27 March 2023: Lab/In Vitro Research
Effects of Autoclave Sterilization on Cyclic Fatigue Resistance in 5 Types of Rotary Endodontic Instruments: An In Vitro Study
Nenad Stošić 1ABDEF* , Jelena Popović 1ABDEF , Marija Anđ , elković Apostolović 2CD , Aleksandar Mitić 1DEF , Marija Nikolić 1BEF , Radomir Barac 1EF , Milena Kostić 3ABFDOI: 10.12659/MSM.939694
Med Sci Monit 2023; 29:e939694
Table 1 Mean values of the number of cycles to fracture (NCF) and fragment length (FL) after different autoclave sterilization cycles in canals with a curvature with 2 different radii.
| NiTi* | No. of cycles | NCF±SD** | FL±SD*** | ||||
|---|---|---|---|---|---|---|---|
| Radius 2 mm | Radius 5 mm | p | Radius 2 mm | Radius 5 mm | p | ||
| ProTaper Universal | 0 | 353.25 ±9.57 | 363.25 ±13.36 | 0.047 | 4.18 ±0.64 | 4.41 ±0.63 | 0.382 |
| 1 | 354.00 ±14.54 | 362.00 ±104.93 | 0.154 | 4.16 ±0.57 | 4.55 ±0.58 | 0.111 | |
| 3 | 353.58 ±11.91 | 357.00 ±24.37 | 0.436 | 5.00 ±0.86 | 5.34 ±0.36 | 0.297 | |
| 5 | 344.75 ±16.48 | 354.00 ±15.25 | 0.168 | 5.07 ±0.82 | 5.16 ±0.54 | 0.752 | |
| BioRace | 0 | 910.00 ±37.25 | 1299.91 ±100.73 | 5.40 ±0.37 | 5.30 ±0.48 | 0.675 | |
| 1 | 894.75 ±13.24 | 1283.00 ±107.85 | 4.89 ±0.43 | 4.99 ±0.61 | 0.648 | ||
| 3 | 1660.00 ±103.76 | 2022.00 ±177.89 | 3.30 ±0.33 | 4.69 ±0.55 | |||
| 5 | 980.00 ±127.42 | 1800.00 ±80.92 | 5.30 ±0.27 | 5.38 ±0.87 | 0.411 | ||
| ProTaper Next | 0 | 1256.00 ±101.25 | 1280.00 ±51.43 | 0.472 | 2.92 ±0.37 | 3.40 ±0.19 | 0.001 |
| 1 | 1258.91 ±99.97 | 1283.16 ±51.85 | 0.464 | 2.90 ±0.43 | 3.44 ±0.23 | 0.001 | |
| 3 | 1230.00 ±33.69 | 1280.00 ±267.87 | 0.008 | 2.95 ±0.41 | 3.80 ±0.63 | 0.001 | |
| 5 | 1210.00 ±208.39 | 1750.00 ±373.01 | 3.30 ±0.31 | 4.30 ±0.49 | |||
| Twisted File | 0 | 1446.00 ±33.11 | 2075.00 ±296.18 | 4.10 ±0.30 | 4.48 ±0.44 | ||
| 1 | 1439.50 ±27.31 | 2030.67 ±67.05 | 4.11 ±0.28 | 4.46 ±0.42 | 0.028 | ||
| 3 | 1250.00 ±66.60 | 1916.00 ±62.03 | 2.89 ±0.12 | 4.40 ±0.38 | |||
| 5 | 1208.00 ±133.04 | 1458.00 ±100.00 | 2.90 ±0.29 | 4.10 ±0.48 | |||
| HyFlex CM | 0 | 7486.66 ±1062.08 | 9106.75 ±463.25 | 5.40 ±0.65 | 5.70 ±0.83 | 0.339 | |
| 1 | 7552.00 ±1115.98 | 9127.00 ±1115.49 | 5.33 ±0.61 | 5.62 ±0.74 | 0.309 | ||
| 3 | 8583.50 ±408.34 | 10558.16 ±1133.87 | 5.20 ±0.57 | 5.35 ±0.61 | 0.554 | ||
| 5 | 9683.66 ±967.72 | 12151.41 ±1094.97 | 4.10 ±0.76 | 4.88 ±0.78 | 0.021 | ||
| * Nickel-titanium; ** number of cycles to fracture (NCF)±standard deviation; *** fragment length (FL)±standard deviation. | |||||||