The independent Quality Assessment of Dental Implants


Welcome to the CleanImplant Foundation 

The global initiative for a scientific based view on the implant market aiming for a better, cleaner and safer implantology. Your source of knowledge, background evidence and supportive network.

Implant Study 2021-2022

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Selected CleanImplant News:

Welcome to the family of clean implants!

The CleanImplant "Trusted Quality" award was presented to the CEO Dr. Ulrich Volz of Swiss Dental Solutions for the SDS2.2 ! 

The Swiss manufacturer of ceramic implants Swiss Dental Solutions has been recognized for its quality following an independent peer review process. On October 15, 2021, the certificate, signed by two members of CleanImplant's Scientific Advisory Board,  was ceremoniously presented to CEO Dr. Ulrich Volz on the occasion of the first JOINT CONGRESS for CERAMIC IMPLANTS JCCI in Kreuzlingen, Switzerland. 

The strict CleanImplant criteria of the consensus-based guideline were fully met by five different implant samples whose analyses reports eventually passed the independent peer-review. Dr. Dirk Duddeck, Managing Director and Head of Research of the CleanImplant Foundation, congratulates Dr. Ulrich Volz on the proof on this uncompromising surface quality of the implant system 2.2.  

"Fabrikneue Implantate - Steril verpackt und schon verunreinigt?" 

Webinar mit Dr. Dirk U. Duddeck (German language) 

Weder die Ankündigung rechtlicher Schritte gegen die Veröffentlichung von Analyseergebnissen noch telefonische Bedrohungen gegen die untersuchenden Wissenschaftler ändern etwas an dem Befund: Eine aktuelle Studie zur Qualitätsbeurteilung steril verpackter Implantate, die in Zusammenarbeit mit der Charité – Universitätsmedizin Berlin durchgeführt wurde, deckte unter den mehr als 100 untersuchten Proben eine alarmierende Anzahl von Zahnimplantaten mit werksseitigen Verunreinigungen auf. 

Die Folge: Im Vertrauen auf das Qualitätsversprechungen von Implantatherstellern verwenden Zahnärzte oftmals unwissentlich Implantate mit erheblichen Restverschmutzungen, die bei Patienten zu ungewollten Fremdkörperreaktionen bis hin zu Periimplantitis führen können. In Interviews mit renommierten Experten wie Prof. Tomas Albrektsson (Department of Biomaterials, Universität Göteborg) und Prof. Jack Ng (American Board of Toxicology, Universität Queensland) wird die Gefahr minderwertiger Medizinprodukte am Beispiel kontaminierter Implantate für Patienten unterstrichen. Das Webinar verdeutlicht Art und Ausmaß der Befunde, beschreibt klinischen Folge für Patienten und juristische Implikationen für Behandler, zeigt aber auch, wie solche Risiken vermieden werden können.

CleanImplant Pilot Study published

One surface characteristic of sterile packaged oral implants is their cleanliness. Oral implants may display different surface impurities of an inorganic or organic nature. These impurities may derive from the manufacturing handling and packaging processes and may remain on the commercially available implant. We are present ly lacking in knowledge of the precise clinical risks of implant impurities. However, contaminations are technically avoidable and, generally speaking, the authors assume all of us would prefer clean  implants to avoid potential problems from surface impurities.

The article describes the problem on the implant market and the need for a global quality assessment. Criteria for "clean" implants, as well as the conditions for the globally established  "Trusted Quality Mark" are discussed in detail in this paper. 

Read the full article here.

2.1 million reports of bad dental implants


June, 2019: The Food and Drug Administration - FDA - has just released two decades of previously hidden data containing millions of malfunctions by medical devices.  

This isn't the time to say "we told you so...". However, we should all be concerned, reconsider and double-check our choice of dental implant systems in the future. The question is: Can I blindly trust the information provided by the manufacturer or supplier? 

Is the implant system that I use in my dental practice safe and at least free of major impurities? CleanImplant provides precisely this data and valuable information for all members. 

When will you join us?  Read the full story here

(Kaiser Health News (KHN) is a nonprofit news service committed to in-depth coverage of health care policy and politics.)


Watch this 6 min video. It may open your eyes as a dental professional! 

Interview with Prof. Jack C. Ng, PhD, Diplomate of the American Board of Toxicology, University of Queensland, Brisbane, Australia


Inorganic and organic impurities on sterile packaged dental implants can lead to a foreign body reaction with activation of osteoclasts and a loss of bone in the follow​-up. However, this is not the only concern as some of the particles that were found on implants using ToF-SIMS analysis may even have toxic potential. As these particles and impurities are technically avoidable, we should follow the Precautionary Principle, which says: "When an activity raises threats of harm to human health, precautionary measures should be taken even if some cause and effect relationships are not fully established scientifically."

 In other words: It´s not our job to prove, that particles shown in this video are a problem for your patients. If an implant manufacturer cannot deliver his medical devices without impurities, it is the job of the manufacturer to give proof, that these impurities cause no harm. CleanImpant provides a stage for implants, that were tested "clean" and particle-free according to the guideline and established consensus.


"The very last thing your patients need right now is a contaminated implant."

