Separator (OA-0308)researched

Quick facts

Field	Value
ID	OA-0308
Type	component
Category	component
See also	Separator Separator

Overview

OA-0308 is an alternate catalog ID for the orthodontic separator (spacer). Full clinical and technical details: see Separator.

Used in

Appliances that incorporate this component. ★ = fabricated by Clear Fusion Lab.

• ★ Rapid palatal expander —

Rapid palatal expander

• ★ Quad Helix — Quad Helix
• ★ Nance holding arch — Nance

holding arch

• ★ Lingual arch — Lingual arch
• ★ Tongue crib — Tongue crib
• ★ Bluegrass appliance —

Bluegrass appliance

• ★ Palatal crib — Palatal crib
• ★ Transpalatal arch — Transpalatal

arch

• ★ Distal jet — Distal jet
• ★ Pendulum appliance — Pendulum

appliance

• ★ Lingual holding arch —

Lingual holding arch

• ★ Band and loop space maintainer — Band and

loop space maintainer

• ★ Bi-Helix expander — Bi-Helix

expander

• ★ ACCO appliance — ACCO appliance
• ★ Celtic appliance — Celtic

appliance

• ★ Pendex appliance — Pendex

appliance

• Herbst appliance — Herbst appliance
• Flip-Lock HERBST — Flip-Lock HERBST

Common variants & modifications

• Elastomeric ring separator: most common; placed 1 week before

banding appointment

• Brass wire separator: 0.025" wire threaded through contact; used

in very tight contacts

• Kesling spring separator: metal spring; self-retaining; for

contacts where elastomers won't stay

• No-separator (bondable tube): some clinicians skip banding

entirely and bond molar tubes directly

• Laser-fitted separator: separator sized from digital scan;

emerging technique for precise space creation

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Sources

• [Orthodontic Separators: Types and Placement —

JCO](https://www.jco-online.com)

• [Separator Placement Protocol — Proffit, Contemporary

Orthodontics 6th ed.](https://www.elsevier.com)

• Elastomeric vs Spring Separators — AJO-DO

Research log

• 2026-06-09 — cross-referenced to OA-0167.