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Press release…

• New material increases the choice of treatment options with small diameter implants
• Roxolid combines higher tensile and fatigue strengths1 with excellent
• osseointegration2 and is designed to increase reliability and confidence with small diameter implants
• Less invasive treatment using smaller implants is expected to increase patient acceptance of implant solutions
• More than 6300 Roxolid implants in controlled release program and international clinical trials
• Roxolid Ø3.3mm Bone and Tissue Level implants are now available in the US and Canada; European launch to follow in the coming weeks

Basel/Boston 14 September 2009: At the 2009 Annual Meeting of the American
Academy of Periodontology (AAP) currently taking place in Boston, Straumann
announced the full market launch in North America of its new high performance dental
implant material Roxolid™. Straumann Ø3.3mm Bone and Tissue Level implants are
now available in the new material in the US and Canada, offering customers a new
level of confidence with small diameter implants. Ø3.3mm implants currently generate
approximately 15% of the company’s global implant sales.
Higher tensile and fatigue strengths combined with the excellent
osseointegration of SLActive
Roxolid™ is an alloy of titanium and zirconium and has been designed specifically for
dental implants. Its name conveys the concept of natural physical strength combined
with solidity (osseointegration).
Rigorous tests in Straumann laboratories have shown that the new material has higher
fatigue and tensile strength than pure titanium (grade 4 annealed and cold worked), the
current material of choice for dental implants. In addition, preclinical study results have
indicated that bone integrated with Roxolid better than with pure titanium (grade 4)3.
The combination of enhanced strength and osseointegration opens the door for a new
generation of small diameter implants, which may be particularly advantageous in
situations where there is limited space between teeth, and when preserving existing
bone and vascular supply is important. A further potential advantage could be the use
in thin alveolar bone.
Straumann’s largest prelaunch clinical program to date
Engineered and developed by Straumann, Roxolid has been undergoing a broad
program of clinical trials in 9 countries, the first of which began almost 2 years ago.
Involving 60 centers and more than 300 patients, this is one of the largest clinical
research programs ever undertaken by a dental implant company prior to market
launch. Based on reports to date, the implant survival rate exceeds 99%. In addition,
Roxolid has been made available to 450 selected specialists in a controlled release
program, in which more than 6300 implants have now been distributed.
Initial clinical reports have already been presented by lead investigators at recent major
congresses4,5,6,7, including a review of the scientific evidence and clinical application by
Professor Hans-Peter Weber (Chair of the Department of Restorative Dentistry and
Biomaterials Sciences at Harvard School of Dental Medicine) at the AAP, currently
taking place in Boston.
Although Straumann obtained regulatory clearance several months ago, the company
chose not to launch Roxolid until the available data from preclinical and clinical trials,
including 12-month results from completed studies, had been reviewed by a Clinical
Advisory Board of independent experts. On the basis of their unanimous
recommendation, Straumann is proceeding with a full market launch, beginning in
North America, the world’s largest market for dental implants. Roxolid will also become
available to doctors and patients in Europe in the coming weeks.
The need for high performance materials
Pure titanium is well known for its biological compatibility with the human body and its
resistance to corrosion. The discovery that bone integrates with titanium
(osseointegration) opened the way for its use in orthopedic surgery and subsequently
in implant dentistry, where its physical properties were also important in order to bear
the very strong forces of chewing. However, the mechanical properties are limited in
the case of small diameter implants or parts, which are needed for narrow spaces. This
prompted the use of alternative materials, such as titanium alloys (e.g. Ti-6Al-4V,
‘TAV’), but additional strength came at the price of impaired osseointegration due to
inferior biocompatibility and surface characteristics8,9,10,11.
According to published research4, titanium and zirconium are the only two metals
commonly used in implantology that do not inhibit the growth of osteoblasts, the bone
forming cells that are essential for osseointegration. In contrast, the alloy of titanium
and vanadium (TAV) has been shown to compromise osseointegration10,11.
Furthermore, TAV cannot accommodate the sophisticated microstructuring processes
required for Straumann’s third generation SLActive® surface technology, which
enhances osseointegration.
Excellent osseointegration with the SLActive surface
Surface texture, purity and hydrophilicity are important contributors to optimal
osseointegration and successful implant outcomes. In 2005, Straumann introduced its
third generation implant surface technology SLActive, which cut implant
osseointegration times in half to 3-4 weeks from 6-8 weeks, which was the benchmark
established by SLA®12. Since its launch, more than a million SLActive implants have
been sold and it has set a benchmark for enhanced osseointegration.

Initial results from large clinical program

In a prospective pilot clinical trial, which is still ongoing, Ø3.3mm Roxolid implants were
placed in 22 patients. One-year data were presented at the Europerio Congress in
Stockholm, including bone level measurements, which showed bone gain in 50% of the
patients13.

