Prof. Song Li

This presentation explores the application and advantages of passive self-ligating brackets (PSLBs) in managing complex orthodontic malocclusions, emphasizing their dual contribution to enhanced treatment efficacy and efficiency.

PSLBs utilize a built-in, non-constraining mechanism to passively secure the archwire within the bracket slot. Unlike traditional ligatures, this design fundamentally minimizes friction between the wire and bracket. This low-friction environment offers significant biomechanical advantages: it facilitates the delivery of lighter, more continuous, biologically optimal forces for tooth movement; provides superior control over applied forces and moments.

These inherent properties make PSLBs well-suited for complex orthodontic challenges. This presentation introduces PLB system cases involving severe crowding, significant arch length discrepancies, Class II/III malocclusions requiring complex anchorage management, deep bites, etc. Through case analysis, the speech elaborates on how to use PLBs to achieve ideal treatment effects in a relatively short period for different types of complex cases.