleeping, the Standard NTI-tss device is best suited for permanent teeth. However, for children without permanent teeth who are symptomatic resulting from muscular parafunction, a custom NTI-tss type device can be fabricated.
The duration of the NTI-tss device is dependent on the intensity of the patient's grinding, not clenching. If a patient is an intense grinder, over time they may develop a divot in the Discluding Element of the NTI-tss. This situation would simply require periodic filling and smoothing of the divot.
How soon should the patient expect to see the presenting symptoms subside?
Subsiding symptoms are directly related to the degree and longevity of each individual's condition. However, it is not unusual for some patients to report significant relief overnight; others usually within two to four weeks.
I'll swallow it.
My teeth will supra-erupt . . . because they do not touch in the back
Who's that picture of?
That's Dr. Boyd's wife, circa 1992. She was the first migraine patient (other than Dr. Boyd) to use the NTI. The photo was taken soon after her migraines had resolved. Legend has it, the better she felt, the more she considered marrying Dr. Boyd. ;-)