Gneuromuscular Dentistry (GNM)

Gneuromuscular Dentistry (GNM): Measuring the Bite Objectively for Predictable Results

Many dentists have heard of centric relation and gnathology — but few have experienced a truly objectively measured, physiologic bite. GNM bridges this gap, combining clinical science, measurement technology, and hands-on protocols to achieve predictable occlusion and patient comfort. This raises a central question for dentists: How can we achieve predictable occlusion if the bite is not objectively measured? If a mandibular position is not objectively measured, it is ultimately being assumed.

What GNM Means at OC

GNM is the ADVANCED Clinical Application of Gnathic + Neuromuscular Understanding. At OC, GNM is not just a discipline — it’s a mindset. It’s the art of thinking beyond boundaries, of seeing dentistry not as a set of rigid rules but as a living, evolving science. Many dentists are trained in specialties and techniques, yet remain confined by what they’ve already learned. GNM breaks that mold. A GNM-trained dentist is defined not by memorized protocols, but by the freedom to think, to question, and to innovate. Clinical success in GNM is born from:

Freedom of time – the discipline to apply methods with precision, patience, and care until the right result is achieved.
Freedom of thought – the courage to look beyond tradition and imagine new possibilities.
Freedom of application – the skill to adapt techniques to the unique needs of each patient.

GNM at OC is about cultivating dentists who don’t just “do dentistry” — they re-imagine it. They embrace complexity, unlock solutions, and transform patient care through a liberated way of thinking.

Evidence-Based by Objective Measurement

Evidence-based dentistry demands objective, measurable, reproducible data. GNM doesn’t ask you to take our word for it — it gives you the instruments to measure it yourself. That IS evidence. That IS science. See Our Scientific Evidence & Peer-Reviewed Research → The home of GNM dentistry is at Occlusion Connections, an advanced teaching center in Las Vegas, NV, pioneered and developed by Dr. Clayton A. Chan. Dr. Chan is the originator and author of the term “GNM – Gneuromuscular” (2008) as it is used in dentistry, blending both gnathology (G) and neuromuscular (NM) terms together. “A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.” — Max Planck

How Stable Is Your Case?

This question best represents what GNM is about. GNM Optimized → “GNM is a measured approach that focuses on stable results.” G + NM = Gnathologics + Neuromuscular = GNM GNM is an advanced blend of occlusal protocols and techniques that enhances the “thinking” dentist’s clinical effectiveness in achieving successful clinical outcomes. It is based on objectively measured criteria as they relate to the gnathic and neuro-muscular systems in dentistry. It focuses on the clinical application of neuromuscular principles and bio-physiologic science at an advanced detailed level.

Definition of Scientific Method — Merriam-Webster Dictionary

“Principles and procedures for the systematic pursuit of knowledge involving the recognition and formulation of a problem, the collection of data through observation and experiment, and the formulation and testing of hypotheses.”

Defining Gneuromuscular Dentistry

Gneuromuscular Dentistry (GNM) clinically is a combined application of refined skill sets based on one’s understanding that are required to effectively treat cases comprehensively. GNM goes beyond the present-day concepts of “Neuromuscular (NM) Dentistry” (note the spelling). GNM is dentistry that focuses on body alignment, optimal mandibular function (quality), and accurate occlusion (quality) that results in optimal function and form (based on objective measurements at the next level). In reality, gnathologics (Gk. study of the jaw) is a missing key to neuromuscular dentistry, and neuromuscular concepts are missing key principles and concepts of gnathological teachings. An emphasis on “quality” of physiologic function and quality of resting modes of the masticatory system beyond an optimally balanced terminal contact position (myocentric) is of significant interest when GNM occlusal principles are implemented. “Myo-function” or “myo-functional” relationships are established based on both gnathic and neuromuscular principles.

Both Gnathologic and Neuromuscular understanding is required — it’s not a matter of one or the other. It’s BOTH.
Clinicians need to understand how to optimally apply the occlusal principles in a balanced way, thus “Gneuromuscular Occlusion.”
GNM is a “Thinking Process.”
It’s comprehensive, SEEING THE BIGGER PICTURE.

