Izvorni znanstveni članak
https://doi.org/10.15644/asc59/2/1
Changes in the Surface Area and Volume of Hyflex EDM Instruments after Multiple Uses
Neslihan Büşra Keskin
orcid.org/0000-0002-1053-7675
; Sveučilište Yıldırım Beyazıt, Stomatološki fakultet, Zavod za endodonciju, Ankara, Turska
*
Taha Özyürek
; Sveučilište Bahçeşehir, Stomatološki fakultet, Odjel za endodonciju, Istanbul, Turska
Zeliha Uğur Aydin
; Sveučilište Sağlık bilimleri, Stomatološki fakultet, Zavod za endodonciju, Ankara, Turska
Ferhat Geneci
; Sveučilište Yıldırım Beyazıt, Medicinski fakultet, Zavod za anatomiju, Ankara, Turska
Mert Ocak
; Sveučilište u Ankari, Medicinski fakultet, Odjel za anatomiju, Ankara, Turska
Hakan Hamdi Çelik
; Sveučilište Hacettepe, Medicinski fakultet, Zavod za anatomiju, Ankara, Turska
Dilek Helvacioglu-Yigit
orcid.org/0000-0001-5999-9726
; Sveučilište Katar, Stomatološki fakultet, QU Health, Katar
* Dopisni autor.
Sažetak
Objective: The aim of the study was to evaluate the surface areas and volumes of HyFlex EDM (HEDM) nickel-titanium (NiTi) files before and after multiple uses in mandibular molar root canal preparation. Materials and methods: Twelve HEDM files with sizes of 10/.05 and 25/.08 were evaluated by micro–CT before and after a single use or multiple uses in root canal preparation. The mesiobuccal and mesiolingual root canals of thirty-six human mandibular molar teeth were instrumented using twelve 10/.05 (300 rpm and 1.8 Ncm) and twelve 25/.085 Ncm) HEDM files according to the manufacturer’s recommendation. HEDM files were evaluated using micro–CT at four different timelines: 1) Intact file,
2) After instrumentation of one canal, 3) After instrumentation of two canals, and 4) After instrumentation of three canals. Each group’s volume and surface area were analyzed by applying Friedman’s test. Each group comparison was assessed using the Wilcoxon signed-rank test with Bonferroni correction. Results: Intact HEDM 10/.05 and HEDM 25/.08 files showed significantly larger volumes and surface areas compared to the used instruments (p < 0.05). Conclusions: A significant decrease in the
volume and surface area of the NiTi files was observed as the number of uses increased regardless of the file group. These findings emphasize the importance for clinicians to understand the structural changes in HEDM files during repeated use to ensure safe instrument reuse and prevent endodontic treatment failure.
Ključne riječi
Root Canal Preparation; Dental Instruments; Equipment Failure Analysis; HyFlex EDM; Micro–CT; Surface area; Volume
Hrčak ID:
332181
URI
Datum izdavanja:
19.6.2025.
Posjeta: 1.006 *