Incidence of dentinal crack formation during root canal preparation with two NiTi instruments activated by adaptive motion and continuous rotation: an in vitro study
Journal Title: The European Research Journal - Year 2019, Vol 5, Issue 5
Abstract
Objectives: The aim of this study was to evaluate dentin crack incidence after root canal instrumentation using ProTaper Next (PT Next; Dentsply Maillefer, Ballaigues, Switzerland) and Twisted File Adaptive (TF Adaptive; Sybron Endo, Orange, California, USA) at different kinematics. Methods: Sixty human extracted premolar teeth were selected and divided into 4 main groups. Group 1: PT Next with continuous rotation (n = 15); Group 2: PT Next with adaptive motion (n = 15); Group 3: TF Adaptive with continuous rotation (n = 15); Group 4: TF Adaptive with adaptive motion (n = 15). Fifteen unprepared teeth were used as control group. Crowns of the teeth were removed and roots were sectioned at 3, 6, and 9 mm from the apex using a diamond saw. Finally root dentin pieces were evaluated under stereomicroscope at x25 magnification. Digital images were evaluated by 2 researchers. Results: No cracks were observed in the control group. In groups 2 and 4 no fracture was observed at the level of 9 mm and similarly in group 4 at 6 mm level. Group 3 showed a significantly higher dentin crack formation followed by Group 1, 2, 4 and control group respectively (p < 0.039). There was no significant difference between groups at 6 mm and 9 mm levels (p = 0.497) except for only 3 mm level (p < 0.035). Conclusions: It was concluded, both adaptive motion and continuous rotationpromoted dentinal defect. Adaptive motion produced less dentinal defects all dentin levels but there was no significant difference.
Authors and Affiliations
Erhan Erkan, Keziban Olcay, Tan Fırat Eyüpoğlu, Mustafa Gündoğar
Keywords
Related Articles
- EP ID EP628140
- DOI 10.18621/eurj.417982
- Views 88
- Downloads 0
Diagnostic utility of clinical and epidemiologic features in fever of unknown origin
Objectives: To assess the diagnostic utility of clinical features in the major diagnostic categories of Fever of unknown origin (FUO). Methods: One hundred and thirty-three patients meeting the classic criteria of FUO w...
How accurate is the urine dipstick test for diagnosing urinary tract infection?
Objectives: Urine dipstick is the first step laboratory test to diagnose a urinary tract infection (UTI) which is a common infectious disease diagnosed in the laboratories. Early treatment of UTI is very important in ord...
Autism spectrum disorders among adolescents and adults and comparison with schizophrenia
Objectives: Autism Spectrum Disorders (ASD) may be commonly misdiagnosed as schizophrenia due to common symptoms and accompanying psychotic manifestations in both adolescence and adulthood. The purpose of this study is t...
Colorectal surgery in octogenarian patients: is it safe?
Objectives. The aim of this study was to evaluate the efficiency and safety of resection for colorectal malignancy in elderly patients, by comparing the data from octogenarian (80+ years) patients with other patients of...
Mesenteric panniculitis - a rare disorder: radiological features
Objectives: The main objective of this study was to assess the key computed tomographic features of various types of mesenteric panniculitis and to assess their etiology. Methods: In this retrospective study, the radio...