A research paper entitled “Evaluation of Apical Debris Extrusion, Unprepared Wall Areas, and Dentinal Crack Formation After Root Canal Preparation Using ProTaper Next, ProTaper Ultimate, and R-Motion File Systems” has been published by Assistant Professor Dr. Ahmed Hamid Ali, Head of the Restorative and Esthetic Dentistry Department, and Master’s student Haider Abbas from the College of Dentistry, University of Baghdad, in collaboration with Professor Francesco Mannocci from King’s College London (KCL), UK.
The paper appeared in the Journal of Endodontics (USA), published by the American Association of Endodontists, ranked sixth among the world’s top ten journals in dentistry.
Study aim:
To evaluate and compare the amount of apically extruded debris, unprepared wall surface areas, and dentinal crack formation resulting from root canal preparation using different file systems.
Methodology:
- Laboratory experiments were conducted on extracted teeth.
- Advanced computer software was used to measure apically extruded debris and unprepared wall areas.
- Dentinal cracks resulting from root canal preparation were assessed using three-dimensional imaging techniques, allowing indirect measurement without damaging the teeth.
Results:
- No statistically significant differences were found among the three file systems in terms of debris extrusion or the number of apical/dentinal cracks.
- The unprepared wall surface areas were similar across all systems, except for ProTaper Ultimate, which showed the smallest unprepared apical surface area.
- PTU files demonstrated higher effectiveness in preparing the apical third by reducing unprepared wall surfaces in the root canal.
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