Blog, Dentistry

Dentures Causing Weakness

The elderly are at risk of falling, some more than others.

If we start to fall, we need to correct that quickly, which is why it’s important to check your patient’s muscle strength properly, especially the strength of their ECCENTRIC contractions, since these are the ones that are going to prevent them falling.

In this video you can see how I test the strength of an 82 year old lady and find that all of her major muscle groups are weak, how I find the cause in her denture and how she responds to recurring her denture.

Ten days later… the change is still working


Monomer is used in the manufacture of some dentures, and while leaching of monomer is small, it sometimes provides enough inhibitory afferent input to affect motor control. Fortunately, this monomer is easily cured and rendered inert with an ultraviolet light, which you can easily find on eBay. I find this needs to be done every 6 months or so if the denture is quite thick (as the monomer diffuses out of the dentures).


A long term study on residual monomer release from denture materials.

Muscle strength rather than muscle mass is associated with standing balance in elderly outpatients.


Simon King is the founder of He teaches health practitioners proprioceptive muscle testing to find and permanently eliminate muscle inhibition by restoring normal afferent input.

Blog, Dentistry

The link from dentistry to back pain

In 1994, researchers in Adelaide published an extraordinary study in the Journal of Experimental Brain Research. Turker and colleagues inserted small electrodes into the biting muscles of volunteers. These electrodes were able to measure facilitation and inhibition of those muscles. The researchers then applied slow pressure to a tooth – simulating what would happen if the volunteer was biting through something hard. The measurements showed that slowly increasing pressure facilitated the muscle making it able to contract. The researchers then gave the tooth a brisk tap, simulating the situation where we suddenly bite something hard, like a seed or a stone. The biting muscles were immediately inhibited or switched off.

Chewing and biting turn out to be relatively subconscious activities. Since we don’t actually know how hard something is until we bite it, each tooth socket is filled with nerve sensors that tell our brain how much pressure is on the tooth. These sensors were stimulated by the increasing pressure (as would be the case if we were biting a nut or an apple) and they, in turn cause the bite muscles to fire. If the apple or nut turn out to be harder than we anticipated, the sensors detect more pressure and send more for more output from the muscles – we hardly realise it’s happening. If, however, we are chewing away and suddenly bite something hard and unexpected like a stone or seed, those same sensors detect a sudden increase in pressure and suddenly inhibit or switch off the bite muscles, preventing damage to the tooth.

Remember last time you nearly broke a tooth biting on something unexpected? Were just your jaw muscles affected? No, of course not. Likely your whole body withdrew from the insult.

Nowhere is it more important to realise that sensory input is linked to motor output, than in teeth.

All that subconscious control over our biting, chewing, kissing, talking takes an awful lot of sensory input and an awful lot of subsequent muscle control.

The disproportionate amount of input from the hands and mouth region shows up in the sensory homunculus.

The sensory Homonculus

If proprioception matters to the body, it matters most to the teeth. While much proprioception is processed at a local spinal level, all sensory information ultimately  reaches the sensory lobe of the brain which has direct connections to the motor areas. The function of this sensory lobe has been well mapped and illustrates that a large area of the brain is devoted to processing sensory information from the mouth, lips and teeth.

Proprioceptive irritation to the mouth can cause severe muscle inhibition.

While most dentists are aware that a faulty bite can cause facial and jaw pains, most have no idea that the work they do in the mouth can also result in muscle weakness in almost any other area of the body.

If you are using proprioceptive muscle testing, eventually, you are eventually forced to look at teeth. Sadly, looking at teeth is problematic for reasons of patient preference and expectations, but if you are dedicated to working out the real reasons behind injuries and illness, and the reasons why some physical treatments just never work then you can’t avoid the inevitable. The upside is that nothing else will give you the satisfaction that comes from truly changing someone’s life.

Here are just a few examples:



Remember that our online and live training gives you everything you need to know about the dental causes of proprioceptive insult that cause nerve interference and muscle inhibition.

Click here for online training

Click here for our live intensives


Blog, Dentistry

Bad Retainer

Blog, Dentistry

Monomer in Dentures

Blog, Dentistry

Headaches and Crowns

Blog, Dentistry

Amalgam removal 20% increase in strength

By using before and after maximum lift capacity it was easy to demonstrate that this one amalgam was causing a general decrease in muscle power.

See the remarkable transformation after it was removed:

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Amalgam removal

Blog, Case Histories, Chiropractic, Dentistry, Proprioception

Unnecessary pain and injury

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Blog, Case Histories, Dentistry

Twice the range of motion

Proprioception is a powerful ally in improving flexibility and strength. In this video, a 65 year old man demonstrates how he doubled his flexibility and increased his strength (after 10 years of yoga) in just one month, simply by removing his metal crowns.

Double your flexibility without exercise or stretching



Live Without Pain

The book he is referring to is Live Without Pain – A new theory on what’s wrong with you and how to fix it.

Download your free copy (PDF) by clicking on the book cover.

Blog, Dentistry

Mercury and Neuronal Degeneration

Interesting video on the effects of mercury on developing neurons.

How Mercury Causes Brain Neuron Damage - Uni. of Calgary

Blog, Dentistry

Why don’t some injuries heal?

Some injuries just don’t seem to heal no matter what treatment or therapy is used. This woman suffered for 12 years with low back pain after a whiplash injury. Turns out, the injury wasn’t the reason she didn’t get better …..

Whiplash for 12 years

2 years later ….

I’m not crying every day.” Karen Robinson is
a 38 year-old housewife from Stockport in Cheshire.

13 years ago, I had a car accident where I apparently suffered whiplash. As a result, I suffered acute back problems, culminating in me slipping two discs when I fell down the stairs. I spent thousands of pounds – reflexology, Chinese homeopathy… I just wanted to find something that worked! My local chiropractor thought it might be linked to my crown (the same year as my accident, I’d had a metal crown put in) and put me in touch with Simon.

I can remember my husband saying at the time – what have you been told now! So we both went and visited  Simon in Berkhamsted, and Simon asked me to do the dumbbell test, where he asked me to lift a dumbbell with my left and then my right hand. My right hand just wouldn’t move – until he told me to cover my crown, and then yes, I could move it!

On Simon’s advice, I had the crown removed and replaced with a non-metal version. I can honestly say that my back has improved ten-fold, instantly my strength came back… I’m no longer on tablets every day and I’m not crying every day.”

Blog, Case Histories, Dentistry

Sciatica Cured Overnight

A patient tells how his sciatica was cured overnight when his dentist removed a tooth and two fillings.


Blog, Case Histories, Dentistry

Dental crown and pins

Tina Vincent in NZ showing how dental crowns caused stress and anxiety plus a lack of strength in a patient.

Amalgam & Metal pins Client B

Blog, Dentistry

Weakness with very small amalgam

This is from the “leave no stone unturned” department. This young man loved to work out but his heavy lifting always damaged his back. That went on for months until I discovered that one, tiny amalgam filling was actually causing his weakness. He went on to make a full recovery once that amalgam was removed.

Tiny Amalgam

Blog, Dentistry

Denture Causing Weakness

Occasionally just the taste of the acrylic used to make dentures causes weakness. Some dentures, especially old ones are made with a very toxic chemical called monomer. Just the taste of this chemical is enough to cause weakness in some people.

Blog, Dentistry

Gold Crowns

Gold Crown

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