Table 1 Magnetic responsive nanotechnology designs

Magnetically responsive TNT delivery system (Aw2012 [13])

External permanent magnet

1. TNT was prepared through EA

2. Dopa-Fe₃O₄ magnetic nanoparticles are loaded at the bottom of TNT

3. Micellar coated Ind was loaded on the upper end of magnetic nanoparticles

Magnetically drives magnetic nanoparticles from the bottom

Preloading drugs in TNT

Achieve drugs-controlled release of magnetic response

MNPSNPs (Janßen2018 [14])

EM field/1.8 T/10 min

1. Fe₃O₄ is loaded with mesoporous silica

2. Fluorescein FIEC and RIBC are attached to the surface

3. Peg-silane modification

4. Nanoparticles are loaded onto Ti surface

Electromagnetic response property of Fe₃O₄

Tail vein injection

1. Good drug targeting

2. Good biocompatibility

Superparamagnetic PLGA coating (Ag–Fe₃O₄) (Yang2018 [17])

Permanent magnet is embedded in dental implants

Ag–Fe₃O₄ nanoparticles are loaded with PLGA coating on Ti surface

Magnetic adsorption magnetic particles; antibacterial activity of Ag ions

Nano-coating

1. The fixed PLGA

2. Good antibacterial activity

3. Promote the proliferation of bone cells

Superparamagnetic TiO₂ coating (Li2019 [139])

–

Fe₃O₄ modified TiO₂ coating

Effect of micromagnetic field on fibroblast

Nano-coating

1. Inhibit bacterial adhesion and reproduction

2. Improve soft tissue integration