Biomechanics

intermediate · 1 min

Moment-to-Force Ratio in Aligner Biomechanics

The M/F ratio decides whether a tooth tips, translates, or roots. The 3-value reference chart every treatment planner should have on the wall.

intermediate · 1 min

Overcorrection Strategy for Rotations

Rotations lose 15, 25% expression by end of treatment. The overcorrection percentages by tooth type that ship in a defensible ClinCheck.

advanced · 6 min

Accelerated Orthodontics: Propel, AcceleDent & Reality

Vibration devices and micro-osteoperforation claim to halve treatment time. The evidence is more nuanced than the marketing.

advanced · 6 min

SmartTrack, LD30 & Aligner Material Science

Modern aligner polymers are multi-layer thermoplastics engineered for sustained low force. Here is what separates SmartTrack from generic PETG.

intermediate · 4 min

Aligner Movement Predictability: What Tracks

Not all movements are equal, canine rotation tracks at ~35%, upper lateral extrusion at ~30%, and molar distalisation at ~87%.

intermediate · 4 min

Anchorage Strategy in Aligner Cases

Every millimetre of desired movement comes at the cost of unwanted reciprocal movement, anchorage planning decides which teeth stay put.

intermediate · 6 min

Bite Ramps & Power Ridges: The Auxiliaries Built Into the Tray

Bite ramps disclude posterior teeth for deep-bite correction; power ridges deliver torque without an attachment.

intermediate · 4 min

Class II & III Elastics with Aligners: Precision Cuts & Buttons

Aligners use precision cuts or bonded buttons as elastic hooks, how orthodontists borrow elastics from fixed appliances.

intermediate · 4 min

Invisalign with Mandibular Advancement: Class II Correction in Growing Patients

Mandibular Advancement features are precision wings that hold the lower jaw forward while aligning, a functional appliance built into the tray.

intermediate · 4 min

Moment-to-Force Ratios: How Aligners Control Root Position

M/F ratios determine whether a tooth tips, translates or roots, the invisible geometry behind every attachment choice.

advanced · 6 min

Photobiomodulation & Orthodontic Movement

Low-level laser and LED therapy claim to modulate bone turnover. Here is what the evidence supports and what it does not.

intermediate · 6 min

Root Torque With Aligners: Predictability & Limitations

Root torque is the movement aligners predict least reliably, 40, 50% expression on average without power ridges.