Dentaltown October 2019 - 68
by Gordon J. Christensen,
DDS, MSD, PhD
Gordon J.
Christensen,
DDS, MSD, PhD,
is in private
prosthodontic
practice in Provo,
Utah. Christensen
is the CEO and
founder of the CR
Foundation, the
CEO of Practical Clinical Courses, an adjunct
professor at the University of Utah School of
Dentistry, and a diplomate of the American
Board of Prosthodontics. Information:
pccdental.com
Why Are
Implants
Failing?
The possible causes are many and more
research is needed-and in the interim,
dentists should try to retain natural teeth
In the 1950s, titanium implants-"fixtures," as named by the inventor-were introduced
to medical professionals by Dr. Per-Ingvar Branemark, a Swedish physician. However, the
concept named "osseointegration" was generally rejected by his medical colleagues; it was
not until about 1982 that the concept started to be thought to be a useful one, subsequent
to a well-received program in Toronto.
Before this time, numerous forms of dental implants had been introduced with varying
success, but the titanium root-form osseointegrated implant concept looked very promising.
Many dentists, including myself, eagerly became educated in implant techniques and
started placing and restoring primarily edentulous patients. The concept grew rapidly,
and advancements and refinements of the materials and techniques followed. Since then,
millions of implants have been placed and restored with success. The advent of titanium
implants has been one of the most significant introductions into dentistry in my long career.
But in recent years-more than 30 since their introduction-a relatively serious
challenge has been observed and is causing concern in the profession. From the same
geographic location that titanium root-form implants were introduced, conditions now
named peri-implantitis and peri-implant mucositis have been observed and documented
in numerous journals, including in the Journal of Dental Research.1 The JDR article states
that of patients who had received implants nine years earlier, 45% of those studied had
peri-implantitis (bleeding on probing/suppuration and bone loss >0.5mm). Moderate/severe
peri-implantitis (bleeding/suppuration and bone loss >2mm) was diagnosed in 14.5%.
What factors may be causing these degenerative conditions? I have about 35 years of
experience placing and restoring implants and can identify many of the potential causes
of the current dilemma with implants.
The purpose of this article is to critically observe the many potential variables that
may contribute to peri-implantitis and peri-implant mucositis and to make suggestions for
readers relative to their future involvement with dental implants.
68
OCTOBER 2019 // dentaltown.com
http://www.pccdental.com
http://www.dentaltown.com
Dentaltown October 2019
Table of Contents for the Digital Edition of Dentaltown October 2019
Dentaltown October 2019 - Intro
Dentaltown October 2019 - Cover1
Dentaltown October 2019 - Cover2
Dentaltown October 2019 - 1
Dentaltown October 2019 - 2
Dentaltown October 2019 - 3
Dentaltown October 2019 - 4
Dentaltown October 2019 - 5
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Dentaltown October 2019 - Cover3
Dentaltown October 2019 - Cover4
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