A multicenter double-blind randomized study also is underway in 8 European centers
with more than 90 patients. The one-year follow-up data, which are currently being
evaluated, will be presented at forthcoming scientific meetings.
A non-interventional clinical study is also underway with more than 400 implants placed
in 230 patients in Europe and North America. More than 50% of the patients in this
study have been followed for 6 months or more.

The potential of smaller implants
In the future, high strength, small diameter implants with enhanced osseointegration
properties are expected to offer a number of advantages to dental professionals and
patients, including: enhanced esthetics, broader treatment options, shorter treatment
times and reduced costs. This is important as patients often fear implant treatment
because of the associated pain, time, and cost. Straumann believes that Roxolid will
therefore increase the general acceptance of implant dentistry and will contribute to
further enhancing confidence among practitioners placing implants.

About Straumann
Headquartered in Basel, Switzerland, the Straumann Group (SIX: STMN) is a global
leader in implant and restorative dentistry and oral tissue regeneration. In collaboration
with leading clinics, research institutes and universities, Straumann researches,
develops and manufactures dental implants, instruments, prosthetics and tissue
regeneration products for use in tooth replacement and restoration solutions or to
prevent tooth loss. Straumann currently employs approximately 2200 people worldwide
and its products and services are available in more than 70 countries through its broad
network of distribution subsidiaries and partners.
Straumann Holding AG, Peter Merian-Weg 12, 4002 Basel, Switzerland.
Phone: +41 (0)61 965 11 11 / Fax: +41 (0)61 965 11 01
E-mail: investor.relations@straumann.com or corporate.communication@straumann.com
Homepage: www.straumann.com
Contact:
Mark Hill, Corporate Communication Fabian Hildbrand, Investor Relations
+41 (0)61 965 13 21 +41 (0)61 965 13 27
Disclaimer
This release contains certain “forward-looking statements”, which can be identified by the use of
terminology such as “to follow”, “will”, “potential”, “would”, “may”, “should”, “confidence”, “future”,
“expected”, “believes”, “increase”, “enhance”, or similar wording. Such forward-looking statements reflect
the current views of management and are subject to known and unknown risks, uncertainties and other
factors that may cause actual results, performance or achievements of the Group to differ materially from
those expressed or implied. These include risks related to the success of and demand for the Group’s
products, the potential for the Group’s products to become obsolete, the Group’s ability to defend its
intellectual property, the Group’s ability to develop and commercialize new products in a timely manner,
the dynamic and competitive environment in which the Group operates, the regulatory environment,
changes in currency exchange rates, the Group’s ability to generate revenues and profitability, and the
Group’s ability to realize its expansion projects in a timely manner. Should one or more of these risks or
uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary
materially from those described in this release. Straumann is providing the information in this release as of
this date and does not undertake any obligation to update any forward-looking statements contained in it
as a result of new information, future events or otherwise.

Photographs and further information
Photographs for journalistic use and further information are available on request from
Straumann Corporate Communication.
1 Compared with grade 4 annealed and cold worked titanium; data on file, comparing material with
specifications from standard ASTM F67
2 Thoma D et al. ‘Evaluation of a new titanium-zirconium dental implant. A comparative radiographic study
in the canine mandible‘ Oral presentation at the 24th Annual meeting of the Academy of
Osseointegration (AO), San Diego
3 Gottlow J et al. Preclinical data presented at the 23rd Annual meeting of the Academy of
Osseointegration (AO), Boston, February 2008, and at the 17th Annual Scientific Meeting of the
European Association for Osseointegration (EAO), Warsaw, September 2008
4 Stone P. Experience new confidence and freedom with small diameter implants. European Federation of
Periodontology 6th Congress, Stockholm, Sweden, 4-6 June 2009.
5 Thoma DS. Evaluation of a new titanium-zirconium dental implant. A comparative radiographic study in
the canine mandible. Academy of Osseointegration 24th Annual Meeting, San Diego, CA, USA, 26-28
February 2009; Abs. SO4.
6 Gottlow J. Make a difference with the next generation implant properties. European Association for
Osseointegration 17th Annual Scientific Meeting, Warsaw, Poland, 18-20 September 2008.
7 Barter S. New reduced diameter implants for wider clinical options. European Association for
Osseointegration 17th Annual Scientific Meeting, Warsaw, Poland, 18-20 September 2008.
8 Steinemann S. Peridontol 2000 1998;17:7-21
9 Wong M et al. J. Biomed Mater Res 1995;29:1567-1575
10 Stenport VF, Johansson CB. Clin Implant Dent Relat Res. 2008, 10:191-9
11 Johansson CB et al. Int J Oral Maxillofac Implants 1998;13:315–321
12 Oates TW et al. Int J Oral Maxillofac Implants 2007;22:755-760
13 Stone P. Clinical data presented at the EuroPerio 2009, Stockholm, June 2009