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What are engagers(Attachments)?

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What Are Engagers

    Aligner attachments are tooth colour small blocks used to provide anchorage, movements.

Types of Engagers

Visual

Feature

Available On

Movement

Conventional
All Teeth
Retention
Rotational Dimples
Incisors & Canines
Couple force for rotation
Buccal Torque Ridge
Incisors
Lingual Root Torque
Buccal+ Lingual Torque Ridge
Upper Incisors
Lingual Root Torque+ Retraction
Optimized Root Uprighting
Canines & Premolars
Root Uprighting
Optimized Rotation
Canines & Premolars
Rotation
Optimized Anchorage
Maxillary Molars & Second Premolars
Anterior retraction
Horizontal Bevelled
Incisors
Extrusion
ODS Aligners Steps:
  • Etch
  • Primer
  • Composite buttons with Template
  • Clear flash with finishing burs
  • Deliver set 1 Aligner
ODS Aligners Armamentarium:
  • Etch
  • Primer
  • Applicator tips
  • Composite(flowable/packable)
  • Petrollium Jelly
  • Light cure
Important Notes:
  • Prep Patient , by checking the fit of the template.
  • Template must not rock and fit nicely.
  • Rinse and isolate template – keep aside.
  • Check with the Enagager chart and place etchant on the required tooth.
  • Apply Primmer.
  • Kindly use etchant even with Self-etch primer.
  • Apply a thin layer of Vasaline before loading composite on the template.
  • Load a little extra composite for better surface contact.
  • Place template hold bilaterally and cure.
  • Keep in mind to hold the template occlusally and buccally.
  • Remove template.
  • Remove flash( the excessive composite around attachment)
  • Deliver #1 Aligner.

Flash – excessive composites around attachments

Important Notes:
  • One of the most common cause of illfit Aligners due to no/unwanted movement.
  • Refix attachments if required using last aligner as template.

LEDGE FORMATION

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  • Mostly occur due to improper IPR, ledge formation leads to improper space closure and Illfit sometimes.
  • Confirm with IOPAR
  • For complete space closure parallel surfaces.
Common REASONS FOR ILL FITTING ALIGNERS
  • 1- Non- Compliant patient
  • 2- Flash around engagers not removed
  • 3- Missing Engagers
  • 4- IPR incorrectly performed & other iatrogenic errors
  • 5- Manufacturing errors