Impact of using single-file reciprocating system on the quality of root canal treatment treated by undergraduate students

Abstract

Abstract Introduction: The aim of this study is to evaluate the influence of using a single-file reciprocating system on the technical quality of root canal filling and treatment radiographically for cases treated by undergraduate students. Materials and Methods: This is a retrospective cross-sectional clinical study for endodontically treated teeth by 4th-year undergraduate students during the academic year 2021–2022. Root canal preparation was performed using the WaveOne Gold system with a matching single-cone gutta percha. The collected data included gender, tooth position, number of canals, and timing of treatment (the first or second semester). The quality of the root canal filling was assessed based on root canal filling length, density, and taper. The presence of ledge, apical transportation, perforation, and separated instrument were recorded. Results: The total number of teeth included in the study was 601. The length of the root canal filling was adequate in 93.51% of the teeth, underfilled in 2.82%, and overfilled in 3.66%. The density and taper were adequate in 96.5% and 98.16% of the teeth, respectively. There was no significant difference among the parameters of length, taper, density, and all procedural errors in relation to the arch type. However, there was a significant difference between anterior and premolar teeth in regards to taper, density, and overall quality of root canal filling. The overall quality of root canal treatment was acceptable in 527 teeth (87.68%), with no significant difference between the teeth (P = 0.256). Conclusion: The quality of root canal treatment performed by undergraduate students has improved with the use of a single-file reciprocating system for preparation.