Home / Orthodontics / Vertical control in SWA, Intrusion Mechanics (2)

Vertical control in SWA, Intrusion Mechanics (2)

  • Eruption / extrusion of post. teeth.
    • Stable process – accompanies vert. facial dev.
    • Contributing factor – bite opening – deep bite patients.
    • vertical facial ht. – growing patients –
    •  accommodates extrusion of post. teeth during ortho trt.
    • Not stable – adults – low mand. plane angles.
    •   Musculature – resists extrusion.
    • High angle cases – weak musculature – stable results.
    • àPermanent opening of mand. plane – undesired
  • Principles of ant. intrusion.
    • Use of optimal magnitude of forces & delivery with low LDR springs.
    • Use of point contacts in ant. region ( statically determinant system)
    • Position of force – selection of the point of application of force with respect to CR.
    • Selective intrusion based on ant. tooth geometry.
    • Control – reactive units – post. Anchorage unit.
    • Inhibition – erupn. of post. teeth.

About indiandentalacademy

Leave a Reply

Your email address will not be published. Required fields are marked *