Hook (OA-0309)researched

Quick facts

Field	Value
ID	OA-0309
Type	component
Category	component
See also	Hook Hook

Overview

OA-0309 is an alternate catalog ID for the orthodontic hook. Full clinical and technical details: see Hook.

Used in

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

• Class II elastics — Class II

elastics (attachment point)

• Class III elastics — Class III

elastics (attachment point)

• Interarch elastic — Interarch

elastic

Common variants & modifications

• Crimpable Kobayashi hook: clamps onto archwire between brackets;

universal placement

• Bracket-integrated hook: cast into premolar and canine brackets;

no separate attachment

• Extended arm hook: longer profile for difficult elastic angles

or high-pull needs

• Soldered archwire hook: soldered to archwire in lab for precise

positioning; non-adjustable

• Lingual button as hook (Palatal button): bonded to lingual surface;

delivers elastic from non-labial direction

\---

Sources

• [Orthodontic Hooks and Elastic Attachments —

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

• [Crimpable Hooks and Auxiliaries — 3M

Unitek](https://www.3m.com/orthodontics)

• [Hook Mechanics in Fixed Appliances — Proffit, Contemporary

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

Research log

• 2026-06-09 — cross-referenced to OA-0192.