Baratto-Filho Flares, de Freitas Jéssica Vavassori, Gabardo Marilisa Carneiro Leão, Tomazinho Flávia Sens Fagundes, Mazzi-Chaves Jardel Francisco, de Sousa-Neto Manoel Damião
School of Health Sciences, Universidade Positivo, Rua Prof. Pedro Viriato Parigot de Souza 5300, Curitiba, Paraná, 81280-330, Brazil.
Department of Restorative Dentistry, Universidade de São Paulo, Avenida do Café s/n, Ribeirão Preto, São Paulo, 14040-904, Brazil.
BMC Res Notes. 2019 Jan 21;12(1):47. doi: 10.1186/s13104-019-4080-z.
This study monitored real-time torque variation of the WaveOne Gold (WOG) and Reciproc Blue (RB) during root canal preparation of mandibular molars. Thirty-six mandibular molars were prepared with WOG Primary 25.07 (WOGP, n = 36) and the RB R25 25.08 (RBR25, n = 36) for the mesial canals, whereas WOG Large 45.05 (WOGL, n = 18) and RB R40 40.06 (RBR40, n = 18) for the distal. Canal preparation was divided into thirds and the torque, maximum torque and time, were recorded.
The RBR25 instruments exhibited higher maximum torque in the apical third in contrast to the WOGP instruments (p < 0.05). The intragroup analysis found a significant difference in maximum torque between the cervical and apical thirds, and the middle and apical thirds (p < 0.05) for both instruments (RBR25 and WOGP). The WOGP group had the shortest preparation time (p < 0.05). There were no significant differences between the WOGL and RBR40 for any of the parameters evaluated (p > 0.05). The RBR25 had the highest torque when compared to the WOGP. Both instruments exhibited higher torque in the apical third and there were no significant differences between the instruments in the distal canal.
本研究监测了WaveOne Gold（WOG）和Reciproc Blue（RB）在下颌磨牙根管预备过程中的实时扭矩变化。使用WOG Primary 25.07（WOGP，n = 36）和RB R25 25.08（RBR25，n = 36）预备近中根管，而使用WOG Large 45.05（WOGL，n = 18）和RB R40 40.06（RBR40，n = 18）预备远中根管。根管预备分为三段，并记录扭矩、最大扭矩和时间。
与WOGP器械相比，RBR25器械在根尖段表现出更高的最大扭矩（p < 0.05）。组内分析发现，两种器械（RBR25和WOGP）在颈段和根尖段之间以及中段和根尖段之间的最大扭矩存在显著差异（p < 0.05）。WOGP组的预备时间最短（p < 0.05）。在评估的任何参数上，WOGL和RBR40之间均无显著差异（p > 0.05）。与WOGP相比，RBR25的扭矩最高。两种器械在根尖段均表现出更高的扭矩，且在远中根管中器械之间无显著差异。