Defining GNM Occlusion

“Gneuromuscular Occlusion (gnathologically driven neuromuscular occlusion) is the art and science of analyzing and determining a starting treatment position where jaw joints and muscles are allowed to adapt to a healing process, eliminating torque and tension in the masticatory and cervical neck. Often times, patients report reduction of headaches, neck pain, and jaw joint relaxation. This position is tested and tried out before any final definite dental work is done.” — Jerry E.Y. Lim, BDS, FRACDS, Singapore, July 25, 2017

Neuromuscular Dentistry (NMD)

Neuromuscular Dentistry (NMD) implements the SCIENCE of electro-diagnostic measuring technology (such as scans, EMGs, and CMS jaw tracking data) in the dental practice. It focuses on establishing an occlusion based on physiologic parameters between the cranio and mandibular structures that are innervated by the trigeminal system (the 5th cranial nerve). Read more on Defining Neuromuscular Dentistry →

Gneuromuscular Dentistry (GNM) — Clinical Application

Gneuromuscular Dentistry (GNM) relates the CLINICAL application of occlusal therapies (the gnathologics) to TMD, restorative/prosthetics, and orthodontic dentistry, and to their relationship to the central nervous system (CNS) as well as the autonomic nervous system (ANS) based on NMD science and technology. It’s not an academic exercise of knowledge, but rather importantly the skilled application of occlusal management disciplines at the highest level — addressing how the teeth, muscles, and joints optimally move and function (in HEALTH, not in dysfunction). GNM addresses these functional relationships comprehensively as they relate to the bio-physiology and neurology of the masticatory system based on the detailed application and measured assessments (before, mid, and after treatment).

Another View Point

NM has often, in my opinion, been just too dependent on the TENS-driven, EMG-guided “myocentric” position, leaving too many key principles of classic gnathology out of the “NM mix.”

TENS alone cannot overcome habitual muscle engrams and para-functional spasm and torque.

EMGs alone cannot provide a primary reliable measure of optimal lower jaw positioning and muscle health.

The teeth and the “gearing” they provide must support, stabilize, and balance an “optimal 6-dimensional untorqued jaw” position.

GNM is an investigative process in analyzing and reassessing the diagnostic quality of the patient’s resting and functional modes, as well as implementing specific protocols in reassessing occlusal health provided by the clinician.

Clinical Focus of GNM: Quality of Functional Health & Attention to Details

These are some of the topics that dentists come to OC to learn and advance their understanding and appreciation of the GNM clinical concepts:

How to record a physiologic “Optimized Bite” both with and without K7 Scan 5.
Doctors learn what GNM bite optimization is about versus other NM bite registration techniques.
Reliance on EMG values — OC GNM is not dependent on EMG readings to determine an Optimized mandibular-to-maxillary bite relationship in 6 dimensions. We take it a step further. We learn the power of understanding and interpreting the K7 jaw tracking data to determine the most optimal VDO, AP, and frontal/lateral mandibular relationships for our patients. This is often missed in most neuromuscular paradigms.
Interpreting the various recordings and measured data is key to properly understanding GNM at the next level.
Understanding the meanings and implications of high and low EMGs after TENS is a diagnostic key; OC GNM teachings recognize key EMG patterns that will influence the diagnosis of the case as well as how the orthotic is occlusally managed during treatment.
Proper “B” group placement of electrodes as well as proper cervical group monitoring on EMGs is foundational to optimal scan interpretation and diagnosis.
Orthotic design — GNM is different. OC’s design parameters address quality functional and resting requirements for healthy cervical muscle health, quality head rotational, side-bending flexion and extension movements, and postural body balance. Without these, masticatory health is impaired.
Anterior coupling — Most of the conventional NM orthotics our doctors have seen have no “coupling” with very poor discluding schemes.
Occlusal schemes go beyond canine rise. Lateral and protrusive movements with no posterior interferences (Class 4 prematurities) should not exist. OC recognizes posterior interferences incur significant problems to all cases involving occlusal/TMD issues. Proper identification and remedying of Class 4 interfering schemes are key to resolving the mystery of TMD myofascial and cervical pain problems and improving quality health.
Implementation of advanced micro occlusal adjustment techniques and specific protocols that enhance gnathic principles of anatomic form and function based on an optimized myo-trajectory in both the frontal/lateral and antero-posterior domains of mandibular positioning.
Mounting model casts to a Modified Fox Plane (physiologic) vs. HIP occlusal plane (pathologic) is fundamental to neuromuscular stability.
And so much more.

