DentaltownUK October/November 2019 - 28

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.

28

OCTOBER/NOVEMBER 2019 // dentaltownuk.com


http://www.pccdental.com http://www.dentaltownuk.com

DentaltownUK October/November 2019

Table of Contents for the Digital Edition of DentaltownUK October/November 2019

Cover
Table of Contents
Mike Gow: In Honor of the late Dr Anoop Maini
Howard Speaks
Message Boards: Zirconia Crowns Came Off
Office Visit: Dr Manu Dua
Why are Implants Failing?
Oral Health, Periodontal Pathogens and Carcinogenesis
Finding and Keeping the Ideal Team
A Monstrous Regiment of Women?
Students
DentaltownUK October/November 2019 - Cover
DentaltownUK October/November 2019 - Cover2
DentaltownUK October/November 2019 - Table of Contents
DentaltownUK October/November 2019 - 4
DentaltownUK October/November 2019 - Mike Gow: In Honor of the late Dr Anoop Maini
DentaltownUK October/November 2019 - 6
DentaltownUK October/November 2019 - 7
DentaltownUK October/November 2019 - Howard Speaks
DentaltownUK October/November 2019 - 9
DentaltownUK October/November 2019 - Message Boards: Zirconia Crowns Came Off
DentaltownUK October/November 2019 - 11
DentaltownUK October/November 2019 - Office Visit: Dr Manu Dua
DentaltownUK October/November 2019 - 13
DentaltownUK October/November 2019 - 14
DentaltownUK October/November 2019 - 15
DentaltownUK October/November 2019 - 16
DentaltownUK October/November 2019 - 17
DentaltownUK October/November 2019 - 18
DentaltownUK October/November 2019 - 19
DentaltownUK October/November 2019 - 20
DentaltownUK October/November 2019 - 21
DentaltownUK October/November 2019 - 22
DentaltownUK October/November 2019 - 23
DentaltownUK October/November 2019 - 24
DentaltownUK October/November 2019 - 25
DentaltownUK October/November 2019 - 26
DentaltownUK October/November 2019 - 27
DentaltownUK October/November 2019 - Why are Implants Failing?
DentaltownUK October/November 2019 - 29
DentaltownUK October/November 2019 - 30
DentaltownUK October/November 2019 - 31
DentaltownUK October/November 2019 - 32
DentaltownUK October/November 2019 - Oral Health, Periodontal Pathogens and Carcinogenesis
DentaltownUK October/November 2019 - 34
DentaltownUK October/November 2019 - 35
DentaltownUK October/November 2019 - 36
DentaltownUK October/November 2019 - 37
DentaltownUK October/November 2019 - Finding and Keeping the Ideal Team
DentaltownUK October/November 2019 - 39
DentaltownUK October/November 2019 - 40
DentaltownUK October/November 2019 - A Monstrous Regiment of Women?
DentaltownUK October/November 2019 - 42
DentaltownUK October/November 2019 - 43
DentaltownUK October/November 2019 - Students
DentaltownUK October/November 2019 - Cover4
https://www.nxtbook.com/farran/dentaltown/dentaltown-march-2024
https://www.nxtbook.com/farran/dentaltown/dentaltown-february-2024
https://www.nxtbook.com/farran/dentaltown/dentaltown-january-2024
https://www.nxtbook.com/farran/dentaltown/dentaltown-december-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-november-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-new-grad-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-october-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-september-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-august-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-july-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-june-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-may-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-april-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-march-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-february-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-january-2023
