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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

자료유형
학술저널
저자정보
Peraca Victor de Ornelas (Graduation Program in Dentistry Federal University of Pelotas Pelotas RS Brazil.) Xavier Samantha Rodrigues (Graduation Program in Dentistry Federal University of Pelotas Pelotas RS Brazil.) de Almeida Gomes Fabio (Department of Endodontics Universidade de Fortaleza CE Brazil.) dos Santos Luciane Geanini Pena (Graduation Program in Dentistry Federal University of Pelotas Pelotas RS Brazil.) Souza Erick Miranda (Department of Endodontics Federal University of Maranhao Sao Luiz MA Brazil.) Pappen Fernanda Geraldo (Graduation Program in Dentistry Federal University of Pelotas Pelotas RS Brazil.)
저널정보
대한치과보존학회 Restorative Dentistry and Endodontics Restorative Dentistry and Endodontics 제46권 제2호
발행연도
2021.1
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1 - 10 (10page)

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Objectives This study evaluated the effect of repeated uses and autoclaving in the instrumented area, fracture resistance, and time of instrumentation of thermally treated nickel-titanium reciprocating systems. Materials and Methods Two hundred simulated canals were instrumented using Reciproc Blue and WaveOne Gold. Each file was used up to 10 times or until fracture. The instrumented area was measured in pre- and post-operative images, using ImageJ software. Kaplan-Meier survival analysis evaluated the number of uses of instruments before fracture. Instrumented area and time of instrumentation were analyzed by Mann-Whitney U test and Kruskal-Wallis. Correlations among the number of uses and instrumented area were measured. The level of statistical significance was set at p < 0.05. Results Reciproc Blue presented a higher estimated number of uses in comparison with WaveOne Gold (p = 0.026), but autoclaving did not affect the resistance to fracture of instruments (p > 0.05). The instrumented area was different among the evaluated groups (p = 0.039), and the instrumented area along the uses of both tested instruments was reduced. With the time of instrumentation, there was also a significant difference among the evaluated groups; the groups without sterilization cycles were faster, in comparison to those submitted to autoclaving (p = 0.010). Conclusions Reciproc Blue was more resistant than WaveOne Gold, suffering later fracture. Additionally, the sterilization cycles did not influence the estimated number of uses of thermally treated reciprocating instruments, but the instrumented area of root canals was reduced along with the repeated uses of both instruments.
#Instrument fracture #Instrumentation #Sterilization #Reciproc Blue #WaveOne Gold

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참고문헌 (31)

참고문헌 신청
Hasheminia SM / 2018 / Cone-beam computed tomographic analysis of canal transportation and centering ability of single-file systems / J Endod 44:1788~1791 google schola Abu-Tahun IH / 2018 / Microscopic features of fractured fragment of nickel-titanium endodontic instruments by two different modes of torsional loading / Scanning 2018:9467059 google schola Es-Souni M / 2001 / On the transformation behaviour, mechanical properties and biocompatibility of two NiTi-based shape memory alloys: NiTi42 and NiTi42Cu7 / Biomaterials 22:2153~2161 google schola Zupanc J / 2018 / New thermomechanically treated NiTi alloys - a review / Int Endod J 51:1088~1103 google schola Kiefner P / 2014 / Is the reciprocating movement per se able to improve the cyclic fatigue resistance of instruments? / Int Endod J 47:430~436 google schola

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