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Table 3 Complications of NiTi-RIs usage and comparisons with other instruments’ types (%)

From: Factors influencing incidents of complications while using nickel-titanium rotary instruments for root canal treatment

Complications of NiTi-RIs UseRespondents’ Classification (%)
General DentistsEndodontistsOthersTotalCumulative Total
Ledge formation18 (12.5)7 (6.7)1 (8.3)26 (10)26 (10)
Root perforation3 (2.1)2 (1.9)1 (8.3)6 (2.3)6 (12.3)
Straightening of canals9 (6.2)9 (8.7)0 (0)18 (6.9)18 (19.2)
Files wedging3 (2.1)3 (2.9)0 (0)6 (2.3)6 (21.5)
Canals’ transportation3 (2.1)6 (5.8)1 (8.3)10 (3.8)10 (25.4)
Post-operation pain9 (6.2)3 (2.91 (8.3)13 (5)13 (30)
Instruments fracture72 (50)59 (56.7)6 (50)137 (52.7)137 (83.1)
No complications27 (18.8)15 (14.4)2 (16.7)16 (16.9)260 (100)
Total144 (100)104 (100)12 (100)260 (100)
Respondents’ ClassificationWhich Instruments Caused More Complications (%)
NiTi-RIsSS hand filesThe Same rateNever had complicationsTotal
General Dentists18 (12.5)87 (60.4)30 (20.8)9 (6.2)144 (100)
Endodontists1 (1)82 (78.8)12 (11.5)9 (8.7)104 (100)
Others1 (8.3)7 (58.3)2 (16.7)2 (16.7)12 (100)
Total20 (7.7)176 (67.7)44 (16.9)20 (7.7)260 (100)