Evaluation of the efficacy of mechanical nickel-titanium rotary and manual instruments in root canal treatment of deciduous teeth:A meta-analysis
WANG Dong
ZOU Bo
ZHOU Rongjing
Abstract：Objective To evaluate the efficacy of mechanical nickel-titanium(NiTi)rotary instruments compared with conventional manual treatments in root canal treatment of deciduous teeth.Methods A systematicsearch was conducted in MEDLINE,PubMed,EMBASE,Google Scholar,Cochrane Library up to August 2024.Randomized controlled trials comparing NiTi rotary and manual instruments in primary teeth were included.The primary outcome was root preparation time,while secondary outcomes include root filling time,obturation quality,and clinical or radiographic success rates.Statistical software RevMan 5.4 was used for data analysis.Results Compared with manual instruments,NiTi rotary systems significantly reduced both canal preparation time[SMD=2.72 min,95%CI:2.06-3.39,P<0.000 01]and filling time[SMD=0.72 min,95%CI:0.39-1.05,P<0.000 1].Rotary instrumentation also achieved a higher proportion of optimal obturations[OR=0.46(95%CI:0.29-0.71),P=0.000 6].No significant differences were observed in clinical or radiographic success rates between the two techniques.Conclusion Mechanical NiTi rotary instruments markedly shorten canal preparation and filling times and improve obturation quality compared with manual instrumentation,though long-term clinical and radiographic outcomes appear comparable.
Keywords：manual instrumentsmechanical nickel-titanium instrumentsdeciduous teethroot canal treatmentroot preparation
Publication Date：2025-11-28
Online Publishing Date：2025-12-29(First online date of this platform, not the publication date of the document)
Pages：8( 635-642 )