Official supplier for Olympic,
World and European Champions



Renowned world, european and olympic champions have been trusting our expertise and their 4Actionmouthguards for years, while reducing the risk of injuries in dangerous sports such as rugby, hockey and boxing by more than 98%. (Source: National Youth Sports Safety Foundation) Invest five minutes into professional care rather than having to undergo many hours of painful surgery at the orthodontics.

Advantages of the 4Action Mouthguard

The 4Actionmouthguard is custom-made in a dental laboratory after the dental print has been taken and is precisely matched to your dentition. The 4Actionmouthguard guarantees perfect fit, optimum support and maximum comfort. The athlete can easily recognize his or her 4Actionmouthguard by its individual design or name plate, so any confusion becomes impossible. Visit us and let our consultants help you. Together with you we produce and design your unique mouthguard.


Leisner Dental GmbH
Saturnweg 17 - 22391 Hamburg

Phone: 040 - 59 07 96
Fax: 040 - 50 57 19



Schlemmer Zahntechnik GmbH

Kreuzstraße 13 - 80331 München

Phone: 089 - 26 83 70
Fax: 089 - 26 42 33




Sports Mouthguards



2-layered, with hard layer for types of sport where hard and small-area impacts are to be expected.



3-layered, for types of sport where very hard, flat impacts are to be expected.



2-layered, for types of sport where flat impacts are to be expected.



2-layered, recommended for children and young people up to 12 years.

Important Features

  • Controlled adaptation
  • Individually produced in dental laboratory
  • Unique security features
  • Perfect fit, high voice comfort
  • Different types depending on sport and age
  • Many colors available, comes in high quality box

Who wears mouthguards?

  • World class boxers such as Dr. Vitali Klitschko, Dr. Wladimir Klitschko, Dariusz Michalczewski, Regina Halmich, Susan Kentikian, Juan Carlos Gomez, Axel Schulz, Juergen Brähmer, Chagaev, Jack Culcay, Marco Huck, Cecilia Braekhus, Yoan Pablo Hernandez and many more
  • Players of the German hockey national team as well as the Hamburg Crocodiles and the Schwenninger Wild Wings
  • Female and male players of the German field hockey national team
  • Thai boxers like Frank Otto, Peter Aerts, Till Görres, and many more.
  • The American football teams Rheinfire and Hamburg Blue Devils
  • Handball players Jan Holpert, Jan Fegter, Roger Kjendalen, Chrischa Hannawald, and more.

Personalized Mouthguard

Here you can choose your personal color combination: 

Select from the color fields below and drag the desired color to the desired position.

2 Colors

3 Colors

green dark blue yellow violet
transparent turquoise gold light blue
white wine red orange black
neon red neon yellow neon green pink
red silver

Ordering - Your personal lettering on your mouthguard for no additional costs!

For ordering simply print out the current flyer, enter your data, choose a model, one or more colors, decide for a lettering. Then send it by mail or e-mail directly to us or give it to one of our partners. Then a print of your denture has to be produced. And, done!


No More Snoring


Consulting & Adaption

With our expertise, you receive consultation on the Anti-snoring splint protrusion braces and we gladly take the necessary dental print to ensure that your snoring is going to stop. The Anti-snoring splint protrusion braces move the lower jaw into a physiologically forward position. This prevents the tongue from falling back into the throat and reduces snoring by up to 100%.

  • No medications
  • No side effects
  • No surgical procedure
  • Use of biocompatible materials

For further information please contact: +49 40-590796


Invisible tooth correction


Unsichtbare Zahnkorrektur

You no longer have to wear uncomfortable and unsightly braces. 4Action invisible tooth correction offers you an innovative technique of invisible tooth correction. With the help of practically invisible braces teeth are brought into the desired position. In addition you enjoy shorter treatment times. You will get braces that you can change on your own. This eliminates unnecessary appointments and provides time-saving treatment.
The entire treatment is painless and comfortable. If you want a smile that will change your appearance, then 4Action invisible tooth correction is just perfect for you. Tailor-made braces will change your smile and barely affect your everyday life.

The alternative for braces







  • Invisible tooth regulation
  • Gently achieving the desired result
  • Consulting by an expert team
  • Latest technology
  • Interactive 3D digital preview
  • Convenient and effective treatment
  • Cost effective

Questions & Answers

Is there a minimum age to apply 4Actioninvisible tooth correction?
Typically, with 4Action invisible tooth correction, tooth deficiencies can be corrected in the majority of adults and adolescents. However you should be at least 18 years old.

When should 4Actioninvisible tooth correction not be applied?
Only your dentist will be able to determine if you can use the 4Action invisible tooth correction.


Does this method work with an overbite?
An experienced 4Actioninvisible tooth correction handler can also correct an overbite in most cases.

Can I use 4Action invisible tooth correction despite having dental crowns?
Typically, single crowns do not affect the treatment with 4Action invisible tooth correction.

Can I usw 4Action invisible tooth correction despite having bridges?
Bridges connect two or more teeth together and therefore constitute a considerable resistance to tooth regulation. In this case, your practitioner must carefully evaluate whether you are suitable for a 4Action  invisible tooth correction treatment.

Do I have to wear a retainer after my 4Action invisible tooth correction?
A retainer is necessary after every orthodontic treatment. You should wear the retainer according to your dentist's or orthodontist's instructions. The 4Action invisible tooth correction braces can be used as a temporary retainer in many cases. Your dentist will help to provide you with information about other retainer options.

After having used a fixed brace can displaced teeth still be corrected by a 4Action invisible tooth correction?
Many 4Action invisible tooth correction patients already had a treatment with a fixed brace before. A new displacement of these teeth can usually be restored with a 4Action invisible tooth correction.


Bleaching / Night Guard



If you do not live close to one of the 4Action practices in Hamburg or Munich, you can also have your dentition printed in one of our partner practices, because the quality of the print is extremely important for the production of a 4Action mouthguard. The prints influence the fit, the wearing comfort and the safety features. Our partner practices are familiar with all details of the procedure.



Sven Clasen
Lessingstraße 14
23564 Lübeck

Phone: 0451 / 79 72 52  
Fax: 0451 / 79 89 55 2

E-Mail: service[a]



Save up to 80% with AOK

The AOK Bremen & Bremerhaven takes over 80% of costs of a 4Action mouthguard. Further information can be found in the attached AOK flyer.

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