J C Barasuol1, M P Alcalde2, E A Bortoluzzi3, M A H Duarte2, M Cardoso4, M Bolan4. 1. Pediatric Dentistry Division, Department of Dentistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil. jessica.barasuol@hotmail.com. 2. Department of Dentistry, Endodontics and Dental Materials, Bauru Dental School, University of São Paulo, Bauru, SP, Brazil. 3. Endodontics Division, Department of Dentistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil. 4. Pediatric Dentistry Division, Department of Dentistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil.
Abstract
PURPOSE: Compare canal transportation and dentin removal using micro computed tomography (micro-CT) and measure instrumentation time in the root canal preparation of primary molars using K-files, ProDesign Logic and Reciproc files. METHODS: A representative sample of 81 root canals of primary molars was randomised into three groups: K-files (#15-40), ProDesign Logic (#25) and Reciproc (R25). A single-trained operator prepared all root canals. A standardised micro-CT evaluation was performed before and after instrumentation using the CTan® program. Instrumentation time was also recorded. Statistical analysis involved one-way ANOVA, Tukey's post hoc test, Kruskal-Wallis test and Dunn's test, considering a 5% level of significance. RESULTS: Reciproc led to more canal transportation than K-files and ProDesign Logic (p < 0.001) in middle third, whereas K-files led to the most canal transportation in the apical third (p = 0.017). ProDesign Logic and Reciproc removed less dentin on the opposite side of the root curvature in the apical third compared to K-files (p = 0.008). Instrumentation time was better with ProDesign Logic and Reciproc than K-files (p < 0.001). CONCLUSION: ProDesign Logic demonstrated good results with regard to canal transportation and required less instrumentation time in primary molars. Reciproc and K-files led to the most canal transportation in the middle and apical third, respectively.
PURPOSE: Compare canal transportation and dentin removal using micro computed tomography (micro-CT) and measure instrumentation time in the root canal preparation of primary molars using K-files, ProDesign Logic and Reciproc files. METHODS: A representative sample of 81 root canals of primary molars was randomised into three groups: K-files (#15-40), ProDesign Logic (#25) and Reciproc (R25). A single-trained operator prepared all root canals. A standardised micro-CT evaluation was performed before and after instrumentation using the CTan® program. Instrumentation time was also recorded. Statistical analysis involved one-way ANOVA, Tukey's post hoc test, Kruskal-Wallis test and Dunn's test, considering a 5% level of significance. RESULTS: Reciproc led to more canal transportation than K-files and ProDesign Logic (p < 0.001) in middle third, whereas K-files led to the most canal transportation in the apical third (p = 0.017). ProDesign Logic and Reciproc removed less dentin on the opposite side of the root curvature in the apical third compared to K-files (p = 0.008). Instrumentation time was better with ProDesign Logic and Reciproc than K-files (p < 0.001). CONCLUSION: ProDesign Logic demonstrated good results with regard to canal transportation and required less instrumentation time in primary molars. Reciproc and K-files led to the most canal transportation in the middle and apical third, respectively.