Biological & Aesthetic Dentistry · Freienstein
General & Biological Dentistry
Prophylaxis · Surgery · Implants · Aesthetics · Orthodontics – under one roof, metal-free as standard, with time for every person.

5.0 on Google54 reviews · Excellent.
Parking at the practice
Weiherstrasse 24, Freienstein · 10 min from Bülach
Our services
What we offer
Six areas, one standard: gentle, biocompatible and individually planned.
General dentistryCheck-ups, fillings, children, dental anxiety.Learn more →
Biological dentistryMetal-free, amalgam removal, focal sanitation.Learn more →
ProphylaxisTeeth cleaning, dental hygiene, vital cleaning.Learn more →
Surgery & implantsCeramic implants, wisdom teeth, PRF, 3D diagnostics.Learn more →
AestheticsVeneers, whitening, crowns, gums.Learn more →
OrthodonticsBraces and aligners for children, teenagers and adults.Learn more →Every person brings different circumstances.That is why we do not work to fixed patterns.
Dr. med. dent. Jousef Siouri, M.Sc., M.Sc.
Master in implantology and oral surgery · Master in restorative and aesthetic dentistry

Studies and doctorate in implantology at RWTH Aachen, followed by several years in private practices in Germany and Switzerland. From this, an own approach has emerged: minimally invasive, biologically compatible and with the whole organism in view.
For every treatment the rule applies: you fully understand the diagnosis and your options before a decision is made.
«There are no standard solutions – only the solution for the person sitting in front of me.»
People who take their time
Dental hygiene, prophylaxis, assistance and reception work hand in hand. Click a face to meet the person – who does what here, and since when.
Ronny K.
1 week ago
Absolutely top-notch – expertise meets genuine human empathy! I underwent a very complex and demanding recession treatment on two molars with Dr. Siouri at the BioAesthetic practice in Freienstein. The procedure lasted around two hours – a real test of patience, during which, as a patient, you naturally go through a lot mentally, and your mind often runs wild before and during the treatment (especially with such lengthy and difficult procedures). This is precisely where Dr. Siouri stands out from many others: He not only perfectly understands his craft at the highest level, but also has a keen sense for the psychology of the patient. He takes anxieties seriously, exudes tremendous calm, and meets you where you are mentally – this applies to adults with dental anxiety just as much as to sensitive patients or children facing major procedures. You immediately notice that the focus here is on the person, not just the medicine. After about two hours of hard work, I am incredibly grateful for the result and the empathetic care. If you're looking for a dentist who combines top-notch performance with genuine empathy, Dr. Siouri and his team in Freienstein are the perfect choice. Thank you so much for this masterful and caring treatment! ⭐️⭐️⭐️⭐️⭐️
Eric D.
3 weeks ago
I have been a patient at this practice for over 30 years and have always been satisfied with the treatment. The new dentist, Dr. Siouri, who has taken over the practice, is a competent successor, and I am very happy with his treatment. I can wholeheartedly recommend this practice.
Cornelia B.
1 month ago
Highly recommended, friendly and competent.
Alanah G.
1 month ago
I went to the practice for a dental cleaning and I'm completely satisfied. The entire team was very friendly, professional, and attentive. The treatment was carried out meticulously, and everything was explained clearly. You feel comfortable and well cared for from the very beginning. The practice itself is also very modern and pleasant. I'll gladly come back and can definitely recommend the practice! 😊
Christian B.
1 month ago
Friendly, efficient and competent
Tony M.
2 months ago
Friendly welcome, good information and advice beforehand, perfect treatment, all without pain. Dr. Siouri's dental practice deserves the highest recommendation.
Peter R.
2 months ago
Highly recommended dental practice in Freienstein; reliable and competent; in addition to the existing team, the new dentist, Dr. med. dent. Siouri, is also impressive.
Hiltebrand O.
2 months ago
I had a tooth pulled yesterday and was naturally a little nervous beforehand. But from the very first moment, I felt I was in excellent hands. Mr. Siouri is extremely competent, works calmly, and explains everything clearly. The procedure was professional and much more pleasant than I had expected. The entire practice team is incredibly friendly, warm, and attentive. I was particularly impressed that they even called me today to ask how I was doing after the treatment. This kind of care is rare these days. I felt completely comfortable and very well looked after. Many thanks to the entire team for the outstanding treatment and excellent service. I will gladly return and can wholeheartedly recommend this practice!
christine L.
3 months ago
I'm very happy with everything. Friendly staff 💐🙋♀️
Tanja L.
3 months ago
very friendly
Christof C.
3 months ago
A very pleasant team. The procedure was quick and painless. I would gladly recommend Dr. Siouri's practice.
Angelika K.
3 months ago
Dr. Siouri is a bio-aesthetic dentist who is both friendly and competent. The consultation was helpful and informative. Before I can begin the restoration, my bite needs to be corrected. I received a night guard for this. Even after the first night, my jaw muscles felt more relaxed. I think that the TMD symptoms will gradually subside and my bite will return to its original position. The practice team is also friendly and helpful. I feel very comfortable in this rural practice. There is ample parking in front of the building.
Your first visit
How your visit works
So you know what to expect – from the first click to aftercare.
Book an appointment
Online via our website in two minutes – or by phone at 044 865 65 60.
First consultation
Around 30-60 minutes for anamnesis and examination, X-ray diagnostics if needed.
Treatment plan
Options, procedure and costs explained transparently – you decide in your own time.
Treatment
Biological and minimally invasive, with personal aftercare.
We look forward to seeing you
- Address
- Zahnarztpraxis Freienstein
Weiherstrasse 24
8427 Freienstein-Teufen - Phone
- 044 865 65 60
- [email protected]
- Hours
- Monday to Friday 08:00–12:00 and 13:00–17:00
Once a month on Saturdays – visible in the online booking. - Emergency
- Outside opening hours: call 044 865 65 60, you will be forwarded.
- Getting here
- Parking directly at the practice · Bus from Bülach and Embrach, stop Freienstein.
Zahnarztpraxis Freienstein stands for biological and aesthetic dentistry: zirconia ceramic implants, safe amalgam removal, veneers and whitening, 3D diagnostics, and compassionate care for children and anxious patients, under general anaesthesia on request. The practice is located in Freienstein in the canton of Zurich and is easily reachable from Winterthur, Bülach, Embrach, Kloten and the entire Zurich Unterland.







