Authors :
Dr. Swati N.Shenoy; Dr. K. S. Banga
Volume/Issue :
Volume 6 - 2021, Issue 12 - December
Google Scholar :
http://bitly.ws/gu88
Scribd :
https://bit.ly/3pM5EsE
Abstract :
Separation of an endodontic instrument in the
root canal which can neither be bypassed nor removed
poses the problem of apical micro-leakage leading to
endodontic failure. This study aimed to compare the
sealing ability of MTA and Biodentine when placed
coronal to the instrument separated in the apical region
of the root canal. Eighty-eight single-rooted human
mandibular premolars were decoronated and were
instrumented with Pro Taper Universal rotary files up to
size F2. An F3 rotary file was then scratched at 3 mm
from its tip with a tapered conical diamond point at
high-speed to weaken and intentionally break in the
canal in the apical region by binding and thereafter the
roots were randomly divided into four groups (n=22). A
4mm plug of MTA or Biodentine was compacted coronal
to the separated instrument and the rest of the canal was
obturated with gutta-percha and AH plus resin sealer
using cold lateral condensation or warm vertical
compaction technique depending on the group to which
the sample belonged. The dye penetration method was
used to measure the apical micro leakage. Data were
analyzed using one-way ANOVA test which showed a
non-significant difference in micro leakage among the
four groups (P> .058) as dye penetration values for all 4
groups were almost similar. The arrest of dye
penetration to less than half the length of both MTA and
Biodentine barrier demonstrates the good sealing ability
of both the materials.
Keywords :
Fractured instrument; Biodentine; Gutta Percha; Microleakage; Mineral Trioxide Aggregate
Separation of an endodontic instrument in the
root canal which can neither be bypassed nor removed
poses the problem of apical micro-leakage leading to
endodontic failure. This study aimed to compare the
sealing ability of MTA and Biodentine when placed
coronal to the instrument separated in the apical region
of the root canal. Eighty-eight single-rooted human
mandibular premolars were decoronated and were
instrumented with Pro Taper Universal rotary files up to
size F2. An F3 rotary file was then scratched at 3 mm
from its tip with a tapered conical diamond point at
high-speed to weaken and intentionally break in the
canal in the apical region by binding and thereafter the
roots were randomly divided into four groups (n=22). A
4mm plug of MTA or Biodentine was compacted coronal
to the separated instrument and the rest of the canal was
obturated with gutta-percha and AH plus resin sealer
using cold lateral condensation or warm vertical
compaction technique depending on the group to which
the sample belonged. The dye penetration method was
used to measure the apical micro leakage. Data were
analyzed using one-way ANOVA test which showed a
non-significant difference in micro leakage among the
four groups (P> .058) as dye penetration values for all 4
groups were almost similar. The arrest of dye
penetration to less than half the length of both MTA and
Biodentine barrier demonstrates the good sealing ability
of both the materials.
Keywords :
Fractured instrument; Biodentine; Gutta Percha; Microleakage; Mineral Trioxide Aggregate
