Can you be allergic to titanium?
For years, titanium was considered a completely inert and hypoallergenic material. However, the scientific evidence accumulated over the past two decades shows that titanium sensitivity exists and is more common than previously thought.
It is important to distinguish between allergy (an immediate type I reaction) and hypersensitivity (a delayed type IV reaction). Reactions to dental titanium are usually type IV -- more subtle, harder to diagnose, and more frequent.
Symptoms of dental titanium sensitivity
Symptoms can be local (around the implant site) or systemic (affecting the whole body):
Local symptoms: persistent inflammation around the implant, chronic pain that does not subside, accelerated bone loss around the implant (peri-implantitis), persistent gingival redness or swelling, and in severe cases, failure of osseointegration.
Systemic symptoms: chronic fatigue, muscle and joint pain, skin rashes, digestive problems, recurrent headaches, and exacerbation of pre-existing autoimmune conditions.
How is it diagnosed?
Titanium hypersensitivity is diagnosed using the MELISA Test, a laboratory test that measures the reaction of T lymphocytes to titanium and other metals. It is the only scientifically validated test for detecting type IV metal hypersensitivity.
At Bio Salud Dental, we recommend the MELISA Test as part of our diagnostic protocol before placing implants, and we refer the patient to a specialised laboratory -- precisely to avoid placing a material to which they may be sensitive.
What alternatives are available?
The direct alternative to titanium implants is zirconia implants (zirconium dioxide, ZrO₂). These are 100% ceramic implants, entirely metal-free, with maximum biocompatibility and no documented cases of allergy.
If you already have titanium implants and suspect sensitivity, the first step is to perform the MELISA Test to confirm the diagnosis. Based on the results, a personalised treatment plan can then be designed.
Prevention is better than cure
The best strategy is prevention: performing the MELISA Test before the placement of any metal implant. This simple blood test can save you years of problems and the need to remove and replace a failed implant.
Frequently asked questions
What you should know
Type IV titanium hypersensitivity is estimated to affect between 0.6% and 6% of the population, according to different studies. It is not rare, especially among patients with a tendency towards allergies or autoimmune conditions.
Yes. Zirconia implants are the direct alternative: 100% ceramic, metal-free, and with success rates comparable to titanium. There are no known cases of zirconia allergy.
Yes. The test can be performed at any time and is useful for confirming or ruling out sensitivity if you are experiencing suspicious symptoms around existing implants.
Keep reading
Related articles
What is the MELISA Test? Everything you need to know
The test that detects metal hypersensitivity. How it works, what it measures, and why it matters before getting an implant.
Zirconia vs. titanium implants: a complete guide
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A point-by-point comparison: materials, diagnosis, treatment philosophy, and patient-centred approach.
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