Skip to main content

Table 2 Patterns of NiTi-RIs’ Discard Strategy & Associated Factors (%)

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

Main Discard StrategyRespondents’ Classification (%)
General DentistsEndodontistsOthersTotal
Number of uses according to teeth type51 (35.4)43 (41)4 (33.3)98 (37.5)
Number of use regardless teeth type36 (25)22 (21)2 (16.7)60 (23)
When distorted15 (10.4)1 (1)2 (16.7)18 (6.9)
Period of time regardless teeth type3 (2.1)6 (5.7)0 (0)9 (3.4)
Single use in severely curved canal18 (12.5)29 (27.6)2 (16.7)49 (18.8)
Number of uses according to files’ size9 (6.3)1 (1)0 (0)10 (3.8)
Period of time according to files’ size3 (2.1)0 (0)0 (0)3 (1.1)
Loss of cutting efficiency9 (6.3)3 (2.9)2 (16.7)14 (5.4)
Total144 (100)105 (100)12 (100)261 (100)
Respondents’ ClassificationSingle case2–5 cases6–10 casesMore than 10 casesTotal
Discard Strategy after performing RCTs in Anterior teeth (%)
 General Dentists018 (35.3)27 (52.9)6 (11.8)51 (100)
 Endodontists033 (76.7)10 (23.3)0 (0)43 (100)
 Others02 (50)2 (50)0 (0)4 (100)
 Total053 (54.1)39 (39.8)6 (6.1)98 (100)
Discard Strategy after performing RCTs in Posterior teeth (%)
 General Dentists9 (17.6)33 (64.7)6 (11.8)3 (5.9)51 (100)
 Endodontists30 (69.8)13 (30.2)0 (0)0 (0)43 (100)
 Others2 (50)2 (50)0 (0)0 (0)4 (100)
 Total41 (41.8)48 (49)6 (6.1)3 (3.1)98 (100)