Pinheiro Sérgio Luiz, Pessoa Carolina, da Silva Josianne Neres, Gonçalves Rafael Orro, Duarte Danilo Antonio, da Silveira Bueno Carlos Eduardo
J Clin Pediatr Dent. 2016;40(2):124-8. doi: 10.17796/1053-4628-40.2.124.
To assess, in vitro, the ability of the ProTaper(™) and WaveOne(™) systems to reduce Enterococcus faecalis contamination in primary molars.
Sixty roots of primary molars were contaminated with E. faecalis. Roots were randomly allocated to one of four groups (n=20): ProTaper(™), WaveOne(™), control A, or control B. The files used were S1 and S2/F1 and F2 (ProTaper(™) system) and 25.08 (WaveOne(™) system). In control group A, the root canal was left uninstrumented, whereas in control group B, the root canal was irrigated with NaCl 0.9%. E. faecalis was sampled from the root canal system before and after instrumentation and the Wilcoxon test and Mann-Whitney U were used.
There were no differences in E. faecalis counts between pre-instrumentation counts in the ProTaper™ and WaveOne(™) (p>0.05). The ProTaper(™) system led to an 89.36% reduction in E. faecalis burden, versus 78.10% with the WaveOne(™) system (p>0.05). Instrumentation time was shorter with WaveOne(™) (p<0.0001).
The ProTaper(™) and WaveOne™ systems were equally effective in reducing Enterococcus faecalis in primary molars. The WaveOne(™) system was associated with shorter instrumentation time.
在体外评估ProTaper™和WaveOne™系统减少乳磨牙中粪肠球菌污染的能力。
60颗乳磨牙牙根被粪肠球菌污染。牙根被随机分配到四组之一（n = 20）：ProTaper™组、WaveOne™组、对照组A或对照组B。所使用的锉分别为S1和S2/F1和F2（ProTaper™系统）以及25.08（WaveOne™系统）。在对照组A中，根管未进行器械预备，而在对照组B中，根管用0.9%的氯化钠冲洗。在器械预备前后从根管系统中采集粪肠球菌样本，并使用Wilcoxon检验和Mann-Whitney U检验。
ProTaper™组和WaveOne™组器械预备前粪肠球菌计数无差异（p>0.05）。ProTaper™系统使粪肠球菌负荷降低了89.36%，而WaveOne™系统为78.10%（p>0.05）。WaveOne™系统的器械预备时间更短（p<0.0001）。
ProTaper™和WaveOne™系统在减少乳磨牙中粪肠球菌方面同样有效。WaveOne™系统的器械预备时间更短。
