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The Fundamental Assumption of CR Treatment
Every CR based treatment protocol rests on a foundational assumption that is rarely examined openly:
That treating the patient in centric relation will produce outcomes that hold in the position the patient actually lives in.
This assumption is so deeply embedded in gnathologic training that most clinicians never question it. Of course you treat in CR — it is reproducible, it is stable, it is the reference point the profession has relied on for decades.
But there is a clinical reality that every experienced dentist has encountered — and that most dental educators are reluctant to address directly:
Patients do not function in centric relation.
They function in maximum intercuspation. They function in the positions their muscles have established over years of habitual closure. They function in the envelope of motion their neuromuscular system has adapted to — which may be close to CR or significantly different from it depending on their history of occlusal accommodation.
CR is where you put the patient for a record. It is not where they live.
The CR-MIP Discrepancy — What It Actually Means
Every dentist trained in CR is familiar with the CR-MIP discrepancy — the slide from centric relation to maximum intercuspation that occurs in most patients.
The standard teaching is that this slide should be minimized or eliminated — that the goal of treatment is to bring MIP into coincidence with CR so the patient’s habitual closure matches the reference position.
This is a legitimate clinical goal. And in many cases it produces good outcomes.
But it raises a question that the standard teaching does not fully answer:
When you eliminate the CR-MIP discrepancy — which position are you actually establishing?
Are you bringing MIP to CR — establishing the manipulated condylar position as the new habitual closure?
Or are you bringing CR to where the patient’s neuromuscular system actually wants to be — which may not be the manipulated position at all?
The answer to this question determines whether the outcome will be stable long term — or whether the neuromuscular system will spend the next weeks and months finding its way back to where it prefers to be.
Where Patients Actually Function
The masticatory system is not passive. It does not simply accept whatever position the dentist establishes. It actively seeks its own resolution — and that resolution is determined by the neuromuscular system not by the articulator.
Where patients actually function is determined by:
- Muscle engrams — habitual neuromuscular patterns established over years of repetitive function
- Proprioceptive feedback — the continuous sensory input from the periodontal ligament mechanoreceptors guiding mandibular position
- Cervical and postural influences — the trigeminal-cervical convergence pathway linking jaw position to head and neck posture
- Adaptive compensation patterns — the accommodations the masticatory system has made around existing occlusal discrepancies
None of these are visible on an articulator. None of them are captured by a CR bite record. And none of them are eliminated by establishing contacts at CR.
They are biological realities that continue operating the moment the patient walks out of the office.
The Neuromuscular System Always Wins
Here is the clinical truth that every honest dentist eventually discovers:
You can establish whatever position you want at the chair. The neuromuscular system will decide whether to accept it.
If the position you establish corresponds to where the neuromuscular system wants to be — the outcome holds. The patient feels stable. The restoration functions correctly. The case is resolved.
If the position you establish does not correspond to where the neuromuscular system wants to be — the system will accommodate around it. Muscles will compensate. The mandible will shift. Contacts will change. The patient will return.
This is not a failure of technique. It is a biological reality.
The question CR technique cannot answer is the same question it has never been able to answer:
How do you know the position you established is where the neuromuscular system actually wants to be?
Treating Where the Patient Actually Functions
GNM starts from a different premise than CR.
Rather than establishing a reference position through manipulation and then building treatment around it — GNM first identifies where the neuromuscular system wants to be through objective measurement and then builds treatment around that measured position.
The process:
- J5 Dental TENS — 45 to 60 minutes of low frequency neuromuscular stimulation deprograms the masticatory muscles — releasing the engrams and compensatory patterns that have been holding the mandible off its true physiologic path
- K7 jaw tracking — records the myo-trajectory the mandible follows when the musculature is genuinely relaxed — not manipulated — not guided — simply measured
- Surface EMG — confirms that resting and functional muscle activity is within physiologic range and bilaterally symmetric
- Electrosonography — evaluates joint behavior during function
The position the mandible finds through this process is not where the clinician’s hands put it. It is where the neuromuscular system — freed from compensation and engram — naturally goes.
That is the position the patient actually lives in when the system is healthy.
And that is the position treatment should be built around.
The Shift That Changes Everything
The shift from CR based treatment to GNM based treatment is not a rejection of structural thinking. The gnathologic insight — that condylar position matters, that disc-fossa relationships are clinically significant, that occlusal stability requires a reliable reference — is preserved and respected within GNM.
What changes is the method of finding that reference.
CR finds it through manipulation — a repeatable mechanical process that bypasses the neuromuscular system.
GNM finds it through measurement — an objective physiologic process that works with the neuromuscular system.
The difference in outcomes — particularly in complex TMD patients, cervical dysfunction cases and full mouth rehabilitations — is the difference between treating where the clinician puts the patient and treating where the patient actually lives.
You can get back to CR. But your patient never went there in the first place.
Continue Learning
🔹 CR vs Physiologic Occlusion
- Centric Relation Isn’t Outdated — But It Is Incomplete →
- Truth About Centric Relation: An Evolving Term →
- CR Is Reproducible — So Why Aren’t the Results? →
- What Is Physiologic Occlusion? Why the Answer Determines Everything →
- GNM is Not the Same as NM — Why the Distinction Matters →
- CR vs Neuromuscular Dentistry — Why This Is the Wrong Debate →
- CR vs Myocentric — What Is the Actual Difference? →
🔹 The Measurement Gap
- Why Your Dental Occlusion Doesn’t Hold — Even When Everything Looks Right →
- Why Dental Bite Adjustments Fail — And How to Finally Get It Right →
- Why Articulating Paper Does Not Reflect Functional Occlusion →
- What Does the K7 Technology Measure? →
🔹 The Original Science Behind GNM
- Why OC is Different — The Original Science Behind GNM Dentistry →
- Scientific Truths: Bio-Physiology & Objective Measurements →
- Why Anterior Deprogrammers Fail the Complex TMD Patient →
- Why Posterior Occlusal Support Matters — The Neurophysiologic Explanation →
🔹 Ready to Train
Written by Clayton A. Chan, D.D.S. — Founder and Director, Occlusion Connections | Las Vegas, Nevada
6170 W. Desert Inn Road, Las Vegas, Nevada 89146 | Telephone: (702) 271-2950
Leader in Gneuromuscular Dentistry