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논문 기본 정보

자료유형
학술저널
저자정보
Costa Patricia Marton (Department of Dentistry Santa Fé do Sul Municipal Foundation of Education and Culture – UNIFUNEC Santa Fé do Sul SP Brazil.) Leal Renata Maíra de Souza (Department of Restorative Dentistry Federal University of Paraná Curitiba PR Brazil.) Yamanari Guilherme Hiroshi (Department of Dentistry Santa Fé do Sul Municipal Foundation of Education and Culture – UNIFUNEC Santa Fé do Sul SP Brazil.) Cavenago Bruno Cavalini (Department of Restorative Dentistry Federal University of Paraná Curitiba PR Brazil.) Duarte Marco Antônio Húngaro (Department of Operative Dentistry Endodontics and Dental Materials Bauru School of Dentistry University of São Paulo Bauru SP Brazil.)
저널정보
대한치과보존학회 Restorative Dentistry and Endodontics Restorative Dentistry and Endodontics 제48권 제2호
발행연도
2023.5
수록면
1 - 7 (7page)
DOI
10.5395/rde.2023.48.e15

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초록· 키워드

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Objectives This study evaluated the efficiency of WaveOne Primary files (Dentsply Sirona) for removing root canal fillings with 2 types of movement: reciprocating (RCP) and continuous counterclockwise rotation (CCR). Materials and Methods Twenty mandibular incisors were prepared with a RCP instrument (25.08) and filled using the Tagger hybrid obturation technique. The teeth were retreated with a WaveOne Primary file and randomly allocated to 2 experimental retreatment groups (n = 10) according to movement type: RCP and CCR. The root canals were emptied of filling material in the first 3 steps of insertion, until reaching the working length. The timing of retreatment and procedure errors were recorded for all samples. The specimens were scanned before and after the retreatment procedure with micro-computed tomography to calculate the percentage and volume (mm3) of the residual filling material. The results were statistically evaluated using paired and independent t-tests, with a significance level set at 5%. Results No significant difference was found in the timing of filling removal between the groups, with a mean of 322 seconds (RCP) and 327 seconds (CCR) (p < 0.05). There were 6 instrument fractures: 1 in a RCP motion file and 5 in continuous rotation files. The volumes of residual filling material were similar (9.94% for RCP and 15.94% for CCR; p > 0.05). Conclusions The WaveOne Primary files used in retreatment performed similarly in both RCP and CCR movements. Neither movement type completely removed the obturation material, but the RCP movement provided greater safety.

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