Dr Rolly s. Agarwal

Dr Rolly s. AgarwalResultsEvaluation of canal transportation

2Evaluation of canal transportation Formula : (A1-A2) (B1- B2) Where A1- Shortest distance from the mesial edge of the curved root to the mesial edge of the uninstrumented canal B1 - shortest distance from distal (furcation) edge of the curved root to the distal edge of the uninstrumented canal A2 - shortest distance from the mesial edge of the curved root to the mesial edge of the instrumented canal B2 - shortest distance from distal (furcation) edge of the curved root to the distal edge of the instrumented canal.3Degree of transportation : Determined by calculating the absolute values that resulted from the above formula.4

Direction of transportation: Positive value ---transportation lateral to the curvature.

Negative value ---transportation in the direction facing the furcation.

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Evaluation of centering ability

Mean Centering Ratio:

(A1 - A2) / (B1 - B2)

Or

(B1 - B2) / A1 - A2)

A result of '1' indicates perfect centering. If these numbers are not equal, the lower figure is considered the numerator of the ratio. 6Preparation TimeTime of shaping included instrumentation, irrigation, and instrument cleaning.7

Statistical AnalysisData obtained were compared using ANOVA one-way analysis of variance and students t-test with 0.05 level of significance.8

Results

One One-Shape file showed macroscopic deformation after use.

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3 mm9 mm6 mmMEAN TRANSPORTATION (mm) OF THE CANALSGroup (n=20)3 mm(meanSD)6 mm(meanSD)9 mm(meanSD)Group I (PT)0.060.040.090.050.190.08Group II (OS)0.050.030.070.040.120.07Group III (WO)0.060.040.080.040.130.063 mm: On comparing the groups, it was found to be statistically not significant6 mm: On comparing the groups, it was found to be statistically not significant9 mm: Group I Vs. Group II Significant (p < 0.05) Group I Vs. Group III - Significant (p < 0.05) Group II Vs. Group III Not significant (p > 0.05)CENTERING RATIOGroup (n=20)3 mm(meanSD)6 mm(meanSD)9 mm(meanSD)Group I (PT)0.630.200.570.210.470.16Group II (OS)0.670.240.550.240.540.24Group III (WO)0.640.230.570.240.550.18No statistical significant difference was seen in the centering ratio between the three instrumentation techniques (p > 0.05)PREPARATION TIMEGroup (n=20)Preparation Time (sec)(meanSD)Group I (PT)106.00 11.09Group II (OS)57.05 3.73Group III (WO)60.15 4.98Group I Vs. Group II Significant (p < 0.05)Group I Vs. Group III - Significant (p < 0.05)Group II Vs. Group III Not significant (p > 0.05)