Abstract
BackgroundIn recent years, pediatric endodontics has witnessed various advances including use of rotary files in pulpectomy. This study aimed to comparatively evaluate taper, amount of dentin removal and instrumentation time of the pediatric rotary Kedo-S Square file, hand K-files and H-files in primary canines using cone beam computed tomography (CBCT).Methods60 primary canines were randomly assigned into three groups; A1 Kedo-S-Square rotary file (group I), hand stainless steel K file (group II) and hand stainless steel H file (group III). Teeth were mounted in vinyl poly siloxane impression material templates to be scanned before and after instrumentation by CBCT scans using Ondemand 3D software. Shaping ability of the files were evaluated in terms of taper of the canal and amount of dentin remaining of each group. Instrumentation time was recorded using a digital stopwatch.ResultsKedo-S Square removed a significantly less amount of dentin in both apical (P < 0.002) and coronal thirds (P < 0.014). Taper of the preparations showed significant differences as Kedo-S Square file showed good taper in maximum number of root canals, while maual K- and H-files showed poor taper in maximum number of root canals (P < 0.0001). Rotary Kedo-S Square files required less instrumentation time (P < 0.0001).ConclusionThe use of rotary Kedo-S Square files resulted in better conservation of tooth structure, superior tapering ability and least instrumentation time compared to hand K- and H-files.
Highlights
In recent years, pediatric endodontics has witnessed various advances including use of rotary files in pulpectomy
Ni–Ti rotary files were first introduced in pediatric endodontics by Barr et al in 2000 through use of Profile 0.04 taper rotary instruments in pulpectomy of primary teeth
No statistically significant difference in dentin thickness was found between the three groups after instrumentation (P > 0.05)
Summary
Pediatric endodontics has witnessed various advances including use of rotary files in pulpectomy. Mohamed et al BMC Oral Health (2022) 22:13 method for biomechanical preparation in primary teeth, certain limitations were associated with hand files as being time-consuming and the occurrence of iatrogenic errors such as lateral perforations, zipping, apical blockage, and canal transportation [4]. To overcome these limitations, Ni–Ti rotary files were first introduced in pediatric endodontics by Barr et al in 2000 through use of Profile 0.04 taper rotary instruments in pulpectomy of primary teeth. Crespo et al concluded that usage of rotary files in deciduous teeth were more efficient in both root canal shaping and preparation time, facilitating higher quality of obturation of the root canal [6]
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