https://www.nxtbook.com/farran/dentaltown/dentaltown-december-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-november-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-october-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-new-grad-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-september-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-august-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-july-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-june-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-may-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-april-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-march-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-february-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-january-2022
https://www.nxtbook.com/farran/dentaltown/dentaltown-december-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-november-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-new-grad-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-october-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-september-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-august-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-july-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-june-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-may-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-april-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-march-2021
https://www.nxtbook.com/farran/dentaltown/dentaltown-february-2021
https://www.nxtbook.com/farran/dentaltown/2021January
https://www.nxtbook.com/farran/dentaltown/2020December
https://www.nxtbook.com/farran/dentaltown/2020November
https://www.nxtbook.com/farran/dentaltown/2020NewGrad
https://www.nxtbook.com/farran/dentaltown/2020October
https://www.nxtbook.com/farran/dentaltown/2020September
https://www.nxtbook.com/farran/dentaltown/2020August
https://www.nxtbook.com/farran/dentaltown/2020July
https://www.nxtbook.com/farran/dentaltown/2020June
https://www.nxtbook.com/farran/dentaltown/2020May
https://www.nxtbook.com/farran/dentaltown/2020April
https://www.nxtbook.com/farran/dentaltown/2020March
https://www.nxtbook.com/farran/dentaltown/2020February
https://www.nxtbook.com/farran/dentaltown/2020January
https://www.nxtbook.com/farran/dentaltown/2019December
https://www.nxtbook.com/farran/dentaltown/2019November
https://www.nxtbook.com/farran/dentaltownuk/2019OctoberNovember
https://www.nxtbook.com/farran/dentaltown/2019October
https://www.nxtbook.com/farran/dentaltown/2019NewGrad
https://www.nxtbook.com/farran/dentaltown/2019September
https://www.nxtbook.com/farran/dentaltown/2019August
https://www.nxtbook.com/farran/dentaltown/2019July
https://www.nxtbook.com/farran/dentaltownuk/2019JuneJuly
https://www.nxtbook.com/farran/dentaltown/2019June
https://www.nxtbook.com/farran/dentaltown/2019May
https://www.nxtbook.com/farran/dentaltownuk/2019AprilMay
https://www.nxtbook.com/farran/dentaltown/2019April
https://www.nxtbook.com/farran/dentaltown/2019March
https://www.nxtbook.com/farran/dentaltown/2019February
https://www.nxtbook.com/farran/dentaltownuk/2019FebruaryMarch
https://www.nxtbook.com/farran/dentaltown/2019January
https://www.nxtbook.com/farran/dentaltownuk/2018Winter
https://www.nxtbook.com/farran/dentaltown/2018December
https://www.nxtbook.com/farran/dentaltown/2018November
https://www.nxtbook.com/farran/dentaltownuk/2018November
https://www.nxtbook.com/farran/dentaltown/2018October
https://www.nxtbook.com/farran/dentaltownuk/2018October
https://www.nxtbook.com/farran/dentaltown/2018NewGrad
https://www.nxtbook.com/farran/dentaltown/2018September
https://www.nxtbook.com/farran/dentaltownuk/2018September
https://www.nxtbook.com/farran/dentaltown/2018August
https://www.nxtbook.com/farran/dentaltownuk/2018July
https://www.nxtbook.com/farran/dentaltown/2018July
https://www.nxtbook.com/farran/dentaltownuk/2018June
https://www.nxtbook.com/farran/dentaltown/2018June
https://www.nxtbook.com/farran/dentaltownuk/2018May
https://www.nxtbook.com/farran/dentaltown/2018May
https://www.nxtbook.com/farran/dentaltownuk/2018April
https://www.nxtbook.com/farran/dentaltown/2018April
https://www.nxtbook.com/farran/dentaltown/2018March
https://www.nxtbook.com/farran/dentaltownuk/2018March
https://www.nxtbook.com/farran/dentaltown/2018February
https://www.nxtbook.com/farran/dentaltownuk/2018February
https://www.nxtbook.com/farran/dentaltown/2018January
