Dr. H. Gassen

Having a family background in dentistry, Dr. Gassen began his education with enthusiasm and a clear goal  at the well-known Austrian private university "Danube Private University (DPU)“. The connected private university clinic enabled him to expand his treatment focus in various special areas of dentistry. Since then, particularly the surgical field has developed into one of his main areas of activity. In addition to the necessary operative skills, he focuses on the sensitive handling of anxiety patients. Besides surgery, Dr. Gassen is also a fascinating practitioner, especially in the field of crown and bridge prosthetics. In particular he is motivated by the joy of feeling that the members of the CLINIUS team can make a valuable contribution to their patients well-being and health every day.


  • Study at Danube Private University in Krems, private university for dentistry 

  • Clinical dental special education at the Danube Private University 

  • Specialization in facial surgery at the university medical center in Mainz

  • Guest activity in a practice for facial surgery in Wiesbaden

  • Research and doctorate in the special dental field of endodontics, Univ. Prof. Dr. Dr. h. c. Kielbassa

Seeing the whole human being.

"It is important to see the person as a whole for a treatment to be successful. Teeth are connected to the whole organism via the bloodstream and thus have a strong influence on the patient’s well-being and general health"
– Dr. M. Marques Hager


Monday – Friday


and on occasional days

8 am – 6:30 pm

9 am - 5:30pm 

until 11 pm

CLINIUS+ Zahnärzte

Hebelstraße 19a,

79618 Rheinfelden, Deutschland

Free parking on the street for 90min.

or parking in car park (1Eur/h).

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