Self-Ligating vs. Mesh Base Brackets: What's the Difference?

Bracket systems differ mainly in two things: how the archwire is held in place, and how the bracket is bonded to the tooth. Here's how the main construction types compare.

Self-Ligating Brackets

Self-ligating brackets use a built-in clip or sliding door mechanism to hold the archwire in the slot, rather than a separate elastic or wire ligature. They come in two variants:

• Active self-ligating systems use a spring clip that presses against the archwire, applying additional seating force.
• Passive self-ligating systems (commonly built around a sliding pin/door mechanism) hold the wire without added pressure, which manufacturers describe as offering lower friction during sliding mechanics.

Both types are commonly constructed from 17-4 stainless steel using MIM (metal injection molding) technology, and self-ligating systems are typically available in .022" slot sizes.

Mesh Base Brackets

Mesh base brackets use a separate metal mesh pad (often described as an "80-thick mesh pad") bonded to the back of the bracket to create the bonding surface. These are typically two-piece constructions — a bracket body welded or joined to the mesh base — and are commonly available across Roth, MBT, and Edgewise prescription systems.

Monoblock Brackets

Monoblock brackets take a different approach: the bracket body and base are manufactured as a single piece using MIM technology, which removes the bonding-pad-separating-from-bracket failure mode entirely since there's no second piece to separate. The base is typically sandblasted and micro-etched to create the bonding surface directly on that single piece.

Frequently Asked Questions

Are self-ligating brackets nickel-free?
Some self-ligating lines are specifically laser-welded to eliminate nickel allergy risk — check the specific product listing, since this varies by line even within 17-4 stainless steel construction.

What slot sizes are available?
Common orthodontic bracket slot sizes are .018" and .022"; self-ligating lines are frequently offered in .022" — confirm the slot size on the specific product before ordering to match your archwire system.

Is a monoblock bracket stronger than a two-piece mesh base bracket?
The main advantage of monoblock construction is eliminating base-separation failure, since there's no second piece to debond from the bracket body. Both styles are widely used in practice.

Browse our full orthodontic bracket selection for available systems and slot sizes.

This article is intended as general product information for orthodontic office purchasing staff and is not clinical or treatment guidance.