Dentinal Microcracks and Endodontics: a Longitudinal Study Using Synchrotron-Computed Tomography

IADR Abs ac A chi es
Den inal Mic oc acks and Endodon ics: a Longi udinal S udy Using
Synch o on-Compu ed Tomog aphy
Objec i es: This s udy assessed he de elopmen o den inal mic oc acks ollowing oo
canal ea men using synch o on adia ion-based mic o-compu ed omog aphy (SR-
mic oCT).
Me hods: Twen y ex ac ed mola s (10 maxilla y and 10 mandibula ) we e selec ed,
scanned, and e alua ed o he p esence o den inal mic oc acks a 3 expe imen al imes:
Day 1/baseline ( ee h we e in ac ); Day 2/a e oo canal cleaning and shaping; and Day
3/a e oo canal ob u a ion. Mic oc acks we e dened as all c ack lines obse ed in he
c oss-sec ional iew ex ending om he canal lumen o he den in/cemen um. Tee h we e
p epa ed using P oTape Gold® o a y ins umen s (Den sply, Si ona) and ob u a ed using
he cold la e al compac ion echnique wi h gu a-pe cha poin s and zinc oxide-based
seale . SR-mic oCT a he 05ID-2 beamline a he Canadian Ligh Sou ce wi h a 46 keV
monoch oma ic X- ay beam was used o scan he samples. CT econs uc ion o he
samples was p ocessed using he so wa e UFO-KIT and he 3D and c oss-sec ional images
we e independen ly analysed wi h ImageJ so wa e by wo ained and calib a ed
examine s o de ec he p esence o den inal mic oc acks. Da a was desc ip i ely epo ed
( equency and pe cen ages).
Resul s: Fi e mic oc acks appea ed in 3 mola s a e cleaning & shaping (Day-2). Th ee new
mic oc acks (one in each mola ) appea ed in dis inc samples a e ob u a ion (Day 3). The
majo i y o mic oc acks in he maxilla y mola s we e loca ed in he mesiobuccal oo , and
hal o he mic oc acks in mandibula mola s we e loca ed in he mesial oo .
Conclusions: Roo canal ea men may induce he c ea ion o e y ew mic oc acks in
mola oo s which may no be clinically ele an because a cumula i e-nega i e eec o
oo canal p ocedu es was no obse ed (since he mic oc acks appea ed in some samples
a e shaping and in die en samples a e ob u a ion). A complex canal ana omy was
linked wi h de ec s o ma ion. SR-Mic oCT may be conside ed he op imal ool o his ype
o in es iga ion.
Di ision:
Mee ing: 2023 AADOCR/CADR Annual Mee ing (Po land, O egon)
Loca ion: Po land, O egon
Yea : 2023
Final P esen a ion ID: 1092
Abs ac Ca ego y|Abs ac Ca ego y(s): Pulp Biology and Regene a ion
10/6/24, 4:05 PM
Den inal Mic oc acks and Endodon ics: a Longi udinal S udy Using Synch o on-Compu ed Tomog aphy IADR Abs ac A chi es
h ps://iad .abs ac a chi es.com/abs ac /52am-3816292/den inal-mic oc acks-and-endodon ics-a-longi udinal-s udy-using-synch o on-compu ed- om…
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Au ho s
Bigsby, B ad ( Uni e si y o Saska chewan , Saska oon , Saska chewan , Canada )
Ding, Xiao Fan ( Uni e si y o Saska chewan , Saska oon , Saska chewan , Canada )
Zhu, Ning ( Uni e si y o Saska chewan , Saska oon , Saska chewan , Canada )
A denghi, Diego ( Uni e si y o B i ish Columbia , Vancou e , B i ish Columbia ,
Canada )
G azzio in, Rena a ( Uni e si y o B i ish Columbia , Vancou e , B i ish Columbia ,
Canada )
Financial In e es Disclosu e: NONE
SESSION INFORMATION
In e ac i e Talk Session
Pulp Biology and Regene a ion II
F iday, 03/17/2023 , 02:00PM - 03:30PM
Abs ac A chi es (h ps://www.abs ac a chi es.com) © 2024 PLANe Sys ems G oup (h p://www.plane sg.com)
10/6/24, 4:05 PM
Den inal Mic oc acks and Endodon ics: a Longi udinal S udy Using Synch o on-Compu ed Tomog aphy IADR Abs ac A chi es
h ps://iad .abs ac a chi es.com/abs ac /52am-3816292/den inal-mic oc acks-and-endodon ics-a-longi udinal-s udy-using-synch o on-compu ed- om…
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