The jaw works the night shift.
The dentist sees the worn teeth. You feel the morning ache in the jaw, the headache above the temple, and the splint that protects the teeth but does not stop the grinding.
What it looks like day to day.
If you recognise three or more, it is worth looking not at each complaint separately, but at the system that connects them.
- 01You wake with a stiff or aching jaw
- 02Headache in the temples in the morning
- 03The dentist sees wear on the enamel
- 04Your partner hears the grinding
- 05The splint protects the teeth, the grinding remains
The complaint is on the surface. The control sits deeper.
Bruxism in sleep is not a dental problem but an event of the nervous system. It arises during micro-arousals — brief upward switches during sleep that the person does not remember. The jaw is where this becomes visible.
That is why the splint is right and necessary — it protects the teeth. But it protects against the consequence. The cause lies further in: unstable night-time regulation, most often against a background of stress and restless sleep.
NESA works on that night-time regulation, not on the jaw. The device does not relax a muscle and does not replace the splint — it supports the system that determines how stable sleep is.
We force nothing. We speak the language the body already uses.
NESA XSIGNAL® is a certified medical device for non-invasive neuromodulation of the autonomic nervous system.
Your body runs on electricity
The autonomic nervous system — the one that governs sleep, alertness, bladder and digestion — works at very low frequencies: between 1 and 14 cycles per second.
NESA speaks in the same window
Microcurrents in that same frequency range, delivered through gloves and ankle cuffs while you lie down or sit in a chair. No needles, no medication, no preparation.
The fact that you cannot feel it is why it works
The signal sits below the threshold of sensation. Because it does not trigger the body’s defences, the nervous system does not habituate to it, and the signal can accompany it session after session.
The practitioner’s hands stay free
The session runs alongside another therapy — physiotherapy, conversation, rehabilitation. Not a separate appointment, but a layer over the treatment already under way.
Manufacturer data, NESA (NGS Health and Mind S.L.), post-market surveillance system, as of July 2026. The zero refers to reported serious adverse events, not to the absence of any reaction whatsoever.
When would I notice anything?
It depends on one thing: how long the regulation has been disturbed. We say so up front, so you know what to expect — and so you do not stop after the third session because nothing has happened yet.
The first changes are usually felt here — most often in sleep and in recovery.
The more substantial change comes in this range, at a steady rhythm of two sessions a week.
With a chronic profile the work is done in blocks. After each block, a fresh assessment with objective measures, not by feel alone.
A guiding framework from practice, not a promise of results. The exact schedule is set by the practitioner delivering the treatment.
The figures come from the manufacturer — with the source.
NESA is used in clinics and hospitals across 53 countries and is the subject of more than 20 peer-reviewed publications. The manufacturer publishes the results together with the journal and PMID of each study — so anyone can check the source themselves instead of relying on a retelling.
Where this leads.
A complaint rarely belongs to one specialty alone. This is where one usually starts with it — and what each page covers.
Short answers, no hedging.
Should I drop the splint?
No. The splint protects your teeth, and that is the dentist’s decision, not a treatment’s. NESA works alongside it, not instead of it.
Why treat the nervous system and not the jaw?
Because grinding in sleep starts there. The jaw is where you see it — not where it begins.
Will the grinding stop?
That cannot be promised. The aim is more stable sleep and fewer micro-arousals; the grinding is their consequence. The change is assessed together with the dentist.
Who delivers the treatment?
A certified centre. In Bulgaria there are such centres in Sofia, Plovdiv and Pleven — the addresses and contacts are on our centres page.
It rarely comes alone.
Complaints of the autonomic nervous system rarely arrive on their own. If you recognise another one here, that is most likely not a coincidence.
Where can I get a NESA session?
The authorised centres in Bulgaria — Sofia, Plovdiv and Pleven — with address, phone and contact person.
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