 Dr. Dirk Duddeck, Implantologist and Founder of the Cleanimplant Foundation, gives answers to current questions.

March, 2020



Prof. Tomas Albrektsson: "We have to study about impurities on implant surfaces!" 

 Prof. Ann Wennerberg and Prof. Tomas Albrektsson, Members of our Scientific Advisory Board, about their motivation to support the CleanImplant project. 


How clean is your implant?

Organic contamination, SEM 500x

 It should be a matter of course that all dental implants are clean when delivered in sterile packaging. Surface pollution with organic particles or significant inorganic residues, originating from the production process are suspected to cause insufficient or missing osseointegration of dental implants. Unintended micrometer-scale particles - particually organic materials such as polyethylene - induce a foreign body reaction with multinucleated giant cells and an osteoclastogenesis that can result in a loss of bone in the early stages of osseointegration. 

For more than 10 years we have carried out four consecutive studies in close cooperation with the University of Cologne (Germany) and the Charité University Medicine Berlin (Germany).  SEM imaging as well as elemental analyses (EDS) of more than 250 dental implants from over 200 brands were used to establish one of the largest, most comprehensive databases in implant dentistry. Recent analysis in 2018 shows more implants with severe pollution, compared with previous reports.

 How many impurities can a patient tolerate? 

Alarming remnants and contaminants were found in the SEM-based quality assessment. Areal pollution and particles with iron, copper, chromium, nickel, tungsten, sulfur and large quantities of stainless-steel particles, as well as remnants of polytetrafluoroethylene and other signigficant organic contaminations give cause for concern. However, we also revealed implants with clean surfaces.   Read more

Facts matter.
CleanImplant analyzes dental implants on a regular and neutral basis in a cleanroom environment according to ISO class 5 (DIN EN ISO 14644-1) - externally audited according to international standards such as DIN EN ISO 9001:2015 and DIN EN ISO/IEC 17025. To further ensure the safety and reliability of our reports, all results are peer-reviewed by a renowned Scientific Advisory Board prior to publication.

One manufacturer of an implant whose analysis showed severe organic contamination and embedded bronze-particles wrote to us that they could "refute the results". They "kindly invited" us "to avoid spreading information that could put a negative image on the company´s reputation".

 Another manufacturer claimed that we are "melting the titanium with the energy of the scanning electron microscope" as an explantaion for the implant pollution (ironically, he had no idea how we can reach up to 1.665° C in the SEM). Another accused us of "using different sources of light (!) in the SEM" to produce unfavorable images (ignoring the fact that an SEM needs no light at all). When confronted with poor SEM analysis results, the most disturbing answer was, : "Dentists do not pay attention (for external quality assessments) or even don´t know how to interpret the results that they see." Moreover, as expected: they claimed our "research is biased". 

Well, this project is our answer to an "unhealthy state of things" and why there is a need for this global quality assessment of dental implants. 

Can dentists trust in the CE label ?

CE label and FDA clearance are supposed to be seen as quality marks. However, impurities on sterile packaged medical devices give cause for concern.

In the video: Dr. Dirk U. Duddeck, Implantologist and Managing Director of the CleanImplant Foundation speaks about possible failings of the European device regulation as studies - years after the PIP scandal - revealed masses of contaminants on sterile packaged dental implants.


A globally recognized label, the CleanImplant "Trusted Quality Mark" is the expression of a high  quality level in the cleanliness of dental implants. It will raise the awareness of considerable differences in quality and, even more importantly, give orientation for clean implants which not only practitioners but also patients may trust.

It took years to build up your reputation as an implantogist. Yet, it can be destroyed by one negligent choice of an implant. Stay on the safe side. Choose a proven implant that carries the Trusted Quality Mark. Ask us about the cleanliness of your implant system if it does not carry the mark.  Read more

 Consensus-based CleanImplant Guideline for "Clean Implants"

 In September 2017, objective evaluation criteria for the "Trusted Quality 2017-2018" award were summarized in a consensus paper by the CleanImplant Scientific Advisory Board. The document also contains a process description of the required methods of analysis and gives proof of the CleanImplant project´s transparency.

Click on the image to download the correspondent 4 MByte PDF-file.




News Archive


IDS 2021: Dental Implant Quality under Scrutiny

On-site SEM analysis of implants for dentists and demos for implant manufacturers at IDS 2021 in cooperation with Thermo Fisher Scientific


"Sterile packaged" does not mean an implant is necessarily free of contaminants. This disturbing realization is slowly dawning on dentists not only in Europe and the US. Exceeding 100.000 subscriptions on Facebook’s CleanImplant site, the number of dentists worldwide intrigued by this revelation increased tenfold over the past two years.

Transparent Testing Procedure


At the International Dental Show IDS in Cologne in September 2021, the non-profit CleanImplant Foundation based in Berlin, Germany, once again showcases the quality check of dental implants using a scanning electron microscope. Installed exclusively for this event in Hall 10.2 in collaboration with Thermo Fisher Scientific and the 'Medical Materials Research Institute', the set-up provides full transparency of the Foundation's quality assessments.

