Shock Transfer Core®
Mouthguards have been made for decades the same way. A single layer of thermoplastic material is moulded to cover the upper teeth. This process is the same whether it is a custom made one from a Dentist or a store bought version.
More recently, dentists have become aware of the shortcomings in fit of even custom made mouthguards, and the use of multiple layered mouthguards, made in the dental laboratory have shown to give a better fit utilising a harder layer of material integrated with usually 2 layers of regular material (EVA). This process does produce a better mouthguard, but because there are 2 to 3 moulding processes required, so the cost runs to hundreds of dollars. It was also noted that the impact resistance of these expensive guards was superior to the regular single layer versions. This impact feature is the single most important feature of any mouthguard. However it is often difficult for the consumer to evaluate the differences in view of the price differences and convenience.
Dentists have discouraged the use of store bought mouthguards, mainly because the fit is not as good as the custom made ones they make. Still the retail mouthguards have been the popular choice for the majority of consumers because of convenience even more than the price.
Multiple visits to the Dentist are not a desirable option, plus the price tag is never cheap. Few companies in the USA, over the last decade, pioneered the use of co-injection moulding for retail mouthguards. This has given the consumer both a slightly better fitting mouthguard and incorporation of better impact absorbing materials (Kraton) in key areas where impact absorbsion is most needed. However, the fit has not been as good as the custom made versions. But the best compromise to date.
Mouthguards and Protection
Most mouthguards made in this traditional way do not offer anything like the protection needed for the front teeth. Considering teeth have one unique structural disadvantage over all other human structures. Teeth do not heal or grow back like bone muscle and skin. Once broken, a tooth can be repaired but it will NEVER be the same. Regular maintenance of this damage by a Dentist is required for life.
Check out any mouthguard. When you press on the sided they bend quite easily. When a front tooth is protected by just this single layer of flexible material, a light blow will be absorbed by the mouthguard, a heavier blow will be transferred direct to the front teeth which may either break or be dislocated from the jaw bone that holds it. The back teeth, if subjected to the same force, rarely break. Why? Because they have 5 times the thickness and 2-3 times the number of roots. So it would make sense to use the strength of the back teeth to protect the front teeth better.
Shock Transfer Core® was an innovation from Dr Chris Farrell, as a development from the dual layer technology developed for customisable orthodontic appliances. The use of a multiple injection process to improve protection of the front teeth from direct impact and to protect the TM Joints has brought the convenient “boil and bite” style mouthguard into the genuine protection insisted by the Dental profession for decades. The Shock Transfer Core® (STC) uses an inner mould of hard and semi thermoplastic material, fully covered with an outer “skin” of regular mouldable mouthguard material. This means that any blow to the front teeth will be not only absorbed by the outer flexible material of the mouthguard, the heavier forces will be transferred via the inner core (STC) directly to the strong multi rooted molar teeth. This transfer of force is unique to the new range of POWRGARD® mouthguards.
The added advantage of the Shock Transfer Core® is moulding process and the fit. When regular mouthguards are heated in hot water to mould them to the shape of the teeth, they lose their shape and become difficult to control. The STC does not soften with boiled water (although it becomes slightly more flexible to customise the dental arch size). Therefore the mouthguard with STC is easier to control, getting it into the mouth and then the mould process compresses the outer material into the teeth giving a fit far tighter than has previously possible even with the custom made mouthguards from a Dentist. The resultant feature of Shock Transfer Core® technology is superior fit and protection to any previous mouthguard made. The harder feel and the more precise fitting procedure will be new to the users of older mouthguards. It is a new generation of mouthguards and so should not be compared with the old when it comes to the fitting and wearing. Generally, because of the tighter fit, the user will be more aware of the mouthguard, but will quickly adapt to the advantage of a reliable and enduring fit. Plus there is less need to remove it to speak.