레시프로케이팅 싱글파일 비교: 에지파일엑스원 Vs 웨이브원골드, 레시프록

Braz Oral Res. 2019;33:e028. doi: 10.1590/1807-3107bor-2019.vol33.0028. Epub 2019 Apr 11.

Cyclic fatigue resistance of novel Genius and Edgefile nickel-titanium reciprocating instruments.

This study aimed to assess the cyclic fatigue resistance of Genius and EdgeFile X1 reciprocating instruments compared with WaveOne Gold Primary. Twenty Genius (Ultradent) 25.04, 20 Genius 30.04, 20 EdgeFile X1 (EdgeEndo) and 20 WaveOne Gold Primary (Dentsply Maillefer) instruments were included in this study and tested in a static cyclic fatigue testing device, which has an artificial stainless steel canal with a 60° angle of curvature and a 5-mm radius of curvature. All instruments were operated in reciprocation mode until fracture occurred. The number of cycles to failure (NCF) was calculated and time to fracture (TF) was recorded in seconds using a digital chronometer. The mean and standard deviations of NCF and TF were calculated for each reciprocating system and the data were subjected to Kruskal-Wallis one-way analysis of variance and to Dunn's test (p < .05) using SigmaPlot software (Systat software, CA, USA). The fractured surfaces of five instruments from each brand were randomly examined and microphotographed by a low-vacuum environmental scanning electron microscopy - SEM (Tabletop Microscope TM3030, Hitachi, Japan) to confirm the cyclic fatigue fracture. EdgeFile exhibited the highest cyclic fatigue resistance, followed by both Genius files (p < .05). Within the limitations of this in vitro study, EdgeFile X1 instruments had significantly higher cyclic fatigue resistance than did Genius and WaveOne Gold Primary instruments. The cyclic fatigue resistance of both Genius files was higher than that of WaveOne Gold Primary.

에지파일 엑스원 파일의 회전피로파절 저항성이 지니어스나 웨이브원 골드 보다 더 우수하다.

Aust Endod J. 2019 Dec;45(3):400-406. doi: 10.1111/aej.12374. Epub 2019 Sep 27.

Resistance to cyclic fatigue of reciprocating instruments determined at body temperature and phase transformation analysis.

The purpose of this study was to compare cyclic fatigue (CF) resistance of reciprocating instruments at body temperature and relate the findings to their martensitic transformation temperatures. Contemporary nickel-titanium (NiTi) reciprocating instruments WaveOne Primary, WaveOne Gold Primary and EdgeFile X1 (n = 20 each and #25 tip diameter) were tested for CF resistance at body temperature (37 ± 1°C). Instruments were actioned according to manufacturer guidelines until fracture occurred in a simulated canal (angle of curvature = 60°, radius of curvature = 3 mm and centre of curvature = 5 mm from the tip). Time to fracture was recorded, and data analysed using Weibull analysis. Two instruments of each were tested using differential scanning calorimetry (DSC) to assess phase transformation temperatures. Reciprocating instruments manufactured with new alloys seem to be safer to CF than those manufactured with traditional M-Wire at body temperature. Martensitic transformation temperatures seem not to relate with fatigue behaviour for reciprocating motions.

© 2019 Australian Society of Endodontology Inc.

 

새로운 열처리 방식의 에지엔도 에지파일 엑스원 로타리 파일이 전통적인 M-wire 방식보다 체온에서 더 안전하다.

J Endod. 2018 Dec;44(12):1788-1791. doi: 10.1016/j.joen.2018.09.011. Epub 2018 Nov 1.

Cone-beam Computed Tomographic Analysis of Canal Transportation and Centering Ability of Single-file Systems.

Hasheminia SM¹, Farhad A², Sheikhi M³, Soltani P⁴, Hendi SS⁵, Ahmadi M⁶.

RESULTS:

The mean canal transportation was significantly lower with EdgeFile (P < .001) followed by the WaveOne rotary system. Moreover, the centering ability of the EdgeFile system was higher than that of the WaveOne and Reciproc systems.

CONCLUSIONS:

The EdgeFile rotary system showed the lowest transportation in both the mesiodistal and buccolingual directions and the highest centering ability. The Reciproc system showed the highest transportation and the lowest centering ability.

에지파일이 다른 파일보다 근관에서 중심을 잘 잡기때문에 트랜스포테이션 발생 확률이 가장 작다.

J Endod. 2019 Feb;45(2):199-204. doi: 10.1016/j.joen.2018.10.017.

Mechanical Properties of Various Glide Path Preparation Nickel-titanium Rotary Instruments.

RESULTS:

EdgeGlidePath showed superior cyclic fatigue resistance compared with the other systems. One G showed higher maximum torsional strength than the others. one G showed the largest distortion angle and the highest toughness followed by EdgeGlidePath and ProGlider (P < .05). one G also showed larger bending stiffness than the others, whereas EdgeGlidePath showed a larger residual angle than the others (P < .05).

CONCLUSIONS:

Conventional wire showed higher toughness and torsional resistance than M-Wire and heat-treated nickel-titanium instruments. However, heat-treated wire showed higher cyclic resistance than conventional wire and M-Wire.

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