Dentists and manufacturers alike can witness the meticulous and independent quality check of dental implants in detail, from start to finish. The open and public demonstration allows spectators to learn about the extent of factory-related contamination of sterile packaged implants, and most importantly, its direct consequences. The SEM unveils whether an implant meets the strict consensus-based CleanImplant Quality Guidelines, and dentists are encouraged to participate in finding out whether what they deem the implant system used in their practice is actually safe. Read more...

A new "Trusted Quality" award: Congratulations to Biotech Dental  

A further CleanImplant Trusted Quality award for the dental implant system Kontact S produced by Biotech Dental

Following a rigorous testing process to evaluate the production quality of the French implant manufacturer Biotech Dental, the Scientific Advisory Board of the CleanImplant Foundation awarded the "Trusted Quality" seal to the Kontact S implant. This worldwide recognized award confirms the high standard of production and cleanliness of oral implant systems.

"Congratulations to Biotech Dental for its uncompromising implementation of CleanImplant's quality requirements", Dr. Duddeck, CleanImplant Founder and Head of Research underlined. "Major quality assessment studies show too many implants of inferior quality under the scanning electron microscope, contaminated with residues from the production or packaging process. But there are these great companies that set themselves apart in terms of quality with their medical devices and thus meet the quality demands of users and patients. The CleanImplant award for the Kontact S implant system is well deserved. We hope to contribute with our work to a better orientation for dentists and patients to avoid unnecessary risks and foster transparency on the implant market".

A new award for high production standard of ceramic dental implants

CleanImplant Foundation congratulates CeramTec, the Ceramic Experts ! 

On January 6, 2021, the CeramTec Group, a world innovation leader for advanced ceramics, was awarded the "Certified Production Quality" seal by the CleanImplant Foundation in Berlin. 

Based on the globally established CleanImplant consensus guideline on the cleanliness of dental implants, CleanImplant is awarding a certification to contract manufacturers, producing implants for various trade brands. The certificate not only confirms high production quality. At least twice a year, the implants' purity is also monitored through unannounced inspections in accredited testing laboratories, using a scanning electron microscope before the final packaging and sterilization process. 

"We only deliver ceramic implants to our customers that meet the very highest quality standards and are truly clean," emphasizes Dr. Hadi Saleh, CEO of the CeramTec Group. "We are pleased to be able to prove this with the current award." 

 CleanImplant Webinar REGISTER FOR FREE *    Click on the image for a preview or here to see the full version.

For the first time CleanImplant Foundation awards a ceramic implant system:

BioWin!  -  Champions-Implants 

Dental practitioners have to consider that there are differences in the production quality of titanium-made implants AND ceramic implants. After the thorough testing procedure of five BioWin! implant samples (identical to ZV3/Standard Zirkon Implantat) and the evaluation of the clinical documentation, two members of the CleanImplant Scientific Advisory Board independently confirmed in a peer-review the coveted award be issued!  

Congratulations Champions-Implants! 

Congratulations CAMLOG !

Within the framework of awarding the CleanImplant "Trusted Quality" mark we have examined the implant system CONELOG made by the manufacturer Camlog from Germany with all due care. All five samples, randomly selected, showed a clean surface in the thorough SEM analysis performed by an officially accredited testing laboratory according to DIN EN ISO/IEC 17025. We are happy to announce that the CONELOG implant system meets the strict criteria of the consensus-based CleanImplant guideline and has been awarded the "Trusted Quality Mark 2020-2022".  Welcome to the family of clean implants!


 Welcome Sweden & Martina !

We took a close look on the implant system PRAMA made by Sweden & Martina, a leading manufacturer in Italy. All five samples, randomly selected, showed a clean surface in the thorough SEM analysis performed by an officially accredited testing laboratory. We are happy to announce that the PRAMA implant system meets the strict criteria of the consensus-based CleanImplant guideline and was awarded with the "Trusted Quality Mark 2020-2021". Congratulations! 

Find more information and impressive SEM images of the PRAMA implant system here.


Trusted Qualitiy Mark for In-Kone from Global D 

2019, October| During the EAO Meeting in Lisbon, Dr. Dirk Duddeck handed over the Certificate of CleanImplant "Trusted Quality" to the management of Global D, the French manufacturer located in Lyon. After the thorough testing procedure of five implant samples and the evaluation of the clinical documentation, two members of the CleanImplant Scientific Advisory Board confirmed in a peer-review independently to issue the coveted award!  

Feedback from Colleagues


"I am a dentist in private practice in Johannesburg , South Africa. I recently attended your lecture at the SAOO congress in Durban. 

I must both thank you and compliment you on the lecture which was delivered with much humour and academic excellence, and I must commend you on your research on such a difficult and sensitive topic! Prior to your lecture I had, probably like most of my colleagues, assumed that all implants on the market were of the highest standard of cleanliness. How wrong I have been!"

Mike Holmes, South Africa

"I attended your lecture in Skopje today and I was very positively surprised by all the information you shared with us. This is a game changer in the implant business. I hope you get your work published. I think we (dentists) do not pay enough attention in the surface quality since we blindly trust the manufacturers once they gain the CE stamp."

Gorazd Danilovski, Slovenia

Read more from other colleagues here...