https://www.nxtbook.com/farran/dentaltown/2017December
https://www.nxtbook.com/farran/dentaltownuk/2017Winter
https://www.nxtbook.com/farran/dentaltown/2017November
https://www.nxtbook.com/farran/dentaltown/2017October
https://www.nxtbook.com/farran/dentaltownuk/2017october
https://www.nxtbook.com/farran/dentaltown/NewGrad2017
https://www.nxtbook.com/farran/dentaltown/2017September
https://www.nxtbook.com/farran/dentaltownuk/2017September
https://www.nxtbook.com/farran/dentaltownuk/2017August
https://www.nxtbook.com/farran/dentaltown/2017August
https://www.nxtbook.com/farran/dentaltown/2017July
https://www.nxtbook.com/farran/dentaltownuk/2017July
https://www.nxtbook.com/farran/dentaltown/2017June
https://www.nxtbook.com/farran/dentaltownuk/2017may
https://www.nxtbook.com/farran/dentaltown/2017May
https://www.nxtbook.com/farran/dentaltownuk/2017April
https://www.nxtbook.com/farran/dentaltown/2017April
https://www.nxtbook.com/farran/dentaltown/2017March
https://www.nxtbook.com/farran/dentaltownuk/dentaltownuk/2017march
https://www.nxtbook.com/farran/dentaltown/February2017
https://www.nxtbook.com/farran/dentaltown/2017January
https://www.nxtbook.com/farran/dentaltown/2016December
https://www.nxtbook.com/farran/dentaltown/2016November
https://www.nxtbook.com/farran/dentaltown/2016October
https://www.nxtbook.com/farran/dentaltown/2016nge
https://www.nxtbook.com/farran/dentaltown/2016september
https://www.nxtbook.com/farran/dentaltown/2016august
https://www.nxtbook.com/farran/dentaltown/2016july
https://www.nxtbook.com/farran/dentaltown/2016june
https://www.nxtbook.com/farran/dentaltown/2016may
https://www.nxtbook.com/farran/dentaltown/2016april
https://www.nxtbook.com/farran/dentaltown/2016march
https://www.nxtbook.com/farran/dentaltown/2016february
https://www.nxtbook.com/farran/dentaltown/2016january
https://www.nxtbook.com/farran/dentaltown/2015december
https://www.nxtbook.com/farran/dentaltown/2015november
https://www.nxtbook.com/farran/dentaltown/2015october
https://www.nxtbook.com/farran/dentaltown/2015nge
https://www.nxtbook.com/farran/dentaltown/2015september
https://www.nxtbook.com/farran/dentaltown/2015august
https://www.nxtbook.com/farran/dentaltown/2015july
https://www.nxtbook.com/farran/dentaltown/2015june
https://www.nxtbook.com/farran/dentaltown/2015may
https://www.nxtbook.com/farran/dentaltown/2015april
https://www.nxtbook.com/farran/dentaltown/2015march
https://www.nxtbook.com/farran/dentaltown/2015february
https://www.nxtbook.com/farran/dentaltown/2015january
https://www.nxtbook.com/farran/dentaltown/2014december
https://www.nxtbook.com/farran/dentaltown/2014decemberb
https://www.nxtbook.com/farran/dentaltown/2014november
https://www.nxtbook.com/farran/dentaltown/2014october
https://www.nxtbook.com/farran/dentaltown/2014newgrad
https://www.nxtbook.com/farran/dentaltown/2014september
https://www.nxtbook.com/farran/dentaltown/2014august
https://www.nxtbook.com/farran/dentaltown/2014july
https://www.nxtbook.com/farran/dentaltown/2014june
https://www.nxtbook.com/farran/dentaltown/2014may
https://www.nxtbook.com/farran/dentaltown/2014april
https://www.nxtbook.com/farran/dentaltown/2014march
https://www.nxtbook.com/farran/dentaltown/2014february
https://www.nxtbook.com/farran/dentaltown/2014january
https://www.nxtbook.com/farran/dentaltown/2013december
https://www.nxtbook.com/farran/dentaltown/2013november
https://www.nxtbook.com/farran/dentaltown/2013october
https://www.nxtbook.com/farran/dentaltown/2013newgrad
https://www.nxtbook.com/farran/dentaltown/2013september
https://www.nxtbook.com/farran/dentaltown/2013august
https://www.nxtbook.com/farran/dentaltown/2013july
https://www.nxtbook.com/farran/dentaltown/2013june
https://www.nxtbook.com/farran/dentaltown/2013may
https://www.nxtbook.com/farran/dentaltown/2013april
https://www.nxtbook.com/farran/dentaltown/2013march
https://www.nxtbook.com/farran/dentaltown/2013february
https://www.nxtbook.com/farran/dentaltown/2013january
https://www.nxtbook.com/farran/dentaltown/2012december
https://www.nxtbook.com/farran/dentaltown/2012November
https://www.nxtbookmedia.com