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      Comparison between rotary and manual techniques on duration of instrumentation and obturation times in primary teeth.

      The Journal of clinical pediatric dentistry
      Chi-Square Distribution, Child, Child, Preschool, Dental Equipment, Dental Pulp Necrosis, therapy, Double-Blind Method, Female, Humans, Male, Pulpectomy, instrumentation, standards, Root Canal Obturation, methods, Root Canal Preparation, Statistics, Nonparametric, Time Factors, Tooth, Deciduous

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          The aim of this study was to compare the duration of instrumentation and obturation times and quality of root canal filling between rotary and manual instrumentation techniques in primary teeth. A randomized, controlled clinical trial was performed that included deciduous teeth with pulp necrotic. Forty necrotic teeth were included; 20 were instrumented with a rotary technique (experimental group) and 20 with a manual technique (control group). The time taken for instrumentation and for obturation were recorded in minutes, and the quality of the root canal filling was recorded as optimal, under-filled, or overfilled. The use of the rotary technique diminished the time of instrumentation to 63% and time of obturation to 68%, and it improved the quality of the root canalfilling. The use of rotary instruments in the pulpectomy of primary molars represents a promising technique; the time is significantly reduced.

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