Trained Adaptive Reasoning Comes First

“Trained adaptive reasoning comes first. Tools and technology become a distant second.” GNM uses a “Thinking Process” which doctors learn — not following some cookbook recipe in the use of bio-electronic instruments alone when interpreting the K7 data. It is a refined application in the clinical setting that helps make the OC-trained dentists not robots following a certain philosophy, but rather it trains them to be “thinkers,” analyzers, synthesizers of the findings, discoverers, diagnosticians, and physicians of the mouth at a different level. “GNM to me is more than just using the tools — although we use them and can’t do without them, but we use them well in a skilled manner with a different way of thinking about the technology than others. It is like a trained violinist who can play concertos and Mozart versus playing squeaky scratchy stringed sounding music with our instrument. Our objective is to help other dentists to master their dentistry. Our Masterclass teachings and instruction is a process. That is what GNM is to me — it’s another level, another spirit, another attitude, another vision, and another perspective that our doctors discover. They say it goes above and beyond what they previously learned.” — Clayton A. Chan, D.D.S., Las Vegas, NV USA Read more: Defining Gneuromuscular Dentistry →

GNM: The Discipline That Unlocks World-Class Dentistry

GNM isn’t just another concept — it’s a discipline of dentistry that demands precision, curiosity, and mastery. At its core, GNM applies gnathologic occlusal principles — the very keys every serious student of dentistry must learn if they aspire to become a world-class clinician.

Why It Matters

Objective Diagnostics: Today’s clinician can record, measure, and correlate abnormal occlusion with therapies in TMD, restorative/prosthetic dentistry, and orthodontics. This isn’t theory — it’s actionable science. The Real Difference: Technology is powerful, but it’s the trained clinician’s eye, discipline, and devotion to anatomical detail that transforms data into healing. Mastery of mandibular function isn’t optional — it’s the critical difference that defines excellence in OC teachings. Foundational Knowledge First: Learning the six gnathologic occlusal KEYS is non-negotiable. Without them, advanced tools and technology are just noise. Technology With Purpose: Jaw tracking (CMS) and electromyography aren’t gadgets — they’re gateways to understanding how muscles respond, how occlusion impacts posture, and how the masticatory system reveals its health through measurable signals. GNM is the bridge between science and artistry, technology and touch, data and discernment. It’s where you stop practicing dentistry as a routine — and start practicing it as a discipline.

Three Clinical Questions GNM Answers

Gneuromuscular Dentistry recognizes and values the use of computerized mandibular scanning (CMS), low-frequency dental TENS, and electromyography (EMG) as a scientific basis to apply the principles of occlusion to enhance a more complete perspective of occlusal management (gnathologics) without guessing where one’s bite should be. It plays a significant role in dentistry by documenting and recording data to address the following 3 clinical questions:

Does your patient experience masticatory dysfunction (physiologic function, impairment, or dysfunction)?
Does your patient experience TMJ pain (tenderness and/or discomfort)?
Does your patient have TMJ derangement problems (physical abnormal changes to the shape, form, and position of the condyles within the fossa)?

If you answered YES to any one of these three questions, then GNM dentistry is designed to address these factors scientifically, clinically, and practically. It is the clinical application of both technology and hands-on skills, attention to occlusal details, and experience that makes any patient case successful and relevant to today’s practitioner. Read more: What Does the K7 Technology Measure? →

Elevating Dentistry Through GNM Occlusion

GNM occlusion skills, training, protocols, and methods are essential disciplines for any clinician who seeks to move beyond routine practice. When properly integrated, they unlock the full potential of advanced technologies — CMS jaw tracking, EMG analysis, and low-frequency TENS therapy — bringing dentistry to the next level.

Why It Matters

Jaw Problems: Diagnose and treat occlusal imbalances with precision.
Cervical Posture: Understand how occlusion influences neck alignment and overall posture.
Muscle Activity: Measure and interpret masticatory system responses to guide therapy with confidence.

The Takeaway: GNM isn’t just an add-on — it’s the discipline that transforms technology into healing. By mastering these protocols, clinicians gain the ability to connect occlusion, posture, and muscle activity into a unified approach that elevates patient care and sets a new standard in modern dentistry.

A Note from Dr. Chan

NOTE: GNM is not the answer for everything and for everyone. What drives me to post on GNM is because from my own experience I have observed that the blend of gnathology (clinical application) and the neuromuscular (bio-physiologic science) protocols might offer a better result than just one or the other approach. In my own practice and experience, when I implemented both these approaches and techniques meticulously, I have found that by applying all that I have learned and recognized over the years, these approaches have been more effective for my patients in answering the clinical questions and concerns we are faced with. That does not mean that the “GNM approach” or “every GNM dentist” can cure every TMD patient. Most dentists are genuinely concerned for their patients and strive to do the best to help them, but every dentist — including myself — knows and admits that he/she has limitations and has cases they cannot resolve regardless of the approaches they take.

GNM is a logical and scientific approach that addresses all three disciplines effectively from a TMD perspective, an orthodontic/orthopedic perspective, as well as a comprehensive restorative perspective.

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