Influence of operator's experience level on lifespan of the WaveOne Primary file in extracted teeth
Saleh Abdulrahman Mohammed, Tavanafar Saeid, Vakili Gilani Pouyan, Sammerraie Noor Jamal Al, Rashid Faahim,
소속 상세정보
( Saleh Abdulrahman Mohammed ) - Ajman University of Science and Technology Department of Restorative Dentistry
( Tavanafar Saeid ) - Ajman University of Science and Technology Department of Restorative Dentistry
( Vakili Gilani Pouyan ) - Ajman University of Science and Technology Department of Restorative Dentistry
( Sammerraie Noor Jamal Al ) - Ajman University of Science and Technology Department of Restorative Dentistry
( Rashid Faahim ) - Ajman University of Science and Technology Department of Restorative Dentistry
KMID : 1034420130380040222
Abstract
Objectives: The aim of this study was to assess the influence of operator experience level on the lifespan of the WaveOne Primary file (Dentsply Maillefer, Ballaigues, Switzerland) in extracted teeth.
Materials and Methods: Moderately curved canals of extracted maxillary and mandibular molars were randomly distributed into 2 groups: experienced and inexperienced operators. Ten files were allocated to each group (n = 10). Each canal was prepared until the working length was reached, and the same file was used to prepare additional canals until it separated. The number of canals prepared before file separation was recorded. The fragment length of each file was measured, and the location of the fragment in the canal was determined. Data were statistically analysed using the independent 2-sample t-test.
Results: The 2 operators prepared a total of 324 moderately curved canals of maxillary and mandibular molars. There was no significant intergroup difference in the mean number of canals prepared (p = 0.27). The average lifespan of the WaveOne Primary file was 17.1 and 15.3 canals, and the longest lifespan was 25 and 20 canals, when used by experienced and inexperienced operators, respectively. There were no statistically significant intergroup differences in separated fragment length and location.
Conclusions: Within the limitations of this study, operator experience level appears to have no effect on the lifespan of the WaveOne Primary file in preparation of moderately curved canals. Single teeth with multiple canals can be prepared safely even by a novice operator by using a single file.
키워드
Lifespan; Operator experience; Reciprocating; Separation; WaveOne
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