Dentisterie

Abstrait

Evaluation Of The Working Time And Remnants On Root Canal Walls After Instrumentation For Removal Of Three Different Root Canal Filling Systems

Kariem Mostafa Al Batouty*

Aim: Evaluation of remaining amount of filling material and working time needed when removing newly introduced glass fiber root canal filling material, Resilon and gutta percha.
Materials and Methods: Sixty roots were randomly divided into three groups (n = 20) according to the root canal filling system: Glass fiber group, roots were obturated using glass fiber cones (Stick Tech Ltd, Turku, Finland) and MetaSeal sealer (Parkell Inc, Farmington, NY); Resilon group, Resilon/Epiphany system (Pentron Clinical Technologies, Wallingford, CT); and gutta-percha group, gutta-percha cones and AH Plus (Dentsply, DeTrey, Germany). The obturated canals were retreated by using ProTaper Universal retreatment system (Dentsply Tulsa, Tulsa, OK). The time required to remove the obturation material was recorded using a stop watch. After splitting the roots, the amount of residual filling material on the canal walls was imaged, measured, and calculated as a percentage using the Image J 1.33u Program (National Institutes of Health, Bethesda, MD). Statistical analysis was accomplished using one way ANOVA test. Post hoc Tukey-Kramer multiple comparisons test was used for statistical analysis (P ≤ 0.05).
Results: Samples of all groups presented material remnants after retreatment was finished. The group filled with Resilon/Epiphany demonstrated significantly the least percentage of residual filling material (P < 0.05). Working Time needed for retreatment was the highest in glass fiber group and the least in Resilon/Epiphany group.
Conclusions: Resilon/Epiphany system is removed from the root canal more efficiently and faster than glass fiber /MetaSeal and gutta percha/AH plus.