DentaltownUK Winter 2017 - 33

One size shouldn't fit all

systems that can shape every canal to

Our root-canal shaping objectives
have evolved based on the results
of bacterial removal and irrigation
penetration studies, as well as clinical
guidelines to facilitate obturation. Many
clinicians base their go-to endodontic
shapes on this literature, on popular
opinion or even on "radiographic
aesthetics." Endodontic shapes are
less often determined by the root canal
anatomy of the individual tooth being
treated.
Cookbook recipes are available
for standardized root canal shapes.
We now have one-file-does-it-all rotary

the perfect universal shape. Shape, clean,
pack ... done!
But what if the perfect shape is
simply not universal or flat-out wrong?
Is it necessary to hollow out a root as
much as we've been doing to predictably
save a tooth? Is it possible that too
much shape can be detrimental in
some cases-or in all cases? What if
there was more than one way to skin
a cat, and the cat might live a longer,
happier life the other way?
Article continues on p. 35

Check out
Dr. Boehne's
award-winning
practice!
The Office Visit feature in
the August 2017 issue of
Dentaltown gives readers
a peek at Dr. Daniel J.
Boehne's endodontics
practice in Dana Point,
California, which won
a national design
competition. Take your
tour at dentaltown.com.

Case 1

T

his tooth, which I evaluated in
2008, had a major impact on
the way I view shaping teeth.
Tooth #4 presented with a previous
RCT with a chronic apical abscess.
Accepted and appropriate root canal
shapes were used in this tooth, but
the case had failed. It turned out
that a longitudinal root fracture was
present.
The fracture may or may not have
been a direct result of the root shapes.
Other factors influence root fractures,
including propagation of existing coronal
fractures, post space preparation, metal
posts and occlusion. The eye-opening
finding was the strip perforation into
the furcal concavity of the buccal root,
created by a root shape that is typically
accepted as "appropriate" for this tooth.
This case is an example of an unforeseen
iatrogenic failure. I believe that with
today's technology, the hazards of this
type of case can be recognized and
treated successfully. ■

dentaltownuk.com \\ WINTER 2017

33



http://www.dentaltown.com http://www.dentaltownuk.com

Table of Contents for the Digital Edition of DentaltownUK Winter 2017

Cover
Meet the Team
Editorial with Mike Gow
Howard Speaks
Continuing Education Update
Continuing Education Update
BACD News
Show Your Work
Message Boards-Implants
The Icing on the cake
Conteporary Endodontics
BACD Meetings
Message Boards-Advice on Broken #29
Shifting Tides
Time Out
Through the Keyhole
Mouth Guards
Lifestyle
Students
Work/Life Balance
Wish List
DentaltownUK Winter 2017 - Cover
DentaltownUK Winter 2017 - Cover2
DentaltownUK Winter 2017 - 3
DentaltownUK Winter 2017 - 4
DentaltownUK Winter 2017 - Meet the Team
DentaltownUK Winter 2017 - Editorial with Mike Gow
DentaltownUK Winter 2017 - 7
DentaltownUK Winter 2017 - Howard Speaks
DentaltownUK Winter 2017 - 9
DentaltownUK Winter 2017 - Continuing Education Update
DentaltownUK Winter 2017 - 11
DentaltownUK Winter 2017 - Continuing Education Update
DentaltownUK Winter 2017 - 13
DentaltownUK Winter 2017 - 14
DentaltownUK Winter 2017 - BACD News
DentaltownUK Winter 2017 - 16
DentaltownUK Winter 2017 - 17
DentaltownUK Winter 2017 - Show Your Work
DentaltownUK Winter 2017 - 19
DentaltownUK Winter 2017 - 20
DentaltownUK Winter 2017 - 21
DentaltownUK Winter 2017 - Message Boards-Implants
DentaltownUK Winter 2017 - 23
DentaltownUK Winter 2017 - 24
DentaltownUK Winter 2017 - 25
DentaltownUK Winter 2017 - 26
DentaltownUK Winter 2017 - 27
DentaltownUK Winter 2017 - 28
DentaltownUK Winter 2017 - 29
DentaltownUK Winter 2017 - The Icing on the cake
DentaltownUK Winter 2017 - 31
DentaltownUK Winter 2017 - Conteporary Endodontics
DentaltownUK Winter 2017 - 33
DentaltownUK Winter 2017 - 34
DentaltownUK Winter 2017 - 35
DentaltownUK Winter 2017 - 36
DentaltownUK Winter 2017 - BACD Meetings
DentaltownUK Winter 2017 - 38
DentaltownUK Winter 2017 - 39
DentaltownUK Winter 2017 - Message Boards-Advice on Broken #29
DentaltownUK Winter 2017 - 41
DentaltownUK Winter 2017 - 42
DentaltownUK Winter 2017 - Shifting Tides
DentaltownUK Winter 2017 - 44
DentaltownUK Winter 2017 - 45
DentaltownUK Winter 2017 - Time Out
DentaltownUK Winter 2017 - 47
DentaltownUK Winter 2017 - Through the Keyhole
DentaltownUK Winter 2017 - 49
DentaltownUK Winter 2017 - Mouth Guards
DentaltownUK Winter 2017 - 51
DentaltownUK Winter 2017 - Lifestyle
DentaltownUK Winter 2017 - 53
DentaltownUK Winter 2017 - 54
DentaltownUK Winter 2017 - 55
DentaltownUK Winter 2017 - 56
DentaltownUK Winter 2017 - 57
DentaltownUK Winter 2017 - Students
DentaltownUK Winter 2017 - 59
DentaltownUK Winter 2017 - 60
DentaltownUK Winter 2017 - Work/Life Balance
DentaltownUK Winter 2017 - 62
DentaltownUK Winter 2017 - 63
DentaltownUK Winter 2017 - Wish List
DentaltownUK Winter 2017 - Cover3
DentaltownUK Winter 2017 - Cover4
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