A Smile
Is the Beginning
of Great Change
Uśmiech
to początek
wielkich zmian
We are a team of dental enthusiasts who combine the precision of science with heart and empathy. The clinic was founded by three experienced experts — Łukasz Lassmann, Marta Lassmann, and Monika Teślak-Piesyk — who are fully dedicated to caring for the health and comfort of every patient. We have created a specialized aesthetic dentistry clinic, where patients not only receive the highest standard of care but also experience a sense of safety, genuine kindness, and a welcoming atmosphere. Our goal is to provide a comprehensive range of dental services in one place, meeting every patient’s need with precision, care, and professionalism.
Why Patients Choose Us?
We combine top-quality aesthetic dentistry with a warm, friendly environment where patients feel comfortable and cared for at every stage of their treatment.
Beauty Without Compromise
We specialize in creating smiles that appear untouched by a dentist — natural, harmonious, and beautifully balanced.
A Comprehensive Approach
Our patients benefit from the expertise of a multidisciplinary team, including surgeons, orthodontists, physiotherapist, osteopath, and a certified medical hypnotist specializing in pain management through hypnosis.
Comfort and Privacy
Our recovery room and private zones ensure peace and relaxation at every stage of treatment. Personalized care from a dedicated patient coordinator and access to our clinic’s mobile app allow patients to track their treatment progress and stay in constant contact with our team.
Our Vision
Our vision is to create a dental clinic that sets new standards in modern dental care — a place where knowledge, advanced technology, and a personalized approach come together to provide patients with healthy, beautiful smiles that last a lifetime.
We strive to be a leader in the field of dentistry, offering services based on the latest achievements in medicine and innovative technological solutions. Our goal is to build lasting relationships with our patients — founded on trust, genuine care, and a deep understanding of their individual needs.
We are also committed to promoting oral health as a key component of overall well-being and to raising public awareness in this area. We want our clinic to be a place where patients feel comfortable, confident, and safe — a place they look forward to returning to and recommending to others.
United by Passion
We are a team driven by commitment, knowledge, and a shared purpose — caring for the healthy, beautiful smiles of our patients.
What Our Patients Say
What Our Patients Say About One&Only Clinic.
A modern clinic run by true dental enthusiasts. It’s great to find a place you actually want to come back to — as strange as that may sound when it comes to dentists 🙂
Bartosz Bacia
January 2026
As a patient, I am truly impressed by the competence of the doctors working there, as well as physiotherapist Mateusz Potoczny. The level of care is absolutely top-tier.
Justyna Stelina
October 2025
Professionalism, commitment, and patient care at the highest level. I wholeheartedly recommend this clinic.
Zuzanna Szelestowska
December 2025
I highly recommend a visit to the pediatric dentist. My 4-year-old was delighted. The approach to children is 10/10 🙂
Patrycja Stasiak
October 2025
Here, everyone absolutely knows what they’re doing. I’ve already been treated by three outstanding specialists at this clinic, from Dr. Lassman to Dr. Lopana and Dr. Wierchoła.
Robert Puzdrowski
June 2025
This is a place created by people with immense passion, fantastic knowledge, and impressive experience. You can feel that you’re in the best hands – the staff approaches patients with empathyand full professionalism.
Beata Ślązak
May 2025
Knowledge, professionalism, dedication, and attentiveness to others – that’s all it takes to be sure you’re in the best place you could be and feel well cared for. Dr. Łukasz Lassmann is an absolutely outstanding specialist.
Karina Paź
April 2025
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Gentle care,
focused on your comfort