I. Introduction

  • Dr. Amanda from StraightSmile Solutions clears up a common point of confusion: Protraction facemask/Tandem appliances and anterior sagittal appliances are not the same.
  • They may look similar on the surface, but they produce completely different results.

II. The Fundamental Difference

  • Protraction facemask and Tandem appliances create SKELETAL changes.
  • Anterior sagittal appliances create DENTAL changes only.
  • This distinction matters for diagnosis, treatment planning, and long-term outcomes.

III. Anterior Sagittal: What It Actually Does

  • This appliance moves teeth specifically, proclining incisors that were retroclined.
  • No skeletal change occurs. SNA, SNB, and maxillary position relative to cranial base remain unchanged.
  • Nothing this appliance does can’t be done with braces or aligners.
  • It’s useful for:
  • Minor arch development when combined with expansion screws
  • Starting the process of moving trapped teeth forward
  • Creating tongue space
  • But it will not grow a maxilla. Period.

IV. Protraction Facemask and Tandem: Real Skeletal Change

  • These appliances actually grow the maxilla forward—not the mandible.
  • Average skeletal advancement: 1.8mm of true maxillary translation.
  • That 1.8mm is permanent. The whole jaw moves, not just the teeth.
  • This increases nasopharyngeal and/or oropharyngeal dimensions by pulling the entire maxilla and soft palate forward.
  • Result: Improved airway, reduced clockwise mandibular rotation, better A and B points.

V. The Mechanics Matter

  • Sutures must be loosened first, usually with expansion, before protraction works
  • Tandem is similar but bulkier; Dr. Amanda prefers a facemask for better compliance.
  • Both require Phase 1 timing (under age 9-10) when class III presentation is typically small SNA or bimaxillary retrognathia.
  • After protraction, the mandible may catch up on its own or may need a twin block or MA.

VI. What Doesn’t Work for Airway

  • Elastics and headgear tip the occlusal plane.
  • They don’t grow jaws. They don’t help the airway.
  • If airway is your goal, mechanics that actually move jaws are non-negotiable.

VII. The Bottom Line

  • Anterior sagittal = tooth movement. Fine for minor proclination, but no skeletal effect.
  • Protraction facemask/Tandem = true maxillary advancement with airway and structural benefits.
  • Know which type of class III you’re treating before choosing your tool.
  • And remember: Anterior sagittal is just a placeholder for what braces or aligners could do anyway. Real class III correction requires real skeletal change.