TY - JOUR TI - Effect of Using Rotational and Reciprocating Single File Systems with Different Tapered Coronal Flaring Instruments on Dentinal Crack Formation: An In Vitro Study AB - Objective: The purpose of this study was to evaluate the effect of using single-file with different tapered coronal flaring files on dentinal crack. Material and Methods: Human extracted mandibular premolars (n=128) were selected and divided into four groups (n=32) based on the coronal flaring instruments; Group 1, One Flare; Group 2, Endoflare; Group 3, Gates Glidden Drills; Group 4, Control Group. Specimens divided into four subgroups based on the single file system (n=8): Subgroup A, HyFlex EDM: Subgroup B, Reciproc Blue: Subgroup C, One Shape: Subgroup D, WaveOne Gold. All roots were then sectioned at 3, 6, and 9 mm from the apex. The sections were inspected under a stereo-microscope at 2.5X and 5X to determine the presence of microcracks. The data were analyzed using the chi-square test (p=0.05). Results: There was no statistically significant difference between the distributions of dentinal cracks caused by the use of single-file systems with different coronal flaring files (p>0.05). There was no statistically significant difference between the distributions of dentinal cracks according to single file systems (p>0.05). There was also no statistically significant difference between the distributions of dentinal cracks according to coronal flaring files (p>0.05). Conclusion: The use of coronal flaring instruments combinations with single file systems reduced the observation of dentin cracks. One Flare files caused less dentinal cracks than the other instruments test. AU - Evrendilek, Furkan AU - KADI, Gizem AU - Özlek, Esin DO - 10.5336/dentalsci.2021-82764 PY - 2022 JO - Türkiye Klinikleri Diş Hekimliği Bilimleri Dergisi VL - 28 IS - 1 SN - 1300-7734 SP - 105 EP - 112 DB - TRDizin UR - http://search/yayin/detay/521903 ER -