Comparison of Micro Leakage in Root Canals Containing Separated Rotary Instruments using MTA and Biodentine Barrier – An in-vitro study


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

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

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