6533b828fe1ef96bd12879ea
RESEARCH PRODUCT
Cutting efficiency of heat-treated nickel-titanium single-file systems at different incidence angles.
Stefania PasqualeErnesto RapisardaDavid E. JaramilloGuido La RosaEugenio PedullàAnna Maria GueliLeopoldo FornerPietro La PagliaGiusy Rita Maria La RosaFabio Lo Saviosubject
Dental InstrumentsHot Temperatureincidence angle0206 medical engineeringStatistical differencecutting efficiency02 engineering and technology03 medical and health sciencesReciprocating motion0302 clinical medicineNickelStatisticsMaterials TestingGeneral DentistryIncidence (geometry)MathematicsTitaniumheat treatmentIncidenceSignificant difference030206 dentistryEquipment Designreciproc blue020601 biomedical engineeringNickel titaniumHeat treatedreciprocationCalipersRoot Canal Preparationdescription
Cutting efficiency of Reciproc R25 (REC) and Reciproc blue R25 (REB) at different inclinations was evaluated. Sixty new files were tested at 90°, 70° and 45° of inclination in relation to the sample (n = 10), using a customised machine. All files were activated in reciprocation against standardised gypsum blocks for 120 s. Cutting efficiency was determined by measuring the block weight loss with an analytical balance and measuring the length of the block surface cut using a digital calliper. Data were statistically analysed (two-way ANOVA, Bonferroni t-test) with the significance level set at P < 0.05. There was no difference for REC among the tested angles. REB had no statistical difference between 90° and 70°; however, its cutting efficiency significantly increased at 45°. There was a significant difference between REC and REB at 45° only. Under these conditions, increased file inclination to 45° and blue heat treatment improved cutting efficiency of reciprocating files.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-08-08 | Australian endodontic journal : the journal of the Australian Society of Endodontology IncReferences |