Zirconia Implants in Madrid
100% metal-free ceramic dental implants, placed with a biological protocol that includes the MELISA Test and ozone therapy. Over 30 years of experience in biological dentistry.
What are zirconia implants?
Zirconia implants are dental implants made from zirconium dioxide (ZrO₂), a high-strength ceramic material with a natural white colour. They are also referred to as ceramic implants or metal-free implants.
An important clarification: although zirconium (Zr) appears on the periodic table as a metallic element, what we use in dentistry is its oxide: zirconium dioxide (ZrO₂). This compound is a ceramic, not a metal. Just as sand (SiO₂) is not metallic silicon, zirconium dioxide has no metallic properties: it does not conduct electricity, does not corrode, and does not release ions. It is biologically inert and 100% biocompatible.
Their function is the same as a conventional implant: to replace the root of a missing tooth, integrating with the bone through a process called osseointegration. A ceramic crown is then placed on the implant to restore the appearance and function of the original tooth.
The fundamental difference compared to titanium is that zirconia is 100% metal-free. This eliminates the risks associated with metal alloys: galvanic corrosion, release of metal ions into the bloodstream, and hypersensitivity or allergy reactions.
Comparison
Zirconia vs. titanium implants
| Feature | Zirconia (ZrO₂) | Titanium |
|---|---|---|
| Composition | Ceramic — 100% metal-free | Metal alloy (Ti, V, Al, Ni) |
| Implant colour | Natural white | Metallic grey |
| Aesthetics with thin gums | Excellent — no shadow | Risk of grey show-through |
| Biocompatibility | Maximum — zero allergy cases | High, with sensitivity cases |
| Galvanic corrosion | Impossible (not a metal) | Possible with other metals in the mouth |
| Particle release | Does not release particles | May release titanium ions |
| Bacterial adhesion | Lower — ceramic surface | Higher comparatively |
| Thermal conductivity | Thermal and electrical insulator | Conductor |
| Osseointegration | Comparable to titanium | Historical gold standard |
| Durability | Lifetime with maintenance | Lifetime with maintenance |
Advantages
Why choose zirconia implants?
Superior aesthetics
Natural white colour eliminates the grey shadow that titanium can cause under thin gums. Indistinguishable from a natural tooth.
100% metal-free
No titanium, vanadium, aluminium, or nickel. Zero risk of galvanic corrosion or ion release.
Maximum biocompatibility
There are no documented cases of allergy to zirconia. The material of choice following a positive MELISA Test.
Lower bacterial adhesion
The ceramic surface reduces plaque accumulation, lowering the risk of peri-implantitis over time.
Proven strength
Flexural strength and fracture toughness that match or exceed titanium. Designed to last a lifetime.
No biological interference
Does not generate electric fields, does not act as an electromagnetic antenna, and produces no galvanic currents. Biologically inert.
Your treatment
Our biological implant protocol
Every step designed from the perspective of biological restorative dentistry.
Comprehensive diagnosis
Full evaluation with radiography, bone study, and microbiological analysis. When indicated, we request the MELISA Test from a specialised laboratory to verify your compatibility with different materials.
Personalised planning
We design your treatment plan: optimal implant position, type of restoration, and surgical protocol. We always prioritise minimal invasion.
Minimally invasive surgery
The zirconia implant is placed under local anaesthesia. After placement, we apply ozone therapy to enhance disinfection and accelerate natural healing.
Osseointegration
A healing period of 3 to 6 months while the implant integrates with your bone. We monitor the process with regular check-ups.
Ceramic crown placement
Once osseointegration is confirmed, we place the final ceramic crown. The result is a fully metal-free tooth, indistinguishable from a natural one.
Who should consider zirconia implants?
Zirconia implants are suitable for any patient who needs to replace missing teeth. They are especially recommended for:
Patients with metal sensitivity or allergy: if the MELISA Test confirms hypersensitivity to titanium, zirconia is the safe alternative.
Thin or receding gums: the white colour prevents the grey shadow that titanium causes when gum tissue is thin.
Autoimmune conditions: scientific studies have linked the presence of metals in the body with the worsening of conditions such as multiple sclerosis, rheumatoid arthritis, lupus, fibromyalgia, and Alzheimer's disease. Zirconia reduces toxic load and immune stress.
Anyone seeking metal-free dentistry: for patients who want dental care that respects the body's natural balance.
Why Bio Salud Dental
Why travel to Madrid for zirconia implants?
Pioneers since 1992
Dr. Alejandro Castillo began practising biological dentistry in Madrid when few others in Spain would. Today his son, Dr. Carlos Castillo, continues the legacy. Over three decades of specialised experience.
MELISA Test + Ozone therapy
We verify material biocompatibility before placing implants and apply ozone therapy post-surgery to accelerate healing. This is not standard practice at most clinics.
Every case personally reviewed
No associates, no intermediaries. Dres. Castillo personally study your case and perform every surgery. International patients travel to see them for this reason.
Frequently asked questions
What you should know
Zirconia implants are dental implants made from zirconium dioxide (ZrO₂), a high-strength ceramic material with a natural white colour. They replace the root of a missing tooth and integrate with the bone through osseointegration, just like titanium implants, but without any metal.
Zirconium (Zr) is a metallic element on the periodic table, but what we use in dentistry is its oxide: zirconium dioxide (ZrO₂). This compound is a ceramic, not a metal. It does not conduct electricity, does not corrode, does not release ions, and is 100% biocompatible.
Zirconia eliminates the risks associated with metal implants: galvanic corrosion, metal ion release into the bloodstream, and hypersensitivity reactions. Zirconia also offers superior aesthetics (no grey shadow under thin gums), lower bacterial adhesion, and does not act as an electromagnetic antenna.
The MELISA Test (Memory Lymphocyte Immunostimulation Assay) measures hypersensitivity to metals, chemicals, and infectious agents. We recommend it before choosing implant materials. If it confirms sensitivity to titanium, zirconia implants are the safe alternative.
Zirconia implants are designed to last a lifetime with proper maintenance and regular check-ups. Zirconium dioxide is one of the strongest ceramic materials available, with osseointegration rates comparable to titanium.
Considering zirconia implants?
Share your dental case with Dres. Castillo for a personal assessment. We review every case individually and will contact you within 48–72 hours.