Table 3 Overview of special-structure methods of root canal files
Code | Special-structure | Method | Performance | Characteristics |
|---|---|---|---|---|
US20110081623 [77] | STF | Mesh structure | The realization of different shapes and sizes | IS, HA |
CN208114663 [78] | STS | M- and inverted M-wave | Adaptation of root canals | Uniform cutting |
CN110497163 [79] CN110693615 [80] | STS | Brushed metal | Composite embryo process | GCR |
WO2018002951 [81] | STS | Flexible filament arrangement | Basket shape | IS |
US20140045142 [82] | STS | SWW | Brush sweep | GCR |
US20110212413 [83] | STS | SWW and sandblasted | Sliding between files body and handle | IS |
US9585731 [84] | STS | SWW with metal particles | With polishing function | GCR, HCE |
CN209107620 [85] | STH | Counter | Simple counting | Easy to observe the number of uses |
CN108542512 [86] CN108433831 [87] | STH | Counter | Visual counting | Direct observation of the number of uses |
CN202437374 [88] CN209004247 [89] | STF | Setting recess | Ring grooves | IS, RSC |
CN113081324 [90] | STF | SRS | Ring grooves | IS, RSC |
EP3597141 [91] | STF | SRS | Spiral springs | IS, RSC |
US20160128800 [92] | STF | SRS | Horizontal penetration port | IS, RSC |