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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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          Abstract

          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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