Biological dentistry in Madrid for international patients
Bio Salud Dental is an English-speaking biological dental clinic in Madrid. Patients travel from across Europe, the UK and the US for metal-free implants, safe amalgam removal and full rehabilitations — with a treatment plan agreed before they travel, and help organising their trip.
Why patients travel to us
International patients don't come to Madrid to cut corners — they come for the right treatment. Many reach us after being given an aggressive, all-metal or implant-heavy plan elsewhere, looking for a genuinely biological, metal-free approach and a team experienced in complex, full-mouth cases.
With a free Second Opinion, Dres. Castillo review your case personally and tell you honestly what they would — and would not — do, before you commit to anything.
Biological dentistry since 1992
Dr. Alejandro Castillo — trained in Medicine, Surgery and Stomatology in Madrid and Paris — began practising biological dentistry in 1992, and today he treats patients alongside his son, Dr. Carlos Castillo: a father-and-son team with over three decades of specialised expertise.
100% metal-free
Zirconia implants, ceramic restorations, BPA-free composites, ozone therapy, MELISA biocompatibility testing and safe amalgam removal. No metals, no mercury, no compromise.
Treated personally by Dres. Castillo
No associates, no intermediaries. The doctors study your documentation and carry out your treatment themselves — the reason international patients with complex cases choose to travel to us.
From abroad
How it works when you travel
Free online Second Opinion
Share your case, history and X-rays through our form. Dres. Castillo review everything personally and reply within 48–72 hours, in English.
A clear plan before you travel
You receive a detailed treatment plan and a fixed quote — with flexible payment options — so you know exactly what will be done and how many days you need. We help you organise your trip and where to stay.
Treatment, then follow-up
Your appointments are grouped to complete as much as possible in a short stay. After you return home, we stay in contact and guide your recovery, with generous support between stages.
A real story
She travelled from Switzerland
Wendelyn came to us from Switzerland with a complex case — infected root canals, corroded titanium implants and metal-ceramic crowns affecting her whole-body health. After several consultations and a clear plan agreed before she travelled, she had a full metal-free rehabilitation with us in Madrid.
Frequently asked questions
International patients: your questions answered
Yes. Dres. Castillo and our team treat international patients in English, so your consultations, treatment plan and follow-up are all handled in English from the first message to the last appointment. Other languages are available too.
For genuine biological, metal-free expertise and experience with complex, full-mouth cases. Bio Salud Dental has practised biological dentistry since 1992, and Dres. Castillo treat every case personally, with no intermediaries. Many patients come for an honest second opinion after being given an aggressive or all-metal plan elsewhere.
Yes. The process starts with a free online Second Opinion. Dres. Castillo review your case and X-rays personally and give you a detailed plan and a fixed quote, in English, before you book any travel — so there are no surprises when you arrive.
It depends on your case, but treatment is planned to be completed in as few visits as possible, concentrated over a short stay. We tell you the exact number of days and appointments in your plan before you travel, and we help you organise the trip.
Yes. We help you plan your visit: how to reach Madrid and our two clinics, where to stay nearby, and how to fit your appointments into a short, well-organised trip.
We offer flexible payment options, including instalments for larger treatments such as full rehabilitations and zirconia implants. You receive the full breakdown with your quote before you travel.
Start with a free Second Opinion
Share your case with Dres. Castillo. We review it personally and reply within 48–72 hours with an honest assessment — and, if we can help, a clear plan and quote before you travel.