About us
Modern dentistry in Zurich Enge
Dental11 is a dental practice a few steps from Sihlcity. In a calm, digital setting we combine precise dentistry with personal care.

What we stand for
Calm, transparent, clear
Transparency
Public price list and a written cost estimate on request.
Only what you need
We recommend what makes medical sense and discuss alternatives openly.
Time to explain
Findings and treatment options are explained clearly, in your language.
Open to everyone
A respectful practice for all communities, including LGBTQ+, families, students and newcomers to Switzerland.

Dentist and owner
MDDr.(CZE) Polydefkis Papaioannou
After studying dentistry at Charles University in Prague, he gained clinical experience in Germany and Switzerland, including at KU64 in Berlin and Zahnarztzentrum.ch. In 2020 to 2021 he completed the endodontics curriculum of the DGET. That is why saving your own tooth is central at Dental11. He also brings experience in digital dentistry with CAD/CAM and CEREC.
- Focus
- Saving teeth & endodontics, aesthetics, ClearCorrect, digital dentistry
- Qualification
- MDDr. (Charles University Prague), Endodontics curriculum (DGET)
- Languages
- Greek, English, German
- since 01/2025 · Lead dentist, Zahnärzte im Stadtturm, Baden
- 2022 to 2024 · Dentist, Zahnarztzentrum.ch
- 2016 to 2021 · Dentist in practices and clinics in Berlin
- 2015 · Licence to practise dentistry, Berlin
- 2009 to 2014 · Dentistry studies, Charles University Prague

Specialist in oral surgery
Dr. med. dent. Sofia-Maria Belouka
When a tooth can no longer be saved, a wisdom tooth causes problems or bone needs to be built up before an implant, surgical experience matters. Dr. Belouka has been a specialist in oral surgery since 2011 and joined Dental11 in 2026. For her doctoral thesis at the Charité she studied bone substitute materials in sinus lifts.
- Focus
- Oral surgery, implantology, bone grafting, wisdom teeth
- Recognition
- MEBEKO Switzerland (2022), SSO member, CBCT certified
- Languages
- Greek, German, English
- since 2026 · Oral surgeon, Dental11 Zurich
- since 2024 · Oral surgeon and implantologist, Beyond Dental, Bern
- 2022 to 2026 · Oral surgeon and implantologist in Küsnacht ZH and Wettingen
- 2008 to 2015 · Research associate, Charité Berlin
- 2001 to 2006 · Dentistry studies, University of Athens

Dental assistant EFZ
Mabinta Bojang
Mabinta Bojang welcomes you at Dental11 and books your next appointment with you. She completed her training as a dental assistant EFZ in the canton of Zurich in 2025 and brings experience from general dentistry, pediatric dentistry, orthodontics and surgery.
- Tasks
- Assistance, X-rays, digital impressions (3Shape), hygiene, reception
- At Dental11
- since May 2026
- Languages
- German, English, Mandinka
Google reviews
What patients say
Rated “Excellent”, based on 37 Google reviews.
Get to know us
A first check-up is a good start. Mondays and Tuesdays until 20:00.