CHOICE OF IRRIGANT SOLUTION FOR ACCURATE MEASUREMENT OF ROOT CANAL WORKING LENGTH BY ELECTRONIC APEX LOCATOR IN EXTRACTED HUMAN TEETH.
DOI:
https://doi.org/10.33279/jkcd.v13i2.181Abstract
Objective: The objective of this ex-vivo study is to compare the mean working length (in terms of accurate length) with different intra-canal irrigant solutions in extracted teeth.
Materials and Method: This experimental ex-vivo study was conducted in the Operative dentistry department at Rehman College of Dentistry Peshawar, from January 2019 to June 2019. Sample size was calculated using WHO sample size calculator V.2.0 (1.1) with 95 % confidence interval and 90 % power of study by using statistics of electronic WL of sodium hypochlorite (NaOCl) of 18.84+2.5313 and 19.33+2.50 for Chlorhexidine13. Non-probability sampling technique was used. Sample size of 120 extracted single-rooted human permanent teeth were selected. The Actual root canal lengths and electronic lengths were calculated in an ex-vivo model using alginate as a medium to replicate periodontal tissues in the presence of irrigants for each group. All readings were recorded in the Performa. Data was analysed using SPSS version 17 for descriptive statistics. One way ANOVA was used to compare the four groups for overall irrigant effect. For all comparisons, statiscal significance was considered at p<0.05.
Results: There was a statistically significant difference in the means of actual length and electronic lengths as determined by one-way ANOVA (P=0.001). In terms of accuracy, 2% CHX was most accurate showing a difference of -0.18 between actual and electronic lengths as compared to 17% EDTA -0.47, 5.25% NaOCl -0.53 and normal saline -0.53.
Conclusion:
It can be concluded that Root ZX can be safely used to determine WL within + 0.5mm of the actual length. Among irrigating solutions, Root ZX EAL gave best results with chlorhexidine gluconate.
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