Wunderschönes Lächeln • Praxis Dr. Sacha Ryf
Kieferorthopädie Biel Bienne Schweiz
Invisalign Diamond Apex

Welcome to Dr. Sacha Ryf

your specialist practice for invisible treatment of misaligned teeth using INVISALIGN aligners in Biel/Bienne. For 25 years, we have been helping children, teenagers and adults achieve their most beautiful smiles – gently, effectively and individually.

My name is Sacha Ryf and I am a specialist dentist for orthodontics (CH).
For 25 years, it has been our vision and our daily enthusiasm and motivation to give everyone a beautiful smile!

As one of the most modern and innovative orthodontic practices in Switzerland, with experience from over 1,000 successfully completed treatments and, since 2025, also among the top 300 worldwide (Global Top 300), we are the experts in invisible teeth correction for children, teenagers and adults. By using state-of-the-art artificial intelligence, we also offer virtual checks that enable even more efficient treatment – with

Quality and Warmth

Ideally, children should have their first consultation before the age of 9 – adults up to the age of 99. You can always come to us for a consultation without a referral from your dentist.

We are very familiar with both classic and the latest techniques for effective and efficient tooth alignment correction and growth influence of the face and jaw – for age-appropriate, gentle and individual treatment for your beautiful smile!

Together with our friendly team, including orthodontists Dr. Karin Frey and Dr. Patrizia Fehlbaum, we take great pleasure in ensuring that you, as a family or as a patient, feel comfortable with us at every stage of your treatment.

Dr. Sacha Ryf Fachzahnarzt für Kieferorthopädie (CH)
Invisalign Diamond • Angel Aligner • SPARK • Aligner
Kieferorthopädie Biel Orthodontie Bienne 
Ortho Seeland

The most frequent questions in June 2025 FAQ

Frequent questions – Aligner vs. Braces


What are Aligners ?

Aligners are transparent, clear splints that enable corrections to be made to misaligned teeth and jaws. Using a digital simulation of the desired result, the necessary small intermediate steps are calculated and the aligners are then custom-made for you.


What are the advantages of aligners compared to fixed braces?

Aligners are removable, virtually invisible and make dental care easier. Thanks to digital 3D planning, tooth movements are very gentle, biological and effective, and usually require fewer emergency appointments than braces.


Are aligners as effective as braces?

Yes! For most misalignments, modern aligners achieve the same results as fixed appliances – often even faster, because each splint is optimised virtually and digitally before treatment begins.


Why should I choose Dr. Sacha Ryf’s practice ?

We are an Invisalign Diamond Provider and have already successfully completed over 1,000 aligner cases. This experience, combined with modern 3D diagnostics, offers maximum planning reliability and beautiful, stable results.


How long does aligner treatment take compared to braces?

On average, 6–18 months. This is often shorter than with braces because several tooth movements are programmed in parallel. However, the exact duration depends on the individual’s initial situation.


How do I care for aligners properly?

Rinse each aligner under lukewarm water after meals and clean it once a day with the small ultrasonic cleaning device we provide. When you are on the go, you can clean the aligners with a soft toothbrush. This will keep the aligners clear and odourless.

 


What effect does removing attachments or brackets have on tooth enamel?

None visible, provided that the enamel surface was intact beforehand and the recommended hygiene measures were implemented. To remove the attachments or bonded brackets, we use the gentlest polishing methods possible to keep the tooth surface intact. (Study of Dr. Sacha Ryf, 2012, European Journal of Orthodontics 34 (2012) 25–32).

ALIGNER (INVISALIGN® )

BRACES (SPEED®)

Children

A first appointment with us is recommended before the 9th birthday. In this way, jaw misalignments can be recognised in good time and growth can be influenced favourably. We will be happy to give you comprehensive advice and support you and your child as you enter the world of orthodontics.

Adolescents

The time after the change of teeth is ideal for most orthodontic treatments. The jaw is still shapeable, growth can be influenced and all teeth can be moved into the optimum position. Young people are increasingly opting for the discreet version with clear aligners.

Adults

Tooth alignment corrections are always possible! Let us specialists give you comprehensive advice on which treatment options can be reliably realised for your individual requirements. Because we offer so many different options, you benefit from an ideal price-performance ratio with a long-term guarantee.