Introduction: Thorough instrumentation supported by irrigation reduces the number of microorganisms in the infected root canal. However eradication of microorganisms from canal irregularities is enhanced by using intracanal medicaments. Calcium hydroxide is widely used as intracanal medicament between treatment sessions since it has well documented antin=bacterial activity. Calcium hydroxide has various properties such as high alkalinity, antimicrobial activity and tissue dissolving ability. Any calcium hydroxide
residues on the root canal walls affect the quality of the root filling. So removal of Calcium hydroxide before obturation is mandatory.
Aim: To evaluate the efficiency of rotary instrumentation and different types of
irrigating solutions such as 5% NaOCl, 6% H202 and 2% CHX in combination with
Endovac irrigating system in removing calcium hydroxide residues from root canal system analysed using CBCT.
Methodology: Adequate number of premolars were collected. Coronal access preparation was done. Biomechanical preparation was done using rotary instrumentation. Then the canals were filled with a paste of Calcium hydroxide mixed with synthetic glycerine in a ratio of 1:1. Samples were exposed to CBCT to estimate the filled material in each tooth using software. The teeth were divided into three groups. Rotary instrumentation was done in the groups folllowed by irrigation with 5% NaOCl and Endovac in Group I,2% CHX,6%H2O2 and Endovac in Group II and 6%H2O2 and Endovac in Group III.
A second CBCT was done and volume of remaining material were estimated and statistical analysis was done.
Results: Endovac when used with 2% CHX and 6% H2O2 showed better results.
Conclusion: Complete removal of Calcium hydroxide from the root canal walls was not attained under the tested conditions and remnants of Calcium hydroxide was found in all experimental groups.
Impact Factor
2022: